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Добірка наукової літератури з теми "Pleistocene sea level changes"

Автор: Grafiati

Опубліковано: 10 грудня 2022

Оновлено: 28 січня 2023

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Статті в журналах з теми "Pleistocene sea level changes"

Cosentino, Domenico, Paola Cipollari, Letizia Di Bella, Alessandra Esposito, Costanza Faranda, Guido Giordano, Elsa Gliozzi, et al. "Tectonics, sea-level changes and palaeoenvironments in the early Pleistocene of Rome (Italy)." Quaternary Research 72, no. 1 (July 2009): 143–55. http://dx.doi.org/10.1016/j.yqres.2009.03.003.

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AbstractThe historical site of the Monte Mario lower Pleistocene succession (Rome, Italy) is an important marker of the Pliocene/Pleistocene boundary. Recently, the Monte Mario site was excavated and restudied. A spectacular angular unconformity characterizes the contact between the Monte Vaticano and the Monte Mario formations, which marks the Pliocene/Pleistocene boundary. Biostratigraphical analyses carried out on ostracod, foraminifer, and calcareous nannofossil assemblages indicate an Early Pliocene age (topmost Zanclean, 3.81–3.70 Ma) for the underlying Monte Vaticano Formation, whereas the Monte Mario Formation has been dated as early Pleistocene (Santernian, 1.66–1.59 Ma). Palaeomagnetic analyses point to C2Ar and C1r2r polarity chrons for the Monte Vaticano and the Monte Mario formations, respectively. The Monte Mario Formation consists of two obliquity-forced depositional sequences (MM1 and MM2) characterized by transgressive systems tracts of littoral marine environments at depths, respectively, of 40–80 m and 15–20 m. The data obtained from foraminifer and ostracod assemblages allow us to reconstruct early Pleistocene relative sea-level changes near Rome. At the Plio/Pleistocene transition, a relative sea-level drop of at least 260 m occurred, as a result of both tectonic uplift of the central Tyrrhenian margin and glacio-eustatic changes linked to early Pleistocene glaciation (Marine Isotope Stage 58).

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Karin, Benjamin R., Indraneil Das, Todd R. Jackman, and Aaron M. Bauer. "Ancient divergence time estimates inEutropis rugiferasupport the existence of Pleistocene barriers on the exposed Sunda Shelf." PeerJ 5 (October 27, 2017): e3762. http://dx.doi.org/10.7717/peerj.3762.

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Episodic sea level changes that repeatedly exposed and inundated the Sunda Shelf characterize the Pleistocene. Available evidence points to a more xeric central Sunda Shelf during periods of low sea levels, and despite the broad land connections that persisted during this time, some organisms are assumed to have faced barriers to dispersal between land-masses on the Sunda Shelf.Eutropis rugiferais a secretive, forest adapted scincid lizard that ranges across the Sunda Shelf. In this study, we sequenced one mitochondrial (ND2) and four nuclear (BRCA1,BRCA2,RAG1, andMC1R) markers and generated a time-calibrated phylogeny in BEAST to test whether divergence times between Sundaic populations ofE. rugiferaoccurred during Pleistocene sea-level changes, or if they predate the Pleistocene. We find thatE. rugiferashows pre-Pleistocene divergences between populations on different Sundaic land-masses. The earliest divergence withinE. rugiferaseparates the Philippine samples from the Sundaic samples approximately 16 Ma; the Philippine populations thus cannot be considered conspecific with Sundaic congeners. Sundaic populations diverged approximately 6 Ma, and populations within Borneo from Sabah and Sarawak separated approximately 4.5 Ma in the early Pliocene, followed by further cladogenesis in Sarawak through the Pleistocene. Divergence of peninsular Malaysian populations from the Mentawai Archipelago occurred approximately 5 Ma. Separation among island populations from the Mentawai Archipelago likely dates to the Pliocene/Pleistocene boundary approximately 3.5 Ma, and our samples from peninsular Malaysia appear to coalesce in the middle Pleistocene, about 1 Ma. Coupled with the monophyly of these populations, these divergence times suggest that despite consistent land-connections between these regions throughout the PleistoceneE. rugiferastill faced barriers to dispersal, which may be a result of environmental shifts that accompanied the sea-level changes.

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Spratt, Rachel M., and Lorraine E. Lisiecki. "A Late Pleistocene sea level stack." Climate of the Past 12, no. 4 (April 26, 2016): 1079–92. http://dx.doi.org/10.5194/cp-12-1079-2016.

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Abstract. Late Pleistocene sea level has been reconstructed from ocean sediment core data using a wide variety of proxies and models. However, the accuracy of individual reconstructions is limited by measurement error, local variations in salinity and temperature, and assumptions particular to each technique. Here we present a sea level stack (average) which increases the signal-to-noise ratio of individual reconstructions. Specifically, we perform principal component analysis (PCA) on seven records from 0 to 430 ka and five records from 0 to 798 ka. The first principal component, which we use as the stack, describes ∼ 80 % of the variance in the data and is similar using either five or seven records. After scaling the stack based on Holocene and Last Glacial Maximum (LGM) sea level estimates, the stack agrees to within 5 m with isostatically adjusted coral sea level estimates for Marine Isotope Stages 5e and 11 (125 and 400 ka, respectively). Bootstrapping and random sampling yield mean uncertainty estimates of 9–12 m (1σ) for the scaled stack. Sea level change accounts for about 45 % of the total orbital-band variance in benthic δ18O, compared to a 65 % contribution during the LGM-to-Holocene transition. Additionally, the second and third principal components of our analyses reflect differences between proxy records associated with spatial variations in the δ18O of seawater.

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Spratt, R. M., and L. E. Lisiecki. "A Late Pleistocene sea level stack." Climate of the Past Discussions 11, no. 4 (August 13, 2015): 3699–728. http://dx.doi.org/10.5194/cpd-11-3699-2015.

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Abstract. Late Pleistocene sea level has been reconstructed from ocean sediment core data using a wide variety of proxies and models. However, the accuracy of individual reconstructions is limited by measurement error, local variations in salinity and temperature, and assumptions particular to each technique. Here we present a sea level stack (average) which increases the signal-to-noise ratio of individual reconstructions. Specifically, we perform principal component analysis (PCA) on seven records from 0–430 ka and five records from 0–798 ka. The first principal component, which we use as the stack, describes ~80 % of the variance in the data and is similar using either five or seven records. After scaling the stack based on Holocene and Last Glacial Maximum (LGM) sea level estimates, the stack agrees to within 5 m with isostatically adjusted coral sea level estimates for Marine Isotope Stages 5e and 11 (125 and 400 ka, respectively). When we compare the sea level stack with the δ18O of benthic foraminifera, we find that sea level change accounts for about ~40 % of the total orbital-band variance in benthic δ18O, compared to a 65 % contribution during the LGM-to-Holocene transition. Additionally, the second and third principal components of our analyses reflect differences between proxy records associated with spatial variations in the δ18O of seawater.

