Journal articles on the topic 'Mapping NE Arnhem Land'

The paper examines the application of the ecological thresholds concept to fire management issues concerning fire-sensitive vegetation types associated with the remote, biodiversity-rich, sandstone Arnhem Plateau, in western Arnhem Land, monsoonal northern Australia. In the absence of detailed assessments of fire regime impacts on component biota such as exist for adjoining Nitmiluk and World Heritage Kakadu National Parks, the paper builds on validated 16-year fire history and vegetation structural mapping products derived principally from Landsat-scale imagery, to apply critical ecological thresholds criteria as defined by fire regime parameters for assessing the status of fire-sensitive habitat and species elements. Assembled data indicate that the 24 000 km2 study region today experiences fire regimes characterised generally by high annual frequencies (mean = 36.6%) of large (>10 km2) fires that occur mostly in the late dry season under severe fire-weather conditions. Collectively, such conditions substantially exceed defined ecological thresholds for significant proportions of fire-sensitive indicator rain forest and heath vegetation types, and the long-lived obligate seeder conifer tree species, Callitris intratropica. Thresholds criteria are recognised as an effective tool for informing ecological fire management in a variety of geographic settings.

Fire regimes in many north Australian savanna regions are today characterised by frequent wildfires occurring in the latter part of the 7-month dry season. A fire management program instigated from 2005 over 24 000 km2 of biodiversity-rich Western Arnhem Land aims to reduce the area and severity of late dry-season fires, and associated greenhouse gas emissions, through targeted early dry-season prescribed burning. This study used fire history mapping derived mostly from Landsat imagery over the period 1990–2009 and statistical modelling to quantify the mitigation of late dry-season wildfire through prescribed burning. From 2005, there has been a reduction in mean annual total proportion burnt (from 38 to 30%), and particularly of late dry-season fires (from 29 to 12.5%). The slope of the relationship between the proportion of early-season prescribed fire and subsequent late dry-season wildfire was ~–1. This means that imposing prescribed early dry-season burning can substantially reduce late dry-season fire area, by direct one-to-one replacement. There is some evidence that the spatially strategic program has achieved even better mitigation than this. The observed reduction in late dry-season fire without concomitant increase in overall area burnt has important ecological and greenhouse gas emissions implications. This efficient mitigation of wildfire contrasts markedly with observations reported from temperate fire-prone forested systems.

The groundwater is an intrinsic and vital capital for providing water supplies in rural and urban areas. Climate change poses a strong threat to the world; especially in Iraq is considering one of the arid and semi-arid regions. The climatic changes lead to an increase in the demand for groundwater, especially with low rainfall and an increase in the population. It is very important to model groundwater potential for the sub-basin. This paper aims to produce a map defining the potential groundwater zones of the Shwan sub-basin. By Geographic Information System and remote sensing data, the required data or six factors (geology, elevations, slope, drainage density, soil, and land uses/land covers) are available to be collected through weighted overlay for creating groundwater potential map. The result was five zones for groundwater potential from very low towards the eastern parts and also end of the western boundary to very high towards the western parts of the sub-basin. The geological formations of the sub-basin such as conglomerate, low elevations, low slope and low drainage density consider as high groundwater potential zones.

Assessment of the spatio-temporal dynamics of shifting cultivation is important to understand the opportunities for land restoration. The past studies on shifting cultivation mapping of North-East (NE) India lack systematic assessment techniques. We have developed a decision tree-based multi-step threshold (DTMT) method for consistent and long-term mapping of shifting cultivation using Landsat data from 1975 to 2018. Widely used vegetation indices such as normalized difference vegetation index (NDVI), Normalized Burn Ratio (NBR) and its relative difference NBR (RdNBR) were integrated with the suitable thresholds in the classification, which yielded overall accuracy above 85%. A significant decrease in total shifting cultivation area was observed with an overall reduction of 75% from 1975–1976 to 2017–2018. The methodology presented in this study is reproducible with minimal inputs and can be useful to map similar changes by optimizing the index threshold values to accommodate relative differences for other landscapes. Furthermore, the crop-suitability maps generated by incorporating climate and soil factors prioritizes suitable land use of shifting cultivation plots. The Google Earth Engine (GEE) platform was employed for automatic mapping of the shifting cultivation areas at desired time intervals for facilitating seamless dissemination of the map products. Besides the novel DTMT method, the shifting cultivation and crop-suitability maps generated in this study, can aid in sustainable land management.

Although biomass burning of savannas is recognised as a major global source of greenhouse gas emissions, quantification remains problematic with resulting regional emissions estimates often differing markedly. Here we undertake a critical assessment of Australia’s National Greenhouse Gas Inventory (NGGI) savanna burning emissions methodology. We describe the methodology developed for, and results and associated uncertainties derived from, a landscape-scale emissions abatement project in fire-prone western Arnhem Land, northern Australia. The methodology incorporates (i) detailed fire history and vegetation structure and fuels type mapping derived from satellite imagery; (ii) field-based assessments of fuel load accumulation, burning efficiencies (patchiness, combustion efficiency, ash retention) and N : C composition; and (iii) application of standard, regionally derived emission factors. Importantly, this refined methodology differs from the NGGI by incorporation of fire seasonality and severity components, and substantial improvements in baseline data. We consider how the application of a fire management program aimed at shifting the seasonality of burning (from one currently dominated by extensive late dry season wildfires to one where strategic fire management is undertaken earlier in the year) can provide significant project-based emissions abatement. The approach has wider application to fire-prone savanna systems dominated by anthropogenic sources of ignition.

Detailed mapping based on the high-resolution grids, such as GEBCO, ETOPO1, GlobSed, EGM-2008 is crucial for various domains of Earth sciences: geophysics, glaciology, Quaternary, sedimentology, geology, environmental science, geomorphology, etc. The study presented a GMT-based scripting techniques of the cartographic data processing aimed at the comparative analysis of the bathymetry, sediment thickness, geologic objects and geophysical settings in the study area based on various datasets. The study area is located in the Ross Sea, Antarctic. The highest values of the sediment thickness over 7,500 m are dominating in the southwest segment of the Ross Sea closer to the Victoria Land, followed by the region over the Ross Ice Shelf with values between 5,500 to 7,000 m (170°-175°W). The increased sediment thickness (2,500 to 3,000 m) was also mapped seen in the region NE off the Sulzberger Bay (70-75°S to 140-155°W), caused by the closeness of the Marie Bird Land ice coasts. A remarkable correlation between the gravity and the topography of the sea-land border in the Marie Bird Land area is well reflected in the coastal line and a set of the higher values in the free-air gravity. On the contrary, negative values (–60 to -80 mGal) are notable along the submarine toughs stretching parallel in the western part of the basin: e.g. the trough stretching in NW-SE direction in the 170°W-175°E, 65°S-68°S, between the 167°W-175°W, 70°S-72°S. Such correlations are clearly visible on the map, indicating geological lineaments and bathymetric depressions correlating with gravity grids. The paper contributes to the regional studies of the Ross Sea, the Antarctic and Polar region, and development of the cartographic technical methodologies by presenting an application of the GMT for thematic mapping.

