Relevant bibliographies by topics / McMurdo Sound

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  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers

Academic literature on the topic 'McMurdo Sound'

Author: Grafiati
Published: 4 June 2021
Last updated: 19 February 2022

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Journal articles on the topic "McMurdo Sound"

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Parker, S. J., S. Mormede, S. M. Hanchet, A. Devries, S. Canese, and L. Ghigliotti. "Monitoring Antarctic toothfish in McMurdo Sound to evaluate the Ross Sea region Marine Protected Area." Antarctic Science 31, no. 4 (June 14, 2019): 195–207. http://dx.doi.org/10.1017/s0954102019000245.

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AbstractWe developed a random, stratified, vertical longline survey in McMurdo Sound, Antarctica, to compare the local age and size composition, diet and reproductive status of Antarctic toothfish (Dissostichus mawsoni) with those observed from a vessel-based survey of the southern Ross Sea shelf that includes a McMurdo Sound stratum. Results indicated that southern McMurdo Sound toothfish were larger and older than those a short distance away in northern McMurdo Sound. These data, in addition to recoveries of tagged fish, suggest that the large toothfish in McMurdo Sound may have limited mixing with the rest of the population. The potential effects of climate change and fishing in northern areas on toothfish abundance in McMurdo Sound will depend on the mechanism of toothfish recruitment to McMurdo Sound. Understanding the ecological relationships between McMurdo Sound toothfish and the larger population is required to predict these impacts. Furthermore, because toothfish predators (type C killer whalesOrcinus orca, Weddell sealsLeptonychotes weddellii) are abundant in the south-west margins of the Ross Sea, it is important to monitor toothfish in McMurdo Sound as part of the monitoring programme for the Ross Sea region Marine Protected Area.
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Cheng, Chen, Adrian Jenkins, Paul R. Holland, Zhaomin Wang, Chengyan Liu, and Ruibin Xia. "Responses of sub-ice platelet layer thickening rate and frazil-ice concentration to variations in ice-shelf water supercooling in McMurdo Sound, Antarctica." Cryosphere 13, no. 1 (January 29, 2019): 265–80. http://dx.doi.org/10.5194/tc-13-265-2019.

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Abstract. Persistent outflow of supercooled ice-shelf water (ISW) from beneath McMurdo Ice Shelf creates a rapidly growing sub-ice platelet layer (SIPL) with a unique crystallographic structure under the sea ice in McMurdo Sound, Antarctica. A vertically modified frazil-ice-laden ISW plume model that encapsulates the combined non-linear effects of the vertical distributions of supercooling and frazil concentration on frazil-ice growth is applied to McMurdo Sound and is shown to reproduce the observed ISW supercooling and SIPL distributions. Using this model, the dependence of the SIPL thickening rate and depth-averaged frazil-ice concentration on ISW supercooling in McMurdo Sound is investigated and found to be predominantly controlled by the vertical distribution of frazil concentration. The complex dependence on frazil concentration highlights the need to improve frazil-ice observations within the sea-ice–ocean boundary layer in McMurdo Sound.
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Parker, Steven J., Sophie Mormede, Arthur L. Devries, Stuart M. Hanchet, and Regina Eisert. "Have Antarctic toothfish returned to McMurdo Sound?" Antarctic Science 28, no. 1 (September 28, 2015): 29–34. http://dx.doi.org/10.1017/s0954102015000450.

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AbstractA dramatic reduction in catch rates of Antarctic toothfish in McMurdo Sound, Antarctica, has led to conclusions that the commercial bottom longline fishery for toothfish in the Ross Sea has drastically altered the toothfish population with cascading effects on the McMurdo Sound ecosystem. However, results from a new monitoring programme for Antarctic toothfish and other top predators carried out in McMurdo Sound in 2014 have shown toothfish catch rate, fish size and fish age similar to those observed prior to 2002. These results suggest that either large and old fish have returned to McMurdo Sound following a temporary environmentally driven absence or that they remained locally present but were not detected in the areas sampled. These findings highlight the importance of continued standardized monitoring for detecting the potential effects of fishing on the Ross Sea ecosystem.
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Christ, Andrew J., and Paul R. Bierman. "The local Last Glacial Maximum in McMurdo Sound, Antarctica: Implications for ice-sheet behavior in the Ross Sea Embayment." GSA Bulletin 132, no. 1-2 (May 2, 2019): 31–47. http://dx.doi.org/10.1130/b35139.1.