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Reeder-Myers, Leslie, Jon M. Erlandson, Daniel R. Muhs, and Torben C. Rick. "Sea level, paleogeography, and archeology on California's Northern Channel islands." Quaternary Research 83, no. 2 (March 2015): 263–72. http://dx.doi.org/10.1016/j.yqres.2015.01.002.

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Sea-level rise during the late Pleistocene and early Holocene inundated nearshore areas in many parts of the world, producing drastic changes in local ecosystems and obscuring significant portions of the archeological record. Although global forces are at play, the effects of sea-level rise are highly localized due to variability in glacial isostatic adjustment (GIA) effects. Interpretations of coastal paleoecology and archeology require reliable estimates of ancient shorelines that account for GIA effects. Here we build on previous models for California's Northern Channel Islands, producing more accurate late Pleistocene and Holocene paleogeographic reconstructions adjusted for regional GIA variability. This region has contributed significantly to our understanding of early New World coastal foragers. Sea level that was about 80-85 m lower than present at the time of the first known human occupation brought about a landscape and ecology substantially different than today. During the late Pleistocene, large tracts of coastal lowlands were exposed, while a colder, wetter climate and fluctuating marine conditions interacted with rapidly evolving littoral environments. At the close of the Pleistocene and start of the Holocene, people in coastal California faced shrinking land, intertidal, and subtidal zones, with important implications for resource availability and distribution.

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Kızıldağ, Nilhan, A. Harun Özdas, and Atilla Uluğ. "Late Pleistocene and Holocene Sea Level Changes in the Hisarönü Gulf, Southeast Aegean Sea." Geoarchaeology 27, no. 3 (April 19, 2012): 220–36. http://dx.doi.org/10.1002/gea.21407.

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Wang, Liyan, Guangxue Li, Jishang Xu, Yong Liu, Lulu Qiao, Dong Ding, Jichao Yang, Olusegun A. Dada, and Qian Li. "Strata sequence and paleochannel response to tectonic, sea-level, and Asian monsoon variability since the late Pleistocene in the South Yellow Sea." Quaternary Research 92, no. 2 (June 27, 2019): 450–68. http://dx.doi.org/10.1017/qua.2019.29.

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AbstractThe continental shelf strata provide information regarding sea-level fluctuation and climate changes in the Quaternary period. A 5831.47-km-long high-resolution seismic profile and borehole core (YS01) were acquired to reconstruct the evolutionary history of the strata in South Yellow Sea (SYS) during the late Pleistocene. The strata recorded three transgression events (HI, HII, and HIII) and three stages of paleochannel development (LI, LII, and LIII). Based on the distribution, thickness, and volume of the strata formed in the three transgressions, we concluded that the scale of the three transgressions during the late Pleistocene was HIII, HI, and HII, in descending order. In addition, our data show that the Yellow River extended to the Yellow Sea Trough during the last glacial maximum. The influence of the tectonic framework on sedimentation in the SYS was completely concealed by sea-level changes and sediment supply in the late Pleistocene (~Marine Isotope Stage 5). Since then, the accommodation space, a crucial prerequisite for sedimentation, has been controlled solely by sea-level changes in the SYS. Furthermore, two “source to sink” models of the neritic shelf in the marine and terrestrial environments were established, including high sea-level and shelf-exposure models.

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Chmal, Henryk. "Pleistocene sea level changes and glacial history of the Hornsund area, Svalbard." Polar Research 5, no. 3 (January 12, 1987): 269–70. http://dx.doi.org/10.3402/polar.v5i3.6883.

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CHMAL, HENRYK. "Pleistocene sea level changes and glacial history of the Hornsund area, Svalbard." Polar Research 5, no. 3 (December 1987): 269–70. http://dx.doi.org/10.1111/j.1751-8369.1987.tb00545.x.

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Prizomwala, S. P., Gunjan Yadav, Nilesh Bhatt, and Komal Sharma. "Late Pleistocene Relative Sea-Level Changes from Saurashtra, West Coast of India." Current Science 115, no. 12 (December 25, 2018): 2297. http://dx.doi.org/10.18520/cs/v115/i12/2297-2301.

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Дисертації з теми "Pleistocene sea level changes"

Grant, Katharine M. "Sea-level change, monsoon variability, and eastern Mediterranean climate over the Late Pleistocene." Thesis, University of Southampton, 2013. https://eprints.soton.ac.uk/362005/.

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A new, radiometrically constrained chronology is developed for a continuous, highresolution relative sea-level (RSL) record from the Red Sea that spans the past 500,000 years (500 ka BP). The method is based on indirect correlation of the RSL record with speleothem δ18O records from Soreq cave, Israel (for the period 0-150 ka BP), and from Sanbao Cave, China (for the period 150-500 ka BP). The new RSL record allows ice-volume (sea-level) phase relationships with key climate-system variables to be examined, without bias from icecore or orbital timescales. The effects of ice-volume changes on monsoon variability are also examined. In a separate development, the Soreq-synchronised interval of the RSL record is used to produce residual oxygen isotope (δ18O) records for the eastern Mediterranean; these represent regional environmental signals which are unbiased by ice-volume and sourcewater effects. Results suggest that, over the last glacial cycle, changes in polar climate and ice-volume were tightly coupled, with centennial-scale response times, and rates of sea-level rise reached at least 1.2 m per century during periods of significant ice-volume reduction. Results also suggest that, at the last five glacial terminations, ice-volume changes generally lagged insolation and atmospheric CO2 rises by ~2-7 kyr. This supports the Milankovitch theory of ice-age cycles, and disputes suggestions that CO2-driven feedback processes initiated glacial terminations. It is shown that ice-volume changes can partly explain East Asian monsoon (EAM) variability. In particular, rapid rates of ice-volume reduction at glacial terminations can account for rapid, millennial-scale variability in summer and winter EAM proxies. This observation is consistent with meltwater pulses into the North Atlantic at terminations leading to a delayed intensification of the summer EAM. Evidence also suggests that changes in different monsoon systems of the northern hemisphere were synchronous during periods of ice-volume minima. Regarding the East African summer monsoon (EAfSM), no systematic phasing is observed between precession minima and EAfSM maxima, and so the common use of a 3-kyr lag to date EAfSM records appears to be too generalised. The new palaeo-environmental reconstructions for the Mediterranean presented here suggest that local precipitation did not increase substantially during the deposition of sapropels S1, S3 and S4, whereas net moisture availability may have been elevated during the interval of sapropel S5 deposition, and within colder glacial periods of the last glacial cycle. The most climatically variable period of the last glacial cycle in the Mediterranean (~30-60 ka BP) coincides with marine isotope stage (MIS) 3.