Mapping the spatial distribution of soil fertility in a particular area gives an idea about the nutrient content in the soil which plays an im-portant role in fertilizer recommendation, sustainable soil manage-ment, integrated plant nutrient management, landuse planning, and site-specific nutrient management (SSNM). A study was carried out to assess the soil fertility status of the Rapti Municipality, Chitwan, Ne-pal. A total of 120 soil samples was collected based on land use, slope, and aspects with the useof Google Earth Pro (GEP) and ArcGIS. Based on the soil test report spatial variation of soil texture, soil pH, total nitrogen, available phosphorous, and potassium of the study area was prepared. The majority of the study area (57.11%) has sandy clay soils. The soil pH was very strongly acidic to slightly alkaline with pH values ranging from 4.8 to 8.0. Soil organic matter (1.94-3.75%), total nitrogen (0.097-0.187%), available phosphorous(51.03-270.10 kgha-1), and available potassium (169.87-358.68 kgha-1) in the soil are within the range of medium to high in the study area. To maintain this nutrient status, the use of organic manure, reduced use of chemical fertilizers, and different soil management practices should be adopted in this area.

Abstract Remote sensing datasets have introduced remarkable advancements in mapping rock units, structural elements, and hydrothermal alteration zones. This study applied Landsat Operational Land Imager (OLI) multispectral dataset in discriminating the intricate basement of Um Salim area, Central Eastern Desert (CED), Egypt. Moreover, a panchromatic 15m pixel size band is implemented to extract the study area’s linear structural features. Several image processing methods including False Color Combination (FCC), Band Ratio (BR), Optimum Index Factor (OIF), and Density slicing were utilized in lithological and alteration mapping. The widely used, LINE module of the PCI Geomatica is applied for lineament extraction. Results reasonably discriminate the complicated rock units using selected composites depending on OIF results. A photo-geological map is constructed and shows greater coincidence with recently published maps. Lineaments map and its density revealed the preponderance of NE-SW and WNW-ESE structural trends. The spatial relationship between the resultant hydrothermally-altered zones and the detected structural features strongly recommends further detailed examination for ore deposits within the study area besides manifesting the efficiency of the utilized data and methods.

In this study, the recently launched Phased Array type L-band Synthetic Aperture Radar-2 (PALSAR-2) onboard the Advanced Land Observing Satellite-2 (ALOS-2), remote sensing data were used to map geologic structural and topographical features in the Kelantan river basin for identification of high potential risk and susceptible zones for landslides and flooding areas. A ScanSAR and two fine mode dual polarization level 3.1 images cover Kelantan state were processed for comprehensive analysis of major geological structures and detailed characterizations of lineaments, drainage patterns and lithology at both regional and district scales. Red-Green-Blue (RGB) colour-composite was applied to different polarization channels of PALSAR-2 data to extract variety of geological information. Directional convolution filters were applied to the data for identifying linear features in particular directions and edge enhancement in the spatial domain. Results derived from ScanSAR image indicate that lineament occurrence at regional scale was mainly linked to the N-S trending of the Bentong-Raub Suture Zone (BRSZ) in the west and Lebir Fault Zone in the east of the Kelantan state. Combination of different polarization channels produced image maps contain important information related to water bodies, wetlands and lithological units for the Kelantan state using fine mode observation data. The N-S, NE-SW and NNE-SSW lineament trends were identified in the study area using directional filtering. Dendritic, sub-dendritic and rectangular drainage patterns were detected in the Kelantan river basin. The analysis of field investigations data indicate that many of flooded areas were associated with high potential risk zones for hydro-geological hazards such as wetlands, urban areas, floodplain scroll, meander bend, dendritic and sub-dendritic drainage patterns, which are located in flat topograghy regions. Numerous landslide points were located in rectangular drainage system that associated with topographic slope of metamorphic and Quaternary rock units. Some large landslides were associated with N-S, NNE-SSW and NE-SW trending fault zones. Consequently, structural and topographical geology maps were produced for Kelantan river basin using PALSAR-2 data, which could be broadly applicable for landslide hazard mapping and identification of high potential risk zone for hydro-geological hazards.

The present study analyzes factors that condition the occurrence of erosive incisions in the municipality of São Francisco de Assis, located in the western region of Rio Grande do Sul, in the Ibicuí river basin. Multicriteria analysis with GIS support was used for the development of map algebra operations. The base maps for the definition of the map of erosive fragility were slope, soils, lithology and land use, with weights assigned to each of the variables present in the base maps. The mapping of erosive fragility was carried out by the map algebra operation carried out in the GIS, using the Raster Calculator tool. The areas with the lowest erosive fragility, occur in the NW portion of the municipality, and are related to the occurrence of natural tree vegetation. In the municipality, areas with medium erosive fragility occur at the extreme NE-E and NW, formed by soils on volcanic rocks or sandstone with volcanic contribution where the predominant uses agricultural. The occurrence of very high erosive fragility is associated with the substrate of sandstones, friable soils and low soil cover. The work showed the importance of the multi-criteria relationship involving physical attributes of the landscape and the study of land use is essential in studies of fragility and environmental potential.

AbstractThe purpose of the present study was to compare the prediction performances of three statistical methods, namely, information value (IV), weight of evidence (WoE) and frequency ratio (FR), for landslide susceptibility mapping (LSM) at the east of Constantine region. A detailed landslide inventory of the study area with a total of 81 landslide locations was compiled from aerial photographs, satellite images and field surveys. This landslide inventory was randomly split into a testing dataset (70%) for training the models, and the remaining (30%) was used for validation purpose. Nine landslide-related factors such as slope gradient, slope aspect, elevation, distance to streams, lithology, distance to lineaments, precipitation, Normalized Difference Vegetation Index (NDVI) and stream density were used in the landslide susceptibility analyses. The inventory was adopted to analyse the spatial relationship between these landslide factors and landslide occurrences. Based on IV, WoE and FR approaches, three landslide susceptibility zonation maps were categorized, namely, “very high, high, moderate, low, and very low”. The results were compared and validated by computing area under Road the receiver operating characteristic (ROC) curve (AUC). From the statistics, it is noted that prediction scores of the FR, IV and WoE models are relatively similar with 73.32%, 73.95% and 79.07%, respectively. However, the map, obtained using the WoE technique, was experienced to be more suitable for the study area. Based on the results, the produced LSM can serve as a reference for planning and decision-making regarding the general use of the land.

Landslides are one of the most frequent and disastrous natural hazards worldwide. Thus, the need of landslide susceptibility maps is of primary importance as they are both a useful tool for the land use planning and a necessary step for future development activities. This paper presents an integrated technique of analytical hierarchical process (AHP) and geographic information system (GIS) to create a landslide susceptibility map of the NE part of Achaia prefecture. The study area mainly consists of Neogene deposits and it is a part of the Corinthian graben, which characterized by intense neotectonic activity. Therefore, it is affected by many slope movements that usually cause serious damages in inhabitant areas and road networks. Based on field survey data analysis six parameters were chosen as major parameters that influence the stability of slopes to the direction of landslide manifestation. The AHP method identifies both the rate of the individual classes, and the weight of each factor. Spatial layers with their corresponding rates and weights were linearly combined to prepare the landslide susceptibility map, which includes four zones of slope movement’s susceptibility, namely a low, a moderate a high and a very high zone. The evaluation and final confirmation of the map was based on a great number of recorded landslides in the area.