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AbstractDuring the Last Glacial Maximum (LGM), a grounded ice sheet filled the Ross Sea Embayment in Antarctica and deposited glacial sediments on volcanic islands and peninsulas in McMurdo Sound and coastal regions of the Transantarctic Mountains. The flow geometry and retreat history of this ice are debated, with contrasting views yielding divergent implications for the interaction between and stability of the East and West Antarctic ice sheets during late Quaternary time. Here, we present terrestrial geomorphologic evidence and reconstruct former ice-marginal environments, ice sheet elevations, and ice-flow directions in McMurdo Sound. Fossil algae in ice-marginal sediments provide a coherent radiocarbon chronology of maximum ice extent and deglaciation. We integrate these data with marine records to reconstruct grounded ice dynamics in McMurdo Sound and the western Ross Sea. The combined data set suggests ice flow toward the Transantarctic Mountains in McMurdo Sound during peak glaciation, with thick, grounded ice at or near its maximum position between 19.6 and 12.3 ka. Persistent grounded ice in McMurdo Sound and across the western Ross Sea after Meltwater Pulse 1a (14.0–14.5 ka) suggests that this sector of Antarctica did not significantly contribute to this rapid sea-level rise event. Our data show no significant advance of locally derived ice from the Transantarctic Mountains into McMurdo Sound during the local LGM.
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Dunbar, Robert B., Amy R. Leventer, and William L. Stockton. "Biogenic sedimentation in McMurdo Sound, Antarctica." Marine Geology 85, no. 2-4 (January 1989): 155–79. http://dx.doi.org/10.1016/0025-3227(89)90152-7.

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Leventer, Amy, and Robert B. Dunbar. "Diatom flux in McMurdo Sound, Antarctica." Marine Micropaleontology 12 (January 1987): 49–64. http://dx.doi.org/10.1016/0377-8398(87)90013-2.

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Talalay, Pavel G., and Alex R. Pyne. "Geological drilling in McMurdo Dry Valleys and McMurdo Sound, Antarctica: Historical development." Cold Regions Science and Technology 141 (September 2017): 131–62. http://dx.doi.org/10.1016/j.coldregions.2017.06.007.

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Gough, Alexander J., Andrew R. Mahoney, Pat J. Langhorne, Michael J. M. Williams, Natalie J. Robinson, and Tim G. Haskell. "Signatures of supercooling: McMurdo Sound platelet ice." Journal of Glaciology 58, no. 207 (2012): 38–50. http://dx.doi.org/10.3189/2012jog10j218.

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AbstractNear ice shelves around Antarctica the ocean becomes supercooled and has been observed to carry small suspended ice crystals. Our measurements demonstrate that these small crystals are persistently present in the water column beneath the winter fast ice, and when incorporated in sea ice they reduce the mean grain size of the sea-ice cover. By midwinter, larger ice crystals below the ice/water interface are observed to form a porous sub-ice platelet layer with an ice volume fraction of 0.25 ± 0.06. The magnitude and direction of the oceanic heat flux varied between (5 ± 6) Wm-2 (upwards) and (-15 ± 10) Wm-2 (downwards) in May, but by September it settled between (-6 ± 2) and (-11 ± 2) W m-2. The negative values imply that the ocean acts as a heat sink which is responsible for the growth of 12% of the ice thickness between June and September. This oceanic contribution should not be ignored in models of Antarctic sea-ice thickness close to an ice shelf.
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Harris, Colin M. "Protected areas review: McMurdo Sound, Ross Sea." Polar Record 30, no. 174 (July 1994): 189–92. http://dx.doi.org/10.1017/s0032247400024244.