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Furze, Mark Fernley Alexander. "Late Pleistocene sea-level change in the Celtic Sea : radiocarbon dated macrofauna as palaeo-water-depth indicators." Thesis, Bangor University, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.367395.

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Selby, Katherine. "Late Devensian and Holocene relative sea level changes on the Isle of Skye, Scotland." Thesis, Coventry University, 1997. http://curve.coventry.ac.uk/open/items/0e151cae-7151-0ae4-e4f3-99a45f12ce84/1.

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Five coastal sites have been studies on the Isle of Skye to investigate Late Devensian and Holocene relative sea level changes. In the field, detailed stratigraphical work, geomorphological mapping and levelling were undertaken and representatives cores were sampled. Detailed pollen and diatom analyses were undertaken in the laboratory and samples were submitted for radiocarbon assay where distinct pollen, diatom or lithostratigraphical changes were recorded. Loss on ignition analysis was also undertaken to ascertain the carbon content of the samples. The investigations have revealed that during the Late Devensian marine transgressions were experienced at two sites in southern Skye. These are thought to relate to readvances of the ice that arrested the isostatic recovery of the land, caused renewed isostatic depression and upon deglaciation, allowed marine waters to penetrate the sites. At Inver Aulavaig the transgression is thought to relate to the Wester Ross Readvance recorded in Wester Ross, Coll and Tiree and at Point of Sleat the transgression is thought to relate the Loch Lomond Readvance recorded extensively in Scotland. Relative sea level at Point of Sleat (southern Skye) then fell below an altitude of 4.13mOD at 10460+-50BP and remained low during the early Holocene until the Main Postglacial Transgression occurred. This transgression is recorded at three of the sites: at Inver Aulavaig (southern Skye) at 8850+-70BP where it had attained an altitude of at least 5.10mOD, at Peinchorran (eastern Skye) where it is thought to have been underway by 7980+-BP and attained an altitude of 4.49mOD and at Talisker Bay (western Skye) at 7790+-100BP where it had attained an altitude of -2.18mOD. At Ardmore Bay (northern Skye) it is thought that the Main Postglacial Transgression did not reach an altitude of 3.34mOD. It is possible that barrier formation at some of the sites accompanied the early states of the Mian Postglacial Transgression. It is thought that regression of the sea occurred between circa 6600 BP and circa 5400 BP and remained low until circa 4200 BP when a later rise in relative sea level took place at Peinchorran attaining a maximum altitude of 4.90mOD. A late Holocene transgression is also recorded at Point of Sleat at between circa 3800 BP and circa 2900 BP where it attained an altitude of greater than 4.13mOD and at Inver Aulavaig after circa 3200 BP where it attained an altitude of between 5.10-6.01mOD. It is unclear whether this episode of high relative sea level represents the diachronous nature of one late Holocene transgression or several fluctuations in relative sea level during the late Holocene. Following the late Holocene transgression, relative sea level fell until the present day. Comparison of the data obtained from Skye with the isobase maps and rheological models suggests that the isobases for the Main Lateglacial Shoreline (Firth et al., 1993) show a good fit in age and altitude but the rheological model of Lambeck (1993b) for 10500 BP requires modification. The isobases for the Main Postglacial Shoreline appear to lie circa 4m too high for the sites studied on Skye and the isobases produced for a late Holocene shoreline appear to be greatly in error (Firth et al., 1993). It is possible that the build up of ice during the Loch Lomond Stadial may have had a greater effect on crustal movements than previously thought and this may account for discrepancies identified in the isobase maps. The study of isolation basins and back-barrier environments has allowed an assessment of their potential in recording relative sea level changes. The use of isolation basins in areas devoid of estuarine sedimentation has been particualrly demonstrated. The vegetation reconstruction undertaken, suggests that variations do occur in coastal locations compared to sites further inland, although these are subtle. The dates obtained for the increase in taxa such as 'Corylus avellana' and 'Alnus' and the recording of anthropogenic indicators on the vegetation, agree with those previously obtained for Skye. The use of pollen analysis in verifying the radiocarbon dates obtained, particualrly for the Late Devensian, has been recognised and, combined with diatom analysis, has provided a comprehensive database from which to reconstruct past relative sea levels.

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Tobias, Amy E. "Effects of environmental change on species : Marvacrassatella lineage and the Plio-Pleistocene record of sea level change /." Thesis, This resource online, 1998. http://scholar.lib.vt.edu/theses/available/etd-07132007-143141/.

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au, rhoddell@central murdoch edu, and Richard James Hoddell. "A mtDNA study of aspects of the recent evolutionary history and phylogeographic structure of selected teleosts in coastal environments of south-western Australia." Murdoch University, 2003. http://wwwlib.murdoch.edu.au/adt/browse/view/adt-MU20070831.162328.