Yearly, several landslides ensued during heavy monsoons rainfall in Kelantan river basin, peninsular Malaysia, which are obviously connected to geological structures and topographical features of the region. In this study, the recently launched Phased Array type L-band Synthetic Aperture Radar-2 (PALSAR-2) onboard the Advanced Land Observing Satellite-2 (ALOS-2), remote sensing data were used to map geological structural and topographical features in the Kelantan river basin for identification of high potential risk and susceptible zones for landslides. Adaptive Local Sigma filter was selected and applied to accomplish speckle reduction and preserving both edges and features in PALSAR-2 fine mode observation images. Different polarization images were integrated to enhance geological structures. Additionally, directional filters were applied to the PALSAR-2 Local Sigma resultant image for edge enhancement and detailed identification of linear features. Several faults, drainage patterns and lithological contact layers were identified at regional scale. In order to assess the results, fieldwork and GPS survey were conducted in the landslide affected zones in the Kelantan river basin. Results demonstrate the most of the landslides were associated with N-S, NNW-SSE and NE-SW trending faults, angulated drainage pattern and metamorphic and Quaternary units. Consequently, structural and topographical geology maps were produced for Kelantan river basin using PALSAR-2 data, which could be broadly applicable for landslide hazard mapping.

Yearly, several landslides ensued during heavy monsoons rainfall in Kelantan river basin, peninsular Malaysia, which are obviously connected to geological structures and topographical features of the region. In this study, the recently launched Phased Array type L-band Synthetic Aperture Radar-2 (PALSAR-2) onboard the Advanced Land Observing Satellite-2 (ALOS-2), remote sensing data were used to map geological structural and topographical features in the Kelantan river basin for identification of high potential risk and susceptible zones for landslides. Adaptive Local Sigma filter was selected and applied to accomplish speckle reduction and preserving both edges and features in PALSAR-2 fine mode observation images. Different polarization images were integrated to enhance geological structures. Additionally, directional filters were applied to the PALSAR-2 Local Sigma resultant image for edge enhancement and detailed identification of linear features. Several faults, drainage patterns and lithological contact layers were identified at regional scale. In order to assess the results, fieldwork and GPS survey were conducted in the landslide affected zones in the Kelantan river basin. Results demonstrate the most of the landslides were associated with N-S, NNW-SSE and NE-SW trending faults, angulated drainage pattern and metamorphic and Quaternary units. Consequently, structural and topographical geology maps were produced for Kelantan river basin using PALSAR-2 data, which could be broadly applicable for landslide hazard mapping.

Abstract. Short extreme events have significant impact on landscape and ecosystems in low-lying and exposed areas such as deltaic systems. In this context, this paper proposes a combined methodology for the mapping and monitoring of the flooding and water quality dynamics of coastal areas under extreme storms from Sentinel 2 imagery. The proposed methodology has been applied in a coastal bay of the Ebro Delta (Catalonia, NE Spain) to evaluate jointly the impact of Gloria storm (January 2020) in land-flooding and water quality. The experimental results show that the Gloria storm had a strong morphological impact and altered the water quality (chl-a) dynamics. The results show a recovery in terms of water quality after some weeks but in contrast the coastal morphology did not show the same degree of resilience. This paper is the first step of an overall goal that is to set the bases in a long term, for a workflow for rapid response and continuous monitoring of storm effects in coastal areas and/or highly valuable ecosystems such as the Ebro Delta.

AbstractIn this study, two angular unconformities are found and analysed for the first time in the Mesozoic–Cenozoic succession in the northwestern segment of the Zagros fold–thrust belt (ZFTB) in the Kurdistan Region. The first unconformity exists between Lower Cretaceous and Paleocene–Eocene rocks and the second between the Campanian Shiranish Formation and the Maastrichtian Tanjero Formation. Each of these unconformities is found in two different localities in the Zagros Imbricate Zone (i.e. the highly deformed zone immediately SW of the Zagros Suture) of the ZFTB of the Kurdistan Region near the border with Iran. The study uses recent geological mapping, structural and stratigraphic analyses in addition to using previous biozonation of the stratigraphic units that bound the two unconformities. The first unconformity was initiated with obduction of the ophiolite and Lower Cretaceous radiolarite onto the passive margin of the Arabian plate. This unconformity formed during an early phase of the Zagros orogeny, which is associated with the developing of a foreland basin, and resulted in the folding of the radiolarites and their uplift to form high-relief land. The erosion of this high-relief land resulted in the formation of the Paleocene–Eocene Red Bed Series and their deposition on the folded radiolarite. The timing of the deformation that caused this unconformity is hard to determine; however, its stratigraphic position may suggest that it possibly is related to post-Cenomanian movements. The second unconformity is between the tilted Campanian Shiranish Formation (hemipelagite) and Tanjero Formation (500 m of conglomerate in the more proximal area). These unconformities indicate that deformation and uplift of the sedimentary units was variable during ophiolite obduction in this part of the ZFTB. We argue that deformation, ophiolite obduction and collision are likely to have varied in space and time along the c. 2000 km long ZFTB.

Soil erosion induced by heavy rainfall deeply affects landscape changes and human activities. It depends on rainfall distribution (e.g., intensity, duration, cumulative per event) and is controlled by the interactions between lithology, orography, hydrography, land use, and vegetation. The Abruzzo piedmont coastal hilly area has been affected by several heavy rainfall events in the last decades. In this work, we investigated three ~1-day heavy rainfall (>35 mm/h and 100–220 mm/day) events in 2007, 2011, and 2012 that occurred in the clayey hilly coastal NE Abruzzo area, analyzing cumulative rainfall, intensity, and duration while mapping triggered geomorphological effects (soil erosion and accumulation) and evaluating average erosion. The analysis provides contributions to a soil erosion assessment of clayey landscapes that characterizes the Adriatic hilly area, with an estimation of rainfall-triggering thresholds for heavy soil erosion and a comparison of erosion in single events with rates known in the Mediterranean area. The triggering threshold for heavy soil erosion shows an expected value of ~100–110 mm. The estimated average soil erosion is from moderate to high (0.08–3.08 cm in ~1-day heavy rainfall events) and shows a good correlation with cumulative rainfall and a poor correlation with peak rainfall intensity. This work outlines the strong impact of soil erosion on the landscape changes in the Abruzzo and Adriatic hilly areas.