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AbstractAs a result of new provisions in the Protocol on Environmental Protection to the Antarctic Treaty a number of countries are reviewing the management plans for protected areas in Antarctica. The United States and New Zealand have initiated a review of the 15 existing sites in the Ross Sea region, using an independent party, the International Centre for Antarctic Information and Research, to facilitate and coordinate the process. Management provisions are being revised to comply with the Protocol, and improved maps for the sites are being prepared using Geographical Information Systems. Visits in 1993/94 gathered field information, and thus far two sites have had new plans drafted: these are proceeding through the international review process. Input and comment is invited from interested parties with experience in these areas.
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Wells, Rufus M. G. "Respiration of Antarctic fish from McMurdo Sound." Comparative Biochemistry and Physiology Part A: Physiology 88, no. 3 (January 1987): 417–24. http://dx.doi.org/10.1016/0300-9629(87)90056-9.

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Dissertations / Theses on the topic "McMurdo Sound"

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Hay, Timothy Deane. "MAX-DOAS measurements of bromine explosion events in McMurdo Sound, Antarctica." Thesis, University of Canterbury. Physics and Astronomy, 2010. http://hdl.handle.net/10092/5394.

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Reactive halogen species (RHS) are responsible for ozone depletion and oxidation of gaseous elemental mercury and dimethyl sulphide in the polar boundary layer, but the sources and mechanisms controlling their catalytic reaction cycles are still not completely understood. To further investigate these processes, ground– based Multi–Axis Differential Optical Absorption Spectroscopy (MAX-DOAS) observations of boundary layer BrO and IO were made from a portable instrument platform in McMurdo Sound during the Antarctic spring of 2006 and 2007. Measurements of surface ozone, temperature, pressure, humidity, and wind speed and direction were also made, along with fourteen tethersonde soundings and the collection of snow samples for mercury analysis. A spherical multiple scattering Monte Carlo radiative transfer model (RTM) was developed for the simulation of box-air-mass-factors (box-AMFs), which are used to determine the weighting functions and forward model differential slant column densities (DSCDs) required for optimal estimation. The RTM employed the backward adjoint simulation technique for the fast calculation of box-AMFs for specific solar zenith angles (SZA) and MAX-DOAS measurement geometries. Rayleigh and Henyey-Greenstein scattering, ground topography and reflection, refraction, and molecular absorption by multiple species were included. Radiance and box-AMF simulations for MAX-DOAS measurements were compared with nine other RTMs and showed good agreement. A maximum a posteriori (MAP) optimal estimation algorithm was developed to retrieve trace gas concentration profiles from the DSCDs derived from the DOAS analysis of the measured absorption spectra. The retrieval algorithm was validated by performing an inversion of artificial DSCDs, simulated from known NO2 profiles. Profiles with a maximum concentration near the ground were generally well reproduced, but the retrieval of elevated layers was less accurate. Retrieved partial vertical column densities (VCDs) were similar to the known values, and investigation of the averaging kernels indicated that these were the most reliable retrieval product. NO₂ profiles were also retrieved from measurements made at an NO₂ measurement and profiling intercomparison campaign in Cabauw, Netherlands in July 2009. Boundary layer BrO was observed on several days throughout both measurement periods in McMurdo Sound, with a maximum retrieved surface mixing ratio of 14.4±0.3 ppt. The median partial VCDs up to 3km were 9.7±0.07 x 10¹² molec cm ⁻ in 2007, with a maximum of 2.3±0.07 x 10¹³ molec cm⁻², and 7.4±0.06 x 10¹² molec cm⁻² in 2006, with a maximum of 1.05 ± 0.07 x 1013 molec cm⁻². The median mixing ratio of 7.5±0.5 ppt for 2007 was significantly higher than the median of 5.2±0.5 ppt observed in 2006, which may be related to the more extensive first year sea ice in 2007. These values are consistent with, though lower than estimated boundary layer BrO concentrations at other polar coastal sites. Four out of five observed partial ozone depletion events (ODEs) occurred during strong winds and blowing snow, while BrO was present in the boundary layer in both stormy and calm conditions, consistent with the activation of RHS in these two weather extremes. Air mass back trajectories, modelled using the Hybrid Single-Particle Lagrangian Integrated Trajectory (HYSPLIT) model, indicated that the events were locally produced rather than transported from other sea ice zones. Boundary layer IO mixing ratios of 0.5–2.5±0.2 ppt were observed on several days. These values are low compared to measurements at Halley and Neumayer Stations, as well as mid-latitudes. Significantly higher total mercury concentrations observed in 2007 may be related to the higher boundary layer BrO concentrations, but further measurements are required to verify this.
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Raimondi, Ellen Lynn. "Biodegradation and idealized modeling of drilling fluids, South McMurdo Sound, Antarctica." Thesis, Northern Illinois University, 2016. http://pqdtopen.proquest.com/#viewpdf?dispub=10008797.