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At present, there is a general lack of information regarding the spatial genetic architecture and genetic diversity of estuarine and coastal freshwater fish in Australia or about the interacting intrinsic, extrinsic and historical influences responsible for sculpting these patterns. This thesis represented the first investigation of the phylogeographic structure and recent evolutionary histories of teleost fishes from the coastal and estuarine environments of south-western Australia, using the resolution afforded by mtDNA sequence data. Available evidence indicated that, to different degrees, these species have limited potential for dispersal amongst local assemblages from different water bodies. As this theoretically reduces the confounding effects of recent gene flow on extant genetic structure, these fishes were well suited to studying the influences of historical factors. Historical influences were expected to be particularly profound, given that these coastal environments underwent massive modifications during Late Quaternary eustatic fluctuations. The thesis consists of four major components, which explored different aspects of interspecific and intraspecific phylogeny and p hylogeograp hy of three teleost species, based on mtDNA control region and cytochrome b fragments. First, the relationship between the endemic, 'strictly estuarine' Leptatherina wallacei (Atherinidae) and the more widespread, 'estuarine & marine' 6. presbyteroides was examined, with a view to establishing whether 6. wallacei represents a monophyletic or polyphyletic lineage and whether this species was derived recently (i.e. in Holocene estuaries). Second, the phylogeographic structure and genetic diversity of L. wallacei were investigated and compared with data from L. presbyteroides, with a view to using this information to interpret the recent evolutionary histories of each congener. Third, the divergence between assemblages of L. wallacei inhabiting two isolated coastal lakes was used to estimate a maximal substitution rate for the control region, which was then used to infer general time frames for the divergence between the two Leptatherina species and between the major phylogeographic partitions within each species. Fourth, investigations were initiated into phylogeographic patterns and levels of genetic diversity within and among assemblages of Pseudogobius olorum (Gobiidae) from several coastal lakes and an estuary. Phylogenetic analyses indicated that the two Leptatherina species were characterised by exclusive and reciprocally-monophyletic lineages of haplotypes from both mtDNA regions, supporting the monophyletic origins of L. wallacei. Both 6. wallacei and 6. presbyteroides exhibited high levels of genetic diversity and extensive overall subdivision (e.g. Qsr = 0.691 & 0.644 respectively for control region data). There was a profound phylogeographic break in both species between all conspecific assemblages from the lower west coast (LWC phylogroup) and all those from the south coast (SC phylogroup), which suggested the influences of shared extrinsic and/or historical factors. There was limited genetic structuring within the two major phylogroups of either Leptatherina species, apparently reflecting recent connectivity amongst local assemblages, with subsequent fragmentation and insufficient time for lineage sorting. However, two major phylogeographic breaks distinguished monophyletic control region phylogroups of L. wallacei from the isolated coastal Lake Clifton and Lake Walyungup, consistent with their independent evolution following lacustrine entrapment during the Holocene. The divergence between these two isolated lacustrine assemblages of Leptatherina wallaceiformed the basis for an estimate of the maximal substitution rate of the control region. While these data were unable to provide a precise estimate of the actual rate of molecular evolution, all the evidence suggested that it was proceeding very rapidly. The maximal rate estimate of 172.3% lineage-' MY-' was among the fastest ever reported. Based on this rate, the two Leptatherina species diverged at least 1 SKya, thus rejecting a Holocene origin for L. wallacei. The divergence between the LWC and SC phylogroups of L. wallacei has been ongoing for at least GKya, while the equivalent divergence in L. presbyteroides has been ongoing for at least 11 Kya. As the time frames of these divergences were consistent with periods of massive environmental modifications associated with the end-Pleistocene fall in sea level and the HMT, it was likely that these factors have played important roles in sculpting the species' divergence and intra-specific genetic structure. Although useful in temporally scaling genetic divergences within and between the two Leptatherina species, wider application of this rate estimate to questions regarding other taxa was limited. For example, evident rate heterogeneity between the genera precluded its use with even the relatively closely-related atherinid Atherinosoma elongafa. Phylogeographic analyses identified high levels of genetic diversity and extensive genetic subdivision (e.g. st = 0.652 for control region) amongst an estuarine and several lacustrine assemblages of Pseudogobius olorum, although phylogeographic structure was shallower than in either Leptatherina species. There was increased divergence between three assemblages from the lower west coast and two from the south coast, consistent with the profound break evident in the Leptatherina. One lacustrine assemblage appeared to represent a distinct lineage and a preliminary maximal rate estimate (~61.4% lineage-1 MY-1) was calculated based on the minimum divergence of this assemblage from its nearest conspecifics. Although slower than the rate calculated for L. wallacei, this was still high for teleost fishes. Overall, this study indicated that historical environmental factors, especially those related to Quaternary eustatic changes, have played important roles in sculpting the phylogeography and evolution of three teleost species from south-western Australia. Moreover, as these species have differential dependencies on estuarine environments (is. 'strictly estuarine' vs 'estuarine & marine') and represented two different taxonomic groups (i.e. Atherinoidei & Gobioidei), historical environmental factors may have exerted similar influences on other coastal species in the region.

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Pilaar, Birch Suzanne Elizabeth. "Human adaptations to climate change and sea level rise at the pleistocene-holocene transition in the Northeastern Adriatic." Thesis, University of Cambridge, 2013. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.607721.

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Alves, Daniel Pavani Vicente. "A evolução sedimentar do Canal de São Sebastião, no litoral norte do estado de São Paulo, estudada a partir de uma abordagem sismoestratigráfica." Universidade de São Paulo, 2012. http://www.teses.usp.br/teses/disponiveis/21/21136/tde-10122012-160544/.

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A sismoestratigrafia, em geral, não é utilizada em estudos de curto espaço de tempo geológico, como os de quinta e sexta ordem. Entretanto, o estudo da Baía do Araçá, no Canal de São Sebastião, no litoral norte do estado de São Paulo mostrou que este tipo de abordagem é possível para ciclos desta magnitude. Utilizando um sistema de aquisição de dados sísmicos, composto por uma fonte boomer, um pinger e um chirp, foi feito um levantamento da região, que resultou em cerca de 60 km de perfis sísmicos de alta resolução, foi possível reconhecer um conjunto de unidades sísmicas que pode ser entendida no conceito de tratos de sistema. Com a interpretação destes sismogramas, gerou-se um modelo evolutivo para a sedimentação no Araçá tendo sido encontrados tratos de sistemas de mar alto, de mar baixo e transgressivo muito bem definidos. Estes tratos foram relacionados com as curvas de variações eustáticas do Pleistoceno Superior e Holoceno conhecidas, possibilitando a proposição de duas hipóteses distintas: a primeira considerando um período de mar alto no Estágio Isotópico 5e e a segunda com um período de mar alto no Estágio Isotópico 3, em uma posição superior àquela considerada pela maioria dos autores, mas corroborada por outros. Além disso, foram encontradas evidências claras de tectônica Neoquaternária na região.
It is not that common to use the seismic stratigraphy in studies of short geological time as those from fifth and sixth orders. However, the study of Araça\'s Bay, at São Sebastião Channel, at the north coast of São Paulo State, showed that this kind of approach is in fact possible for cycles of this magnitude. Using a seismic setup composed with one boomer seismic source, as well as one pinger and one chirp, a seismic survey was taken in the area, which resulted in about 60 km of seismic profiles of high resolution. Analyzing those seismograms, we propose an evolution model for the sedimentation at Araçá area, and we found records of highstand systems tract, lowstand systems tract and transgressive systems tract very well marked. These tracts were then related to the known sea level change curves for Late Pleistocene and Holocene, allowing a proposition of two distinct hypothesis: the first one considers a highstand period at Isotopic Stage 5e and the second one a highstand period at Isotopic Stage 3, in a higher position than that considered for most authors, but corroborated for some others. Also, it was found clear evidences of Neoquaternary tectonics at the area.

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Caccamise, Dana J. "Sea and land level changes in Hawai'i." Thesis, University of Hawaii at Manoa, 2003. http://hdl.handle.net/10125/7023.