The application of remote sensing is considered to be highly efficient in the field of geology, particularly for mapping and discrimination between lithological units, as well as the identification of different surface minerals which enable the acquisition of all the optical and radar data needed to obtain more reliable and particular information, especially in inaccessible areas. Landsat 8 (Operational Land Imager) image bands, which include color compositions 7, 4, and 1, band ratios 7/5, 4/2, 3/1, and 6/3, 6/1, 5/2, Principal Component Analyses PC1, PC4, and PC3, and directional filtering at 0° (NS), 45° (NE–SW), and 90° (EW), were used to analyze the spectral characteristics of the lithological units of the study area and delineate the alteration zones which may contain significant concentrations of base metals. Combined with geological field observations, these data were integrated and analyzed in a geographic information system to establish a multi-criteria characterization of mineralized zones. Hence, the use of remote sensing contributed to the improvement and updating of available geological maps of the Oumjrane–Boukerzia area. Lineament extraction allowed for performed analyses of the structural elements that play a crucial role in the mineral distribution in the study area. Several of the targeted areas were examined in the field by selective sampling. Consequently, the results helped identify new mineralized zones with important mining potential which could be evaluated in the future through detailed geophysical and geochemical work.

Abstract. Identification of high potential risk and susceptible zones for natural hazards of geological origin is one of the most important applications of advanced remote sensing technology. Yearly, several landslides occur during heavy monsoon rainfall in Kelantan River basin, Peninsular Malaysia. Flooding and subsequent landslide occurrences generated significant damage to livestock, agricultural produce, homes and businesses in the Kelantan River basin. In this study, remote sensing data from the recently launched Landsat-8 and Phased Array type L-band Synthetic Aperture Radar-2 (PALSAR-2) on board the Advanced Land Observing Satellite-2 (ALOS-2) were used to map geologic structural and topographical features in the Kelantan River basin for identification of high potential risk and susceptible zones for landslides and flooding areas. The data were processed for a comprehensive analysis of major geological structures and detailed characterizations of lineaments, drainage patterns and lithology at both regional and district scales. The analytical hierarchy process (AHP) approach was used for landslide susceptibility mapping. Several factors such as slope, aspect, soil, lithology, normalized difference vegetation index (NDVI), land cover, distance to drainage, precipitation, distance to fault and distance to the road were extracted from remote sensing satellite data and fieldwork to apply the AHP approach. Directional convolution filters were applied to ALOS-2 data for identifying linear features in particular directions and edge enhancement in the spatial domain. Results indicate that lineament occurrence at regional scale was mainly linked to the N–S trending of the Bentong–Raub Suture Zone (BRSZ) in the west and Lebir Fault Zone in the east of the Kelantan state. The combination of different polarization channels produced image maps that contain important information related to water bodies, wetlands and lithological units. The N–S, NE–SW and NNE–SSW lineament trends and dendritic, sub-dendritic and rectangular drainage patterns were detected in the Kelantan River basin. The analysis of field investigation data indicates that many of flooded areas were associated with high potential risk zones for hydrogeological hazards such as wetlands, urban areas, floodplain scroll, meander bend, dendritic and sub-dendritic drainage patterns, which are located in flat topographic regions. Numerous landslide points were located in a rectangular drainage system that is associated with a topographic slope of metamorphic and quaternary rock units. Consequently, structural and topographical geology maps were produced for Kelantan River basin using PALSAR-2 data, which could be broadly applicable for landslide hazard mapping and identification of high potential risk zone for hydrogeological hazards. Geohazard mitigation programs could be conducted in the landslide recurrence regions and flooded areas to reduce natural catastrophes leading to loss of life and financial investments in the Kelantan River basin. In this investigation, Landsat-8 and ALOS-2 have proven to successfully provide advanced Earth observation satellite data for disaster monitoring in tropical environments.

Abstract. Reconstructing the growth and decay of palaeo-ice sheets is critical to understanding the relationships between global climate and sea-level change and to testing numerical ice sheet models. In this study, we integrate recently acquired high-resolution 2D seismic reflection and borehole datasets from two wind-farm sites offshore of the Netherlands to investigate the sedimentary, geomorphological, and glaciotectonic records left by the Saalian Drenthe substage glaciation, when Scandinavian land ice reached its southernmost extent in the southern North Sea (ca. 160 ka, Marine Isotope Stage 6). A complex assemblage of glaciogenic sediments and glaciotectonic structures is buried in the shallow subsurface. The northern wind-farm site revealed a set of NE–SW-oriented subglacial meltwater channels filled with till and glaciofluvial sediments and an E–W-trending composite ridge with local evidence of intense glaciotectonic deformation that denotes the maximum limit reached by the ice. Based on the identified glacial geomorphology, we refine the mapping of the maximum ice sheet extent offshore, revealing that the ice margin morphology is more complex than previously envisaged and displaying a lobate shape. Ice retreat left an unusual paraglacial landscape characterised by the progressive infilling of topographic depressions carved by ice-driven erosion and a diffuse drainage network of outwash channels. The net direction of outwash was to the west and southwest into a nearby glacial basin. We demonstrate the utility of offshore wind-farm data as records of process–form relationships preserved in buried landscapes, which can be utilised in refining palaeo-ice sheet margins and informing longer-term drivers of change in low-relief settings.

Growth faults are widely distributed in the Greater Houston (GH) region of Texas, USA, and the existence of faulting could interrupt groundwater flow and aggravate local deformation. Faulting-induced property damages have become more pronounced over the last few years, necessitating further investigation of these faults. Interferometric synthetic aperture radar (InSAR) has been proved to be an effective way for mapping deformations along and/or across fault traces. However, extracting short-wavelength small-amplitude creep signal (about 10–20 mm/yr) from long time span interferograms is extremely difficult, especially in agricultural or vegetated areas. This study aims to position, map and monitor the rate, extent, and temporal evolution of faulting over GH at the highest spatial density using Multi-temporal InSAR (MTI) technique. The MTI method, which maximizes usable signal and correlation, has the ability to identify and monitor faulting and provide accurate and detailed depiction of active faults. Two neighboring L-band Advanced Land Observing (ALOS) tracks (2007–2011) are utilized in this research. Numerous areas of sharp phase discontinuities have been discerned from MTI-derived velocity map. InSAR measurements allow us to position both previously known faults traces as well as nucleation of new fractures not previously revealed by other ground/space techniques. Faulting damages and surface scarps were evident at most InSAR-mapped fault locations through our site investigations. The newly discovered fault activation appears to be related to excessive groundwater exploitation from the Jasper aquifer in Montgomery County. The continuous mining of groundwater from the Jasper aquifer formed new water-level decline cones over Montgomery County, corroborating the intensity of new fractures. Finally, we elaborate the localized fault activities and evaluate the characteristics of faulting (locking depth and slip rate) through modeling MTI-derived deformation maps. The SW–NE-oriented faults pertain to normal faulting with an average slip rate of 7–13 mm/yr at a shallow locking depth of less than 4 km. Identifying and characterizing active faults through MTI and deformation modeling can provide insights into faulting, its causal mechanism and potential damages to infrastructure over the GH.