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An overall rise in sea level has been recorded by all Hawaii tide gauges over the last century; however, the rates vary considerably between islands. In particular, the sea level rise rate is higher at Hilo (3.3 mm/yr) on the island of Hawaii at the southeast end of the island chain, than at Honolulu (1.4 mm/yr) on the island of Oahu about 335 Ian to the northwest. This difference has been attributed to island subsidence associated with active volcanism at the southeast end of the Hawaiian ridge. Continuous GPS measurements collected over the past 5 years are used to examine the relative vertical movements of the main Hawaiian Islands in an attempt to reconcile the observed difference in sea level rates. The rates of vertical crustal motion are estimated in a reference frame realized using a network of 30 GPS stations spread across the Pacific region. Although absolute vertical motion rates are not yet obtainable, the differential rates of vertical crustal motion are determined to within approximately ± 0.5 mm/yr at the 95% confidence level. The geodetic measurements indicate that vertical velocities within the main Hawaiian Islands are similar. Hilo is subsiding relative to Honolulu, but the difference in rates is only 0.5 mm/yr, considerably less than the 1.9 mm/yr difference suggested by tide gauge observations. Historical hydrographic data suggest that steric sea level trends since 1945 vary considerably along the Hawaiian Ridge, with rates increasing from the northwest to the southeast. It is suggested that the difference in Hilo-Honolulu sea level rise rate is due in part to upper ocean thermal variations. The notion that oceanographic effects influence differential rates of sea level rise at Hawaii challenges previous interpretations based solely on variable crustal motion. The absolute rate of vertical crustal motion at Honolulu has been constrained by coral-age data to be less than 0.1 mm/yr since the last interglacial. A reanalysis of the age-depth relationship obtained from submerged Holocene corals recovered from the Hilo drill hole is consistent with an absolute rate of crustal subsidence anywhere between - 2.7 and 0 mm/yr. Given this wide range of velocities, the differential Holocene subsidence rates from coral data do not conflict with our reinterpretation of the tide gauge data.
ix, 63 leaves

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Knorr, Paul Octavius. "The case for high-order, pleistocene sea-level fluctuations in Southwest Florida." [Tampa, Fla] : University of South Florida, 2006. http://purl.fcla.edu/usf/dc/et/SFE0001791.

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Botella, Albéric. "Past and Future Sea-Level Changes in French Polynesia." Thesis, Université d'Ottawa / University of Ottawa, 2015. http://hdl.handle.net/10393/33392.

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Among the various adverse effects of climate change, sea-level rise is expected to increase the severity and frequency of flooding events impacting the vulnerable, low-lying islands of French Polynesia. It has long been understood that sea-level changes are not spatially uniform, yet this aspect is not taken into account in the decision-making. Notably, no projections of future sea level have been produced specifically for this region so far, partly because the processes driving sea-level changes remain poorly constrained. To approach the issue, we present a detailed reconstruction of sea-level changes for the mid-to-late Holocene, based on the observation of coral proxies. This dataset is then used to calibrate a sea-level model in order to estimate the contribution of glacial isostatic adjustment to regional sea-level changes and to infer past variations in global ice volume. Building upon this baseline and exploiting recent outputs of climate models, we project that in a “worst-case” scenario, sea level would rise 1.05 meters by 2100 in French Polynesia, exceeding the value adopted in the French adaptation strategy by 0.45 meters. We conclude that spatial variability of sea-level rise should be considered in future risk studies for this and other regions.

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Книги з теми "Pleistocene sea level changes"

Survey, United States Geological. Conference on Continental Margin Mass Wasting and Pleistocene Sea-Level Changes, August 13-15, 1980. S.l: s.n, 1986.

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Avian community, climate, and sea-level changes in the Plio-Pleistocene of the Florida peninsula. Washington, DC: American Ornithologists' Union, 1998.

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Conference on Continental Margin Mass-wasting and Pleistocene Sea-level Changes (1980 Woods Hole, Mass.). Conference on Continental Margin Mass-wasting and Pleistocene Sea-level Changes, August 13-15, 1980. Washington, D.C: U.S. G.P.O., 1987.

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Tushingham, A. Mark. A global model of late Pleistocene deglaciation: Implications for earth structure and sea level change. Ottawa: National Library of Canada, 1990.

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J, Tooley M., and Shennan Ian, eds. Sea-level changes. Oxford, UK: B. Blackwell, 1987.

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Phanerozoic sea-level changes. New York: Columbia University Press, 1992.

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Woodworth, P. L., D. T. Pugh, J. G. DeRonde, R. G. Warrick, and J. Hannah, eds. Sea Level Changes: Determination and Effects. Washington, D. C.: American Geophysical Union, 1992. http://dx.doi.org/10.1029/gm069.

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Pirazzoli, Paolo Antonio. World atlas of Holocene sea-level changes. London: Elsevier, 1991.

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Sea-level changes: The last 20,000 years. Chichester: Wiley, 1996.

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Частини книг з теми "Pleistocene sea level changes"

Nakada, M., and K. Lambeck. "Late Pleistocene and Holocene Sea-Level Change; Evidence for Lateral Mantle Viscosity Structure?" In Glacial Isostasy, Sea-Level and Mantle Rheology, 79–94. Dordrecht: Springer Netherlands, 1991. http://dx.doi.org/10.1007/978-94-011-3374-6_5.

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Al-Helal, Anwar, Yaqoub AlRefai, Abdullah AlKandari, and Mohammad Abdullah. "Subsurface Stratigraphy of Kuwait." In The Geology of Kuwait, 27–50. Cham: Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-031-16727-0_2.

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AbstractThis chapter reviews the subsurface stratigraphy of Kuwait targeting geosciences educators. The lithostratigraphy and chronostratigraphy of the reviewed formations (association of rocks whose components are paragenetically related to each other, both vertically and laterally) followed the formal stratigraphic nomenclature in Kuwait. The exposed stratigraphic formations of the Miocene–Pleistocene epochs represented by the Dibdibba, Lower Fars, and Ghar clastic sediments (Kuwait Group) were reviewed in the previous chapter as part of near-surface geology. In this chapter, the description of these formations is based mainly on their subsurface presence. The description of the subsurface stratigraphic formations in Kuwait followed published academic papers and technical reports related to Kuwait’s geology or analog (GCC countries, Iraq and Iran) either from the oil and gas industry or from different research institutions in Kuwait and abroad. It is also true that studies related to groundwater aquifer systems also contribute to our understanding of the subsurface stratigraphy of Kuwait for the shallower formations. The majority of the published data were covered the onshore section of Kuwait. The subsurface stratigraphic nomenclature description is based on thickness, depositional environment, sequence stratigraphy, the nature of the sequence boundaries, biostratigraphy, and age. The sedimentary strata reflect the depositional environment in which the rocks were formed. Understanding the characteristics of the sedimentary rocks will help understand many geologic events in the past, such as sea-level fluctuation, global climatic changes, tectonic processes, geochemical cycles, and more, depending on the research question. The succession of changing lithological sequences is controlled by three main factors; sea-level change (eustatic sea level), sediment supply, and accommodation space controlled by regional and local tectonics influences. Several authors have developed theoretical methods, established conceptual models, and produced several paleofacies maps to interpret Kuwait’s stratigraphic sequence based on the data collected over time intervals from the Late Permian to Quaternary to reconstruct the depositional history of the Arabian Plate in general and of Kuwait to understand the characteristics of oil and gas reservoirs.