This publication looks at ongoing legacy mapping studies at one of the geographical sites of Lithuanian water and road maps considering the historical portrayal of events in perspective and highlighting the most significant developments at several stages and cartographic development times. This article presents the old maps displaying water and land roads in Lithuania. The paper puts forward the authors and designers of the maps having marked roads and their characteristics, including issue dates, scale, the names of territorial unites and geographical objects etc. The article provides extensive data on the evolution of the development of Lithuanian roads. When summarizing research results of the study, the authors conclude that the roads marked in the ancient maps are excellent historical witnesses helping with a better understanding of a long and complicated process of forming the Lithuanian state. The authors stress the need to restore the old Lithuanian inland road maps so that historically important documents of state development should not be buried in archives but become available not only to historical researchers but also to the general public. Santrauka Tęsiant senosios kartografijos tyrinėjimus, šioje publikacijoje norima pažvelgti į vieno iš geografinių objektų – Lietuvos vandens ir sausumos kelių vaizdavimą žemėlapiuose istorinių įvykių perspektyvoje, išryškinti reikšmingiausius kelių raidos etapus ir kartografijos raidos momentus. Pristatomi senųjų žemėlapių, kuriuose atvaizduoti Lietuvos vandens ir sausumos keliai, kūrėjai ir sudarytojai, pateikiamos žemėlapių charakteristikos: leidimo metai, vaizduojami teritoriniai vienetai ir geografiniai objektai. Pateikiama daug duomenų apie Lietuvos kelių raidą. Apibendrindami tyrimo rezultatus autoriai daro išvadą, kad senoviniai žemėlapiai, kuriuose pažymėti keliai, yra puikūs istorijos liudytojai, padedantys geriau suvokti ilgą ir sudėtingą Lietuvos valstybės formavimosi procesą. Žemėlapių analizė ir kraštotyrininkų atliekamos paieškos vietose atveria galimybes atkurti senųjų Lietuvos vidaus kelių žemėlapį, kad ir šiandien svarbūs istoriniai valstybės civilizacijos dokumentai nedūlėtų archyvuose, o taptų prieinami ne vien istorijos tyrinėtojams, bet ir plačiajai visuomenei. Резюме Исследовано отображение древних дорог Литвы на старинных картах в перспективе их развития с выделением наиболее важных этапов развития дорожных сетей и самой картографии. Приведены старинные карты разных времен с отображением на них древних литовских дорог и представлены их характеристики: составители и годы издания карт, локализация географических объектов, размещение древних дорог и др. Приведены обширные данные об эволюции развития литовских дорог. Подводя итог результатам исследования, авторы приходят к выводу, что старинные карты древних дорог являются прекрасными историческими свидетельствами, способствующими лучшему пониманию сложного и длительного процесса формирования Литовского государства. Авторы подчеркивают необходимость воссоздания карты литовских исторических внутренних дорог с тем, чтобы важные исторические свидетельства цивилизации государства не были похоронены в архивах, a стали доступными для широкой общественности.

The Search for residential land use option at Abakaliki area in Ebonyi state, Nigeria was carried out using Geographic Information System (GIS). Some laboratory experiments were incorporated to delineate some complementary information for the study. Ten determinants as capability factors were selected to develop thematic maps for over-lay analysis using software incorporated in Geographic Information System (GIS). The percentage influences of these determinants were also considered to facilitate the interpretation of the results. An Arch view model builder was employed in the over-lay analysis. The result produced the composite map where the residential land use zones were isolated, towards sustainable land use for residential purposes in the area. The residential land use option occurred at the NE-Eastern zone in the North west, South west and South east locations of the study area respectively.

The aim of this study is to elucidate the character of the earliest phases of Jurassic rifting in North-East Greenland. To achieve this, detailed sedimentological analysis and geological mapping were undertaken on the outcrops of central Kuhn Ø (74°53’55’’N,20°20’56”W). In this region the basement is overlain by the fluvial Bastians Dal Formation (Middle Jurassic) which is, in turn, overlain by the coal-bearing Muslingebjerg Formation. A maximum thickness of 140 m is calculated for the Bastians Dal Formation and mapping of stratal geometries demonstrates thinning to both the north and south, confirming that these deposits infill a palaeovalley. Predominantly south-westward palaeocurrent orientations are observed and likely reflect the orientation of the palaeovalley (NE–SW). The overlying Muslingebjerg Formation displays significant lateral variations in thickness as well as facies, thickening from a 5-m-thick coal seam in the north to 50 m in the south. Southern outcrops include two intervals of fine-grained sandstones displaying low-angle and trough cross-bedding some of which contain suggestions of tidal bundling. The arrangement of facies suggests that coal formation occurred in both fluvial- and shallow-marine (tidal?) environments. Coals are similar to those described elsewhere from the Muslingebjerg Formation and display subtle differences consistent with variable degrees of marine influence. Mapping demonstrates the presence of an NE–SW-oriented bounding fault in the south of the region into which the Muslingebjerg Formation thickens. This likely also controlled the orientation of the underlying NE–SW-aligned palaeovalley and is oblique to the proposed overall N–S orientation of faulting related to rifting through the Mid to Late Jurassic. Instead, these alignments resemble those that define pre-Jurassic phases of rifting and may therefore indicate a transitional phase of tectonism. Faulting on a similar alignment can be traced SW, cutting Lindeman Fjord and following the valleys east of the A. P. Olsen Land plateau.

In Mediterranean semi-arid regions, shallow aquifers are generally over-exploited. Several Deeper groundwater boreholes exhibit serious problems of low hydraulic yield and dry wells. The existence of a reliable information about the regional geological structure can enhance the success of deep well programs. Geophysics proved very useful, as a fast and efficient tool to understand the structuring of deep hydrogeology aquifers. Indeed, the identification and characterization of the deep structures of the Bir Drassen – Sidi Toumi region (Cap-Bon, Northeastern Tunisia) contribute to a better quantification of the groundwater potential for asustainable management. This province can be considered as the SW extension of the NE-SW Jebel Abderrahman atlasic anticline, one of the most prominent geological structures in Northeastern Tunisia. To identify the Miocene and Oligocene reservoirs, a geophysical study was carried out, using advanced gravity analysis, supported by boreholes, seismic and geoelectrical calibration. Different gravity filters were applied to reveal the Sub-basins architecture and faulting network in the region. Using the calculation of maxima of Total Horizontal Gravity Derivative and Euler's solutions distribution, a set of deep faults of different directions was divulged. Time Domain Electromagnetic mapping illustrate the influence of fault zones on the regional arrangement of sub-basins aquifers and their recharge processes. Finally, a 3D residual gravity inversion was carried out, to better image the tectonically controlled depocenters associated with prolific thick fluvial-deltaic reservoirs. These “Deep Aquifer Valley” can be suggested as strategic targets for deep hydrogeological exploration planning.

Northern high-alpine regions are currently experiencing rapid warming, which often results in the degradation of sub-surface permafrost and the upslope advancement of vegetation. The present study combines remotely sensed MODIS Land Surface Temperatures (LSTs) and the Normalised Difference Vegetation Index (NDVI) with observed air temperatures to model the thermal and vegetational dynamics in NE Jotunheimen (Norway) for the period 1957–2019. An altitudinal transect on the north-facing slope of Galdhøpiggen was used for ground truthing. Results indicate a substantial warming trend since the late 1950s, accompanied by increased NDVI. The spatial and temporal patterns of observed change were not uniform. Winter surface temperatures increased most rapidly, by 2.4–2.8°C at mid- and low altitudes (600–1500 m a.s.l.). The highest increases in NDVI (by ∼0.1) were detected during the growing season (April–September) and over the mid-range altitudes (1050–1500 m a.s.l.), that is, above the tree line on Galdhøpiggen. We attribute this to increased shrubification at these altitudes. Our results confirm that the surface temperatures near the previously estimated lower altitudinal limit of permafrost (∼1450 m a.s.l.) have continued to increase during the past decade, likely facilitating further permafrost degradation. Finally, we demonstrate that mapping remotely sensed mean growing season LSTs below 0°C can be used to identify areas suitable for continuous sub-surface permafrost, and mean June–September LSTs above 7°C can detect areas suitable for tree ( Betula pubescens) growth in NE Jotunheimen.

The present work consists in identifying the geological facies and defining the dominant orientation of the lineaments in order to improve the knowledge on the local geodynamics in the Northern Sub-Atlasic zone of the Marrakesh High Atlas, the Ait Ourir basin region, The latter is characterized by a post-Hercynian Mesozoic cover folded into broad synclines with flat and subhorizontal bottom, separated by ejective and sharp anticlines. For this purpose, multispectral data from Landsat 8 operational land imager (OLI) have been applied in a platform of ArcGIS software and through the treatments offered by this software, namely, the principal component analysis (PCA), the band ratios (BR) and the transformation of the minimum noise fraction (MNF), a better lithological discrimination and description was brought to the set of geological formations that form the studied basins. In parallel, the results obtained by the method of classification by Support Vector Machine (SVM), which is based on the joint use of geomorphic features, textures and multispectral data from Landsat 8 satellite, showed an excellent correlation. With the simplified geological map of the northern slope of the High Atlas of Marrakesh (1/10000) and field data from the study area. The result shows an overall accuracy of classification of Landsat8 OLI data by SVM which is 96.64% and the Kappa coefficient which is 0.98 and a positive correlation is shown between lineament structures and dominant orientations of the extracted lineaments. The highest densities obtained are N-S, NE-SW and NNE-SSW oriented with the predominance of the first direction.

Karst is a three-dimensional landscape that occurs in soluble bedrock (typically limestone, marble, dolostone, gypsum or halite) and is defined by a solutionally weathered surface, a subsurface drainage system (where conduit-flow dominates), and underground openings and caves. Karst can host unique flora and subsurface fauna, as well as a wide range of other scientific, recreational and cultural values. Karst and potential karst areas underlie approximately 10% of British Columbia (BC), but the distribution and extent of this landscape has yet to be fully explored and delineated. Some of the most extensive and well-developed karst areas occur within the forestedlimestone areas of coastal BC, such as on Vancouver Island and Haida Gwaii, where numerous surface karst features and caves are known. Karst in the interior plateau regions of British Columbia is less well known, being in part covered by thick deposits of glacial materials. Alpine karst regions are most apparent in the Rocky Mountains where there are limestone plateaus, karst drainages and cave systems that have close connections to past and present glacial systems. Mapping of karst is a critical component for any land-use or resource development activity in all regions of British Columbia, as the environmental impacts on karst and its associated values are potentially significant. The regional distribution of karst in BC is not well mapped, with only an office-based reconnaissance karst potential map (1:250,000-scale) and a related database completed in 1999. A renewed effort should now be made to better map karst across British Columbia using digital bedrock mapping data released in 2017, combined with more recent satellite imagery and improved field knowledge.RÉSUMÉLe karst est un paysage tridimensionnel qui se présente dans le substrat rocheux soluble (généralement calcaire, marbre, dolomite, gypse ou halite) et est défini par une surface altérée par dissolution, un système de drainage souterrain (où l’écoulement par conduit domine) et des ouvertures et cavernes souterraines. Le karst peut abriter une flore et une faune souterraine unique, ainsi qu’une grande variété d’autres ressources scientifiques, de loisir et culturelles. Les zones karstiques et potentiellement karstiques constituent environ 10% de la surface de la Colombie-Britannique, mais la répartition et l’étendue de ce paysage n’a pas été complètement explorées et circonscrites. Certaines des zones karstiques les plus étendues et les mieux développées se trouvent dans les calcaires des zones calcaires boisées de la côte de la Colombie-Britannique, telles que l’île de Vancouver et l’archipel de Haida Gwaii, où l’on connaît de nombreuses caractéristiques karstiques de surface et des cavernes. Le karst des régions des plateaux intérieurs de la Colombie-Britannique est moins bien connu, étant en partie recouvert d’épais dépôts de matériaux glaciaires. Les régions karstiques alpines sont plus apparentes dans les montagnes Rocheuses où se trouvent des plateaux calcaires, des bassins de drainage karstiques et des systèmes de cavernes étroitement liés aux systèmes glaciaires passés et contemporains. La cartographie du karst est une constituante essentielle de toute activité d’utilisation du terrain ou de développement des ressources dans toutes les régions de la Colombie-Britannique, car les impacts environnementaux sur le karst et ses bénéfices associés sont potentiellement importants. La distribution régionale et les caractéristiques des karsts en Colombie-Britannique ne sont pas bien cartographiées, avec seulement une carte de reconnaissance du potentiel karstique établie par une étude de bureau (à l’échelle de 1/250 000) et une base de données associée, complétées en 1999. Il faut aujourd’hui améliorer la cartographie de karsts en Colombie-Britannique en utilisant les données numériques de cartographie du substrat rocheux publiées en 2017, combinées avec des images satellite plus récentes et à une meilleure connaissance du terrain.