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Pugh, David T., and Yasser Abualnaja. "Sea-Level Changes." In The Red Sea, 317–28. Berlin, Heidelberg: Springer Berlin Heidelberg, 2015. http://dx.doi.org/10.1007/978-3-662-45201-1_18.

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Sabadini, Roberto, and Bert Vermeersen. "Sea-Level Changes." In Global Dynamics of the Earth, 189–226. Dordrecht: Springer Netherlands, 2004. http://dx.doi.org/10.1007/978-94-017-1709-0_6.

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Sabadini, Roberto, Bert Vermeersen, and Gabriele Cambiotti. "Sea-Level Changes." In Global Dynamics of the Earth: Applications of Viscoelastic Relaxation Theory to Solid-Earth and Planetary Geophysics, 225–56. Dordrecht: Springer Netherlands, 2016. http://dx.doi.org/10.1007/978-94-017-7552-6_6.

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Gornitz, Vivien. "Monitoring Sea Level Changes." In Long-Term Climate Monitoring by the Global Climate Observing System, 385–414. Dordrecht: Springer Netherlands, 1996. http://dx.doi.org/10.1007/978-94-011-0323-7_20.

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Kidson, C. "Sea-level changes in the Holocene." In Sea-Level Research, 27–64. Dordrecht: Springer Netherlands, 1986. http://dx.doi.org/10.1007/978-94-009-4215-8_2.

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Li, Qianyu, Guangfa Zhong, and Jun Tian. "Stratigraphy and Sea Level Changes." In The South China Sea, 75–170. Dordrecht: Springer Netherlands, 2009. http://dx.doi.org/10.1007/978-1-4020-9745-4_3.

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Krivinogov, Sergey. "Changes of the Aral Sea Level." In The Aral Sea, 77–108. Berlin, Heidelberg: Springer Berlin Heidelberg, 2013. http://dx.doi.org/10.1007/978-3-642-02356-9_4.

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Pillans, B. "Quaternary Sea-level Changes: Southern Hemisphere Data." In Sea Surface Studies, 264–93. Dordrecht: Springer Netherlands, 1987. http://dx.doi.org/10.1007/978-94-015-1146-9_10.

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Тези доповідей конференцій з теми "Pleistocene sea level changes"

Tkach, Nikolai, Valentin Sorokin, and Radik Makshaev. "THE CASPIAN SEA LEVEL CHANGES DURING THE SECOND PART OF THE LATE PLEISTOCENE." In GSA Connects 2021 in Portland, Oregon. Geological Society of America, 2021. http://dx.doi.org/10.1130/abs/2021am-370289.

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Syazwani, N., B. J. Pierson, and A. W. Hunter. "Diagenetic Responses to Sea Level Changes on Pleistocene-Holocene Carbonates in the Celebes Sea, East Sabah, Malaysia." In 75th EAGE Conference and Exhibition incorporating SPE EUROPEC 2013. Netherlands: EAGE Publications BV, 2013. http://dx.doi.org/10.3997/2214-4609.20130688.

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Cressman, Amy W., David J. Mallinson, Stephen J. Culver, Regina DeWitt, and Eduardo Leorri. "DEFINING THE RESPONSE OF A LOW GRADIENT COASTAL SYSTEM TO RAPID SEA-LEVEL CHANGE DURING THE LATE PLEISTOCENE." In 68th Annual GSA Southeastern Section Meeting - 2019. Geological Society of America, 2019. http://dx.doi.org/10.1130/abs/2019se-326972.

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Chutcharavan, Peter McNeil, Andrea Dutton, and Jody Webster. "ROBUST MILLENNIAL- AND CENTENNIAL-SCALE INTERPRETATIONS OF LATE PLEISTOCENE SEA-LEVEL CHANGE FROM FOSSIL CORAL REEFS: AN INTERDISCIPLINARY CHALLENGE." In GSA 2020 Connects Online. Geological Society of America, 2020. http://dx.doi.org/10.1130/abs/2020am-359030.

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Mallinson, David J., Stephen J. Culver, Regina DeWitt, Amy W. Cressman, Erik Gudmunson, Kelli Snyder, and David Mallinson. "UNDERSTANDING THE COASTAL RESPONSE TO LATE PLEISTOCENE SEA-LEVEL CHANGE IN NORTH CAROLINA, USA: AN ANALOG FOR FUTURE COASTAL EVOLUTION." In Joint 69th Annual Southeastern / 55th Annual Northeastern GSA Section Meeting - 2020. Geological Society of America, 2020. http://dx.doi.org/10.1130/abs/2020se-345047.

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Cooper, Adam T., Adrienne Oakley, Adrienne Oakley, Christopher Bochicchio, Christopher Bochicchio, Sean Cornell, Sean Cornell, et al. "EVALUATION OF LATE PLEISTOCENE TO HOLOCENE SEDIMENTATION IN GREENBACKVILLE, CHINCOTEAGUE BAY, VA: IMPLICATIONS FOR SEA LEVEL CHANGE AND BARRIER ISLAND EVOLUTION." In GSA Annual Meeting in Denver, Colorado, USA - 2016. Geological Society of America, 2016. http://dx.doi.org/10.1130/abs/2016am-286810.

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Brazo, Julia, Joseph Licciardi, and Alia J. Lesnek. "USING ¹⁰BE SURFACE EXPOSURE DATING TO RECONSTRUCT THE LATE PLEISTOCENE HISTORY OF ICE SHEET RETREAT AND RELATIVE SEA-LEVEL CHANGES IN THE SEACOAST REGION OF NEW HAMPSHIRE." In Northeastern Section - 57th Annual Meeting - 2022. Geological Society of America, 2022. http://dx.doi.org/10.1130/abs/2022ne-375012.

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Dumitru, Oana-Alexandra, Jacqueline Austermann, Victor J. Polyak, Joan J. Fornós, Yemane Asmerom, Joaquín Ginés, Angel Ginés, and Bogdan P. Onac. "PLIOCENE-PLEISTOCENE SPELEOTHEM-BASED SEA LEVEL SNAPSHOTS FROM THE WESTERN MEDITERRANEAN." In GSA 2020 Connects Online. Geological Society of America, 2020. http://dx.doi.org/10.1130/abs/2020am-355792.