At a time when almost every human transgression, illness, profession and other personal aspect of life has been chronicled in autobiographical writing (Rak)—in 1998 Zinsser called ours “the age of memoir” (3)—writing about fat is one of the most recent subjects to be addressed in this way. This article surveys a range of contemporary autobiographical texts that are titled with, or revolve around, that powerful and most evocative word, “fat”. Following a number of cultural studies of fat in society (Critser; Gilman, Fat Boys; Fat: A Cultural History; Stearns), this discussion views fat in socio-cultural terms, following Lupton in understanding fat as both “a cultural artefact: a bodily substance or body shape that is given meaning by complex and shifting systems of ideas, practices, emotions, material objects and interpersonal relationships” (i). Using a case study approach (Gerring; Verschuren), this examination focuses on a range of texts from autobiographical cookbooks and memoirs to novel-length graphic works in order to develop a preliminary taxonomy of these works. In this way, a small sample of work, each of which (described below) explores an aspect (or aspects) of the form is, following Merriam, useful as it allows a richer picture of an under-examined phenomenon to be constructed, and offers “a means of investigating complex social units consisting of multiple variables of potential importance in understanding the phenomenon” (Merriam 50). Although the sample size does not offer generalisable results, the case study method is especially suitable in this context, where the aim is to open up discussion of this form of writing for future research for, as Merriam states, “much can be learned from […] an encounter with the case through the researcher’s narrative description” and “what we learn in a particular case can be transferred to similar situations” (51). Pro-Fat Autobiographical WritingAlongside the many hundreds of reduced, low- and no-fat cookbooks and weight loss guides currently in print that offer recipes, meal plans, ingredient replacements and strategies to reduce fat in the diet, there are a handful that promote the consumption of fats, and these all have an autobiographical component. The publication of Jennifer McLagan’s Fat: An Appreciation of a Misunderstood Ingredient, with Recipes in 2008 by Ten Speed Press—publisher of Mollie Katzen’s groundbreaking and influential vegetarian Moosewood Cookbook in 1974 and an imprint now known for its quality cookbooks (Thelin)—unequivocably addressed that line in the sand often drawn between fat and all things healthy. The four chapter titles of this cookbook— “Butter,” subtitled “Worth It,” “Pork Fat: The King,” “Poultry Fat: Versatile and Good For You,” and, “Beef and Lamb Fats: Overlooked But Tasty”—neatly summarise McLagan’s organising argument: that animal fats not only add an unreplaceable and delicious flavour to foods but are fundamental to our health. Fat polarised readers and critics; it was positively reviewed in prominent publications (Morris; Bhide) and won influential food writing awards, including 2009 James Beard Awards for Single Subject Cookbook and Cookbook of the Year but, due to its rejection of low-fat diets and the research underpinning them, was soon also vehemently criticised, to the point where the book was often described in the media as “controversial” (see Smith). McLagan’s text, while including historical, scientific and gastronomic data and detail, is also an outspokenly personal treatise, chronicling her sensual and emotional responses to this ingredient. “I love fat,” she begins, continuing, “Whether it’s a slice of foie gras terrine, its layer of yellow fat melting at the edges […] hot bacon fat […] wilting a plate of pungent greens into submission […] or a piece of crunchy pork crackling […] I love the way it feels in my mouth, and I love its many tastes” (1). Her text is, indeed, memoir as gastronomy / gastronomy as memoir, and this cookbook, therefore, an example of the “memoir with recipes” subgenre (Brien et al.). It appears to be this aspect – her highly personal and, therein, persuasive (Weitin) plea for the value of fats – that galvanised critics and readers.Molly Chester and Sandy Schrecengost’s Back to Butter: A Traditional Foods Cookbook – Nourishing Recipes Inspired by Our Ancestors begins with its authors’ memoirs (illness, undertaking culinary school training, buying and running a farm) to lend weight to their argument to utilise fats widely in cookery. Its first chapter, “Fats and Oils,” features the familiar butter, which it describes as “the friendly fat” (22), then moves to the more reviled pork lard “Grandma’s superfood” (22) and, nowadays quite rarely described as an ingredient, beef tallow. Grit Magazine’s Lard: The Lost Art of Cooking with Your Grandmother’s Secret Ingredient utilises the rhetoric that fat, and in this case, lard, is a traditional and therefore foundational ingredient in good cookery. This text draws on its publisher’s, Grit Magazine (published since 1882 in various formats), long history of including auto/biographical “inspirational stories” (Teller) to lend persuasive power to its argument. One of the most polarising of fats in health and current media discourse is butter, as was seen recently in debate over what was seen as its excessive use in the MasterChef Australia television series (see, Heart Foundation; Phillipov). It is perhaps not surprising, then, that butter is the single fat inspiring the most autobiographical writing in this mode. Rosie Daykin’s Butter Baked Goods: Nostalgic Recipes from a Little Neighborhood Bakery is, for example, typical of a small number of cookbooks that extend the link between baking and nostalgia to argue that butter is the superlative ingredient for baking. There are also entire cookbooks dedicated to making flavoured butters (Vaserfirer) and a number that offer guides to making butter and other (fat-based) dairy products at home (Farrell-Kingsley; Hill; Linford).Gabrielle Hamilton’s Blood, Bones and Butter: The Inadvertent Education of a Reluctant Chef is typical among chef’s memoirs in using butter prominently although rare in mentioning fat in its title. In this text and other such memoirs, butter is often used as shorthand for describing a food that is rich but also wholesomely delicious. Hamilton relates childhood memories of “all butter shortcakes” (10), and her mother and sister “cutting butter into flour and sugar” for scones (15), radishes eaten with butter (21), sautéing sage in butter to dress homemade ravoli (253), and eggs fried in browned butter (245). Some of Hamilton’s most telling references to butter present it as an staple, natural food as, for instance, when she describes “sliced bread with butter and granulated sugar” (37) as one of her family’s favourite desserts, and lists butter among the everyday foodstuffs that taste superior when stored at room temperature instead of refrigerated—thereby moving butter from taboo (Gwynne describes a similar process of the normalisation of sexual “perversion” in erotic memoir).Like this text, memoirs that could be described as arguing “for” fat as a substance are largely by chefs or other food writers who extol, like McLagan and Hamilton, the value of fat as both food and flavouring, and propose that it has a key role in both ordinary/family and gourmet cookery. In this context, despite plant-based fats such as coconut oil being much lauded in nutritional and other health-related discourse, the fat written about in these texts is usually animal-based. An exception to this is olive oil, although this is never described in the book’s title as a “fat” (see, for instance, Drinkwater’s series of memoirs about life on an olive farm in France) and is, therefore, out of the scope of this discussion.Memoirs of Being FatThe majority of the other memoirs with the word “fat” in their titles are about being fat. Narratives on this topic, and their authors’ feelings about this, began to be published as a sub-set of autobiographical memoir in the 2000s. The first decade of the new millennium saw a number of such memoirs by female writers including Judith Moore’s Fat Girl (published in 2005), Jen Lancaster’s Such a Pretty Fat: One Narcissist’s Quest to Discover If Her Life Makes Her Ass Look Big, or Why Pie Is Not the Answer, and Stephanie Klein’s Moose: A Memoir (both published in 2008) and Jennifer Joyne’s Designated Fat Girl in 2010. These were followed into the new decade by texts such as Celia Rivenbark’s bestselling 2011 You Don’t Sweat Much for a Fat Girl, and all attracted significant mainstream readerships. Journalist Vicki Allan pulled no punches when she labelled these works the “fat memoir” and, although Sidonie Smith and Julia Watson’s influential categorisation of 60 genres of life writing does not include this description, they do recognise eating disorder and weight-loss narratives. Some scholarly interest followed (Linder; Halloran), with Mitchell linking this production to feminism’s promotion of the power of the micro-narrative and the recognition that the autobiographical narrative was “a way of situating the self politically” (65).aken together, these memoirs all identify “excess” weight, although the response to this differs. They can be grouped as: narratives of losing weight (see Kuffel; Alley; and many