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Goldsmith, Victor, and Michal Gilboa. "Mediterranean Sea Level Changes from Tidal Records." In 20th International Conference on Coastal Engineering. New York, NY: American Society of Civil Engineers, 1987. http://dx.doi.org/10.1061/9780872626003.017.

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Hernández González, Paola N., Hernan Santos-Mercado, and Wilson Ramirez. "PLIO-PLEISTOCENE SEA-LEVEL CURVE OF THE DUVERGÉ PROVINC IN THE DOMINICAN REPUBLIC." In Joint 53rd Annual South-Central/53rd North-Central/71st Rocky Mtn GSA Section Meeting - 2019. Geological Society of America, 2019. http://dx.doi.org/10.1130/abs/2019sc-326751.

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Звіти організацій з теми "Pleistocene sea level changes"

Tweet, Justin S., Vincent L. Santucci, Kenneth Convery, Jonathan Hoffman, and Laura Kirn. Channel Islands National Park: Paleontological resource inventory (public version). National Park Service, September 2020. http://dx.doi.org/10.36967/nrr-2278664.

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Channel Island National Park (CHIS), incorporating five islands off the coast of southern California (Anacapa Island, San Miguel Island, Santa Barbara Island, Santa Cruz Island, and Santa Rosa Island), has an outstanding paleontological record. The park has significant fossils dating from the Late Cretaceous to the Holocene, representing organisms of the sea, the land, and the air. Highlights include: the famous pygmy mammoths that inhabited the conjoined northern islands during the late Pleistocene; the best fossil avifauna of any National Park Service (NPS) unit; intertwined paleontological and cultural records extending into the latest Pleistocene, including Arlington Man, the oldest well-dated human known from North America; calichified “fossil forests”; records of Miocene desmostylians and sirenians, unusual sea mammals; abundant Pleistocene mollusks illustrating changes in sea level and ocean temperature; one of the most thoroughly studied records of microfossils in the NPS; and type specimens for 23 fossil taxa. Paleontological research on the islands of CHIS began in the second half of the 19th century. The first discovery of a mammoth specimen was reported in 1873. Research can be divided into four periods: 1) the few early reports from the 19th century; 2) a sustained burst of activity in the 1920s and 1930s; 3) a second burst from the 1950s into the 1970s; and 4) the modern period of activity, symbolically opened with the 1994 discovery of a nearly complete pygmy mammoth skeleton on Santa Rosa Island. The work associated with this paleontological resource inventory may be considered the beginning of a fifth period. Fossils were specifically mentioned in the 1938 proclamation establishing what was then Channel Islands National Monument, making CHIS one of 18 NPS areas for which paleontological resources are referenced in the enabling legislation. Each of the five islands of CHIS has distinct paleontological and geological records, each has some kind of fossil resources, and almost all of the sedimentary formations on the islands are fossiliferous within CHIS. Anacapa Island and Santa Barbara Island, the two smallest islands, are primarily composed of Miocene volcanic rocks interfingered with small quantities of sedimentary rock and covered with a veneer of Quaternary sediments. Santa Barbara stands apart from Anacapa because it was never part of Santarosae, the landmass that existed at times in the Pleistocene when sea level was low enough that the four northern islands were connected. San Miguel Island, Santa Cruz Island, and Santa Rosa Island have more complex geologic histories. Of these three islands, San Miguel Island has relatively simple geologic structure and few formations. Santa Cruz Island has the most varied geology of the islands, as well as the longest rock record exposed at the surface, beginning with Jurassic metamorphic and intrusive igneous rocks. The Channel Islands have been uplifted and faulted in a complex 20-million-year-long geologic episode tied to the collision of the North American and Pacific Places, the initiation of the San Andreas fault system, and the 90° clockwise rotation of the Transverse Ranges, of which the northern Channel Islands are the westernmost part. Widespread volcanic activity from about 19 to 14 million years ago is evidenced by the igneous rocks found on each island.

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Muller, R. A., and D. E. Morris. GEOMAGNETIC REVERSALS DRIVEN BY ABRUPT SEA LEVEL CHANGES. Office of Scientific and Technical Information (OSTI), October 1986. http://dx.doi.org/10.2172/1004148.

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Sanchez, T. M., J. L. Benedetto, and E. Brussa. Late Ordovician Stratigraphy, Paleoecology, and Sea Level Changes in the Argentine Precordillera. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 1991. http://dx.doi.org/10.4095/132193.

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Calafat, Franciso Mir, Thomas Frederikse, Kevin Horsburgh, and Nadim Dayoub. Mediterranean sea-level reconstruction spanning 1960-2018. EuroSea, 2021. http://dx.doi.org/10.3289/eurosea_d5.2.

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We have used spatiotemporal Bayesian methods to produce statistically rigorous estimates of sea-level trends in the Mediterranean Sea since 1960 by combining tide gauge and satellite altimetry data. Furthermore, we have also quantified the contributions from sterodynamic sea-level change, land-mass changes and glacial isostatic adjustment to the trends.

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Hosenhans, H., D. Fedje, and D. Frobel. Sea-level changes and early humans in the Queen Charlotte Islands and Hecate Strait. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 1996. http://dx.doi.org/10.4095/208291.

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Otto-Bliesner, Bette, William Lipscomb, Shawn Marshall, William Sacks, Jeremy Fyke, Marcus Lofverstrom, Aleah Sommers, Samira Samimi, and Zahra Rahimian. Modeling Long-Term Changes in Climate, Ice Sheets and Sea Level: Using the Paleo Record to Understand Possibilities for the Future. Office of Scientific and Technical Information (OSTI), August 2014. http://dx.doi.org/10.2172/1714361.

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Dunbar, Joseph. Legacy datums and changes in benchmark elevation through time at the Low Sill and Overbank Structures, Louisiana. Engineer Research and Development Center (U.S.), August 2022. http://dx.doi.org/10.21079/11681/45261.

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Vertical datums used in the study area at the Low Sill and Overbank Structures in southern Louisiana have involved Memphis Datum, Mean Gulf Level, Mean Sea Level, Mean Sea Level Datum of 1929, National Geodetic Vertical Datum of 1929, and the North American Vertical Datum of 1988. The focus of this study was to examine historic benchmarks in the study area to determine the magnitude of elevation changes associated with the different legacy datums that have been used by the US Army Corps of Engineers. Comparison of elevation values across these legacy datums has involved examining historic hydrographic surveys, compiling a list of known benchmarks from these surveys, and comparing their elevation values against publications involving spirit-leveling surveys from the Lower Mississippi Valley and the National Geodetic Survey database for benchmarks. This study describes the history of legacy datums, floodplain geology, potential subsidence impacts affecting the benchmarks, methods for identification and tracking benchmarks, and the results obtained from this study.

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Gregow, Hilppa, Antti Mäkelä, Heikki Tuomenvirta, Sirkku Juhola, Janina Käyhkö, Adriaan Perrels, Eeva Kuntsi-Reunanen, et al. Ilmastonmuutokseen sopeutumisen ohjauskeinot, kustannukset ja alueelliset ulottuvuudet. Suomen ilmastopaneeli, 2021. http://dx.doi.org/10.31885/9789527457047.

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The new EU strategy on adaptation to climate change highlights the urgency of adaptation measures while bringing forth adaptation as vitally important as a response to climate change as mitigation. In order to provide information on how adaptation to climate change has been promoted in Finland and what calls for attention next, we have compiled a comprehensive information package focusing on the following themes: adaptation policy, impacts of climate change including economic impacts, regional adaptation strategies, climate and flood risks in regions and sea areas, and the availability of scientific data. This report consists of two parts. Part 1 of the report examines the work carried out on adaptation in Finland and internationally since 2005, emphasising the directions and priorities of recent research results. The possibilities of adaptation governance are examined through examples, such as how adaptations steering is organised in of the United Kingdom. We also examine other examples and describe the Canadian Climate Change Adaptation Platform (CCAP) model. We apply current information to describe the economic impacts of climate change and highlight the related needs for further information. With regard to regional climate strategy work, we examine the status of adaptation plans by region and the status of the Sámi in national adaptation work. In part 2 of the report, we have collected information on the temporal and local impacts of climate change and compiled extensive tables on changes in weather, climate and marine factors for each of Finland's current regions, the autonomous Åland Islands and five sea areas, the eastern Gulf of Finland, the western Gulf of Finland, the Archipelago Sea, the Bothnian Sea and the Bay of Bothnia. As regards changes in weather and climate factors, the changes already observed in 1991-2020 are examined compared to 1981-2010 and future changes until 2050 are described. For weather and climate factors, we examine average temperature, precipitation, thermal season duration, highest and lowest temperatures per day, the number of frost days, the depth and prevalence of snow, the intensity of heavy rainfall, relative humidity, wind speed, and the amount of frost per season (winter, spring, summer, autumn). Flood risks, i.e. water system floods, run-off water floods and sea water floods, are discussed from the perspective of catchment areas by region. The impacts of floods on the sea in terms of pollution are also assessed by sea area, especially for coastal areas. With regard to marine change factors, we examine surface temperature, salinity, medium water level, sea flood risk, waves, and sea ice. We also describe combined risks towards sea areas. With this report, we demonstrate what is known about climate change adaptation, what is not, and what calls for particular attention. The results can be utilised to strengthen Finland's climate policy so that the implementation of climate change adaptation is strengthened alongside climate change mitigation efforts. In practice, the report serves the reform of the National Climate Change Adaptation Plan and the development of steering measures for adaptation to climate change both nationally and regionally. Due to its scale, the report also serves e.g. the United Nations’ aim of protecting marine life in the Baltic Sea and the national implementation of the EU strategy for adaptation to climate change. As a whole, the implementation of adaptation policy in Finland must be speeded up swiftly in order to achieve the objectives set and ensure sufficient progress in adaptation in different sectors. The development of binding regulation and the systematic evaluation, monitoring and support of voluntary measures play a key role.

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McMartin, I., M. S. Gauthier, and A. V. Page. Updated post-glacial marine limits along western Hudson Bay, central mainland Nunavut and northern Manitoba. Natural Resources Canada/CMSS/Information Management, 2022. http://dx.doi.org/10.4095/330940.

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A digital compilation of updated postglacial marine limits was completed in the coastal regions of central mainland Nunavut and northern Manitoba between Churchill and Queen Maud Gulf. The compilation builds on and updates previous mapping of the marine limits at an unprecedented scale, making use of high-resolution digital elevation models, new field-based observations of the marine limit and digital compilations of supporting datasets (i.e. marine deltas and marine sediments). The updated mapping also permits a first-hand, knowledgedriven interpolation of a continuous limit of marine inundation linking the Tyrrell Sea to Arctic Ocean seawaters. The publication includes a detailed description of the mapping methods, a preliminary interpretation of the results, and a GIS scalable layout map for easy access to the various layers. These datasets and outputs provide robust constraints to reconstruct the patterns of ice retreat and for glacio-isostatic rebound models, important for the estimation of relative sea level changes and impacts on the construction of nearshore sea-transport infrastructures. They can also be used to evaluate the maximum extent of marine sediments and associated permafrost conditions that can affect land-based infrastructures, and potential secondary processes related to marine action in the surficial environment and, therefore, can enhance the interpretation of geochemical anomalies in glacial drift exploration methods. A generalized map of the maximum limit of postglacial marine inundation produced for map representation and readability also constitutes an accessible output relevant to Northerners and other users of geoscience data.

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Solaun, Kepa, Chiquita Resomardono, Katharina Hess, Helena Antich, Gerard Alleng, and Adrián Flores. State of the Climate Report: Suriname: Summary for Policy Makers. Inter-American Development Bank, July 2021. http://dx.doi.org/10.18235/0003415.

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Several factors contribute to Surinames particular vulnerability to the effects of climate change. It is dependent on fossil fuels, has forests liable to decay, fragile ecosystems, and its low-lying coastal area accounts for 87% of the population and most of the countrys economic activity. Many sectors are at risk of suffering losses and damage caused by gradual changes and extreme events related to climate change. For Suriname to develop sustainably, it should incorporate climate change and its effects into its decision-making process based on scientific- evidence. The State of the Climate Report analyzes Surinames historical climate (1990-2014) and provides climate projections for three time horizons (2020-2044, 2045-2069, 2070-2094) through two emissions scenarios (intermediate/ SSP2-4.5 and severe/ SSP5-8.5). The analysis focuses on changes in sea level, temperature, precipitation, relative humidity, and winds for the seven subnational locations of Paramaribo, Albina, Bigi Pan MUMA, Brokopondo, Kwamalasamutu, Tafelberg Natural Reserve, and Upper Tapanahony. The Report also analyzes climate risk for the countrys ten districts by examining the factors which increase their exposure and vulnerability on the four most important sectors affected by climate change: infrastructure, agriculture, water, and forestry, as well as examining the effects across the sectors. The State of the Climate provides essential inputs for Suriname to develop and update its climate change policies and targets. These policies and targets should serve as enablers for an adequate mainstreaming of climate change adaptation and resilience enhancement into day-to-day government operations.

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