others), struggling to lose weight (most of these books), and/or deciding not to try to lose weight (the smallest number of works overall). Some of these texts display a deeply troubled relationship with food—Moore’s Fat Girl, for instance, could also be characterised as an eating disorder memoir (Brien), detailing her addiction to eating and her extremely poor body image as well as her mother’s unrelenting pressure to lose weight. Elena Levy-Navarro describes the tone of these narratives as “compelled confession” (340), mobilising both the conventional understanding of confession of the narrator “speaking directly and colloquially” to the reader of their sins, failures or foibles (Gill 7), and what she reads as an element of societal coercion in their production. Some of these texts do focus on confessing what can be read as disgusting and wretched behavior (gorging and vomiting, for instance)—Halloran’s “gustatory abject” (27)—which is a feature of the contemporary conceptualisation of confession after Rousseau (Brooks). This is certainly a prominent aspect of current memoir writing that is, simultaneously, condemned by critics (see, for example, Jordan) and popular with readers (O’Neill). Read in this way, the majority of memoirs about being fat are about being miserable until a slimming regime of some kind has been undertaken and successful. Some of these texts are, indeed, triumphal in tone. Lisa Delaney’s Secrets of a Former Fat Girl is, for instance, clear in the message of its subtitle, How to Lose Two, Four (or More!) Dress Sizes—And Find Yourself Along the Way, that she was “lost” until she became slim. Linden has argued that “female memoir writers frequently describe their fat bodies as diseased and contaminated” (219) and “powerless” (226). Many of these confessional memoirs are moving narratives of shame and self loathing where the memoirist’s sense of self, character, and identity remain somewhat confused and unresolved, whether they lose weight or not, and despite attestations to the contrary.A sub-set of these memoirs of weight loss are by male authors. While having aspects in common with those by female writers, these can be identified as a sub-set of these memoirs for two reasons. One is the tone of their narratives, which is largely humourous and often ribaldly comic. There is also a sense of the heroic in these works, with male memoirsts frequently mobilising images of battles and adversity. Texts that can be categorised in this way include Toshio Okada’s Sayonara Mr. Fatty: A Geek’s Diet Memoir, Gregg McBride and Joy Bauer’s bestselling Weightless: My Life as a Fat Man and How I Escaped, Fred Anderson’s From Chunk to Hunk: Diary of a Fat Man. As can be seen in their titles, these texts also promise to relate the stratgies, regimes, plans, and secrets that others can follow to, similarly, lose weight. Allen Zadoff’s title makes this explicit: Lessons Learned on the Journey from Fat to Thin. Many of these male memoirists are prompted by a health-related crisis, diagnosis, or realisation. Male body image—a relatively recent topic of enquiry in the eating disorder, psychology, and fashion literature (see, for instance, Bradley et al.)—is also often a surprising motif in these texts, and a theme in common with weight loss memoirs by female authors. Edward Ugel, for instance, opens his memoir, I’m with Fatty: Losing Fifty Pounds in Fifty Miserable Weeks, with “I’m haunted by mirrors … the last thing I want to do is see myself in a mirror or a photograph” (1).Ugel, as that prominent “miserable” in his subtitle suggests, provides a subtle but revealing variation on this theme of successful weight loss. Ugel (as are all these male memoirists) succeeds in the quest be sets out on but, apparently, despondent almost every moment. While the overall tone of his writing is light and humorous, he laments every missed meal, snack, and mouthful of food he foregoes, explaining that he loves eating, “Food makes me happy … I live to eat. I love to eat at restaurants. I love to cook. I love the social component of eating … I can’t be happy without being a social eater” (3). Like many of these books by male authors, Ugel’s descriptions of the food he loves are mouthwatering—and most especially when describing what he identifies as the fattening foods he loves: Reuben sandwiches dripping with juicy grease, crispy deep friend Chinese snacks, buttery Danish pastries and creamy, rich ice cream. This believable sense of regret is not, however, restricted to male authors. It is also apparent in how Jen Lancaster begins her memoir: “I’m standing in the kitchen folding a softened stick of butter, a cup of warmed sour cream, and a mound of fresh-shaved Parmesan into my world-famous mashed potatoes […] There’s a maple-glazed pot roast browning nicely in the oven and white-chocolate-chip macadamia cookies cooling on a rack farther down the counter. I’ve already sautéed the almonds and am waiting for the green beans to blanch so I can toss the whole lot with yet more butter before serving the meal” (5). In the above memoirs, both male and female writers recount similar (and expected) strategies: diets, fasts and other weight loss regimes and interventions (calorie counting, colonics, and gastric-banding and -bypass surgery for instance, recur); consulting dieting/health magazines for information and strategies; keeping a food journal; employing expert help in the form of nutritionists, dieticians, and personal trainers; and, joining health clubs/gyms, and taking up various sports.Alongside these works sit a small number of texts that can be characterised as “non-weight loss memoirs.” These can be read as part of the emerging, and burgeoning, academic field of Fat Studies, which gathers together an extensive literature critical of, and oppositional to, dominant discourses about obesity (Cooper; Rothblum and Solovay; Tomrley and Naylor), and which include works that focus on information backed up with memoir such as self-described “fat activist” (Wann, website) Marilyn Wann’s Fat! So?: Because You Don’t Have to Apologise, which—when published in 1998—followed a print ’zine and a website of the same title. Although certainly in the minority in terms of numbers, these narratives have been very popular with readers and are growing as a sub-genre, with well-known actress Camryn Manheim’s New York Times-bestselling memoir, Wake Up, I'm Fat! (published in 1999) a good example. This memoir chronicles Manheim’s journey from the overweight and teased teenager who finds it a struggle to find friends (a common trope in many weight loss memoirs) to an extremely successful actress.Like most other types of memoir, there are also niche sub-genres of the “fat memoir.” Cheryl Peck’s Fat Girls and Lawn Chairs recounts a series of stories about her life in the American Midwest as a lesbian “woman of size” (xiv) and could thus be described as a memoir on the subjects of – and is, indeed, catalogued in the Library of Congress as: “Overweight women,” “Lesbians,” and “Three Rivers (Mich[igan]) – Social life and customs”.Carol Lay’s graphic memoir, The Big Skinny: How I Changed My Fattitude, has a simple diet message – she lost weight by counting calories and exercising every day – and makes a dual claim for value of being based on both her own story and a range of data and tools including: “the latest research on obesity […] psychological tips, nutrition basics, and many useful tools like simplified calorie charts, sample recipes, and menu plans” (qtd. in Lorah). The Big Skinny could, therefore, be characterised with the weight loss memoirs above as a self-help book, but Lay herself describes choosing the graphic form in order to increase its narrative power: to “wrap much of the information in stories […] combining illustrations and story for a double dose of retention in the brain” (qtd. in Lorah). Like many of these books that can fit into multiple categories, she notes that “booksellers don’t know where to file the book – in graphic novels, memoirs, or in the diet section” (qtd. in O’Shea).Jude Milner’s Fat Free: The Amazing All-True Adventures of Supersize Woman! is another example of how a single memoir (graphic, in this case) can be a hybrid of the categories herein discussed, indicating how difficult it is to neatly categorise human experience. Recounting the author’s numerous struggles with her weight and journey to self-acceptance, Milner at first feels guilty and undertakes a series of diets and regimes, before becoming a “Fat Is Beautiful” activist and, finally, undergoing gastric bypass surgery. Here the narrative trajectory is of empowerment rather than physical transformation, as a thinner (although, importantly, not thin) Milner “exudes confidence and radiates strength” (Story). ConclusionWhile the above has identified a number of ways of attempting to classify autobiographical writing about fat/s, its ultimate aim is, after G. Thomas Couser’s work in relation to other sub-genres of memoir, an attempt to open up life writing for further discussion, rather than set in placed fixed and inflexible categories. Constructing such a preliminary taxonomy aspires to encourage more nuanced discussion of how writers, publishers, critics and readers understand “fat” conceptually as well as more practically and personally. 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