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This project explored the potential fate and transport of seawater-based drilling fluid used in the Antarctic Drilling Program (ANDRILL) South McMurdo Sound project (SMS). The SMS drilling reported a loss of 5.6 × 10 5 liters of drilling fluid to the surrounding formation throughout a borehole depth of 1139m. The introduction of these drilling fluids raise concerns of potential contamination to a pristine, isolated environment. The volume of fluid lost to the subsurface is unrecoverable and will only break down through natural attenuation processes, such as biodegradation. The objectives of this study are to estimate the extent of fluid migration laterally from the borehole and to determine when biodegradation of the water-based drilling fluid is effectively occurring. Variable density groundwater flow modeling (SEAWAT) was used to simulate the environment around the borehole. Applying stresses similar to the drilling events produced an estimate of how far fluid will be transported as drilling fluid is being circulated. Results show the fluid to migrate up to 7.5m into the subsurface. Additionally, laboratory microcosms were set up to incubate drilling fluid samples at various temperatures (5, 25, and 50°C) under aerobic and anaerobic conditions. Experimental data collected over 188 days was analyzed to evaluate the time frame when biodegradation of drilling fluids occurred. Carbon isotope fractionation ( 13C/12C) was used to determine the ability of the drilling fluids to be used as a food source. Biological data observed changes in microbial growth using DNA quantification, and changes in microbial communities using Biolog EcoPlates™. Results show a positive correlation between the increase of δ13C (‰) values and an increase in DNA (ng/µl) quantity. Data from geochemical and community changes indicate biodegradation of the drilling fluid occurred between time 40 and time 100. The methods employed to investigate fate and transport is a unique approach, and applied to these water-based drilling fluids for the first time in this study.

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Adlam, Leah Seree. "Soil climate and permafrost temperature monitoring in the McMurdo Sound region, Antarctica." The University of Waikato, 2009. http://hdl.handle.net/10289/2764.

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A soil climate monitoring network, consisting of seven automated weather stations, was established between 1999 and 2003 in the McMurdo Sound region of Antarctica. Soil temperature, soil water content, air temperature, relative humidity, solar radiation, and wind speed and direction are recorded hourly and downloaded annually. Two 30 m deep permafrost temperature monitoring boreholes were established adjacent to the soil climate stations in the Wright Valley and at Marble Point in January 2007. Sixteen thermistors (accurate to ±0.1°C) were installed in each borehole measuring temperature once every hour and recording the mean every six hours. One year of permafrost temperatures were available (January 2007 to January 2008). The overall aim of this thesis was to make use of the soil climate monitoring database from 1999 to 2007 to investigate Antarctic soil climate. Active layer depth (depth of thawing) varied inter-annually, with no significant trend between 1999 and 2007. The active layer increased with decreasing latitude (R2 = 0.94), and decreased with increasing altitude (R2 = 0.95). A multiple regression model was produced whereby active layer depth was predicted as a function of mean summer air temperature, mean winter air temperature, total summer solar radiation and mean summer wind speed (R2 = 0.73). Annual temperature cycles were observed at all depths in the boreholes. At Marble Point, an annual temperature range of lt;1°C occurred at 15.2 m, lt;0.5°C at 18.4 m and lt;0.1°C at 26.4 m and at Wright Valley, an annual temperature range of lt;1°C occurred at 14.0 m, lt;0.5°C at 17.2 m and lt;0.1°C at 25.2 m. Given that the depth of Zero Annual Amplitude determined depends on the sensitivity of the measurement method, it is suggested that instead of referring to a depth of Zero Annual Amplitude , the depth at which the annual temperature range is less than a given value is a more useful concept. Mean annual and mean seasonal air and soil temperatures varied inter-annually and there was no significant trend of warming or cooling over the 1999 - 2007 period. Mean annual air temperatures were primarily influenced by winter air temperatures. Mean annual and mean summer soil temperatures were warmer than air temperatures due to heating by solar radiation. Mean summer air temperatures correlated well with the Southern Annular Mode Index (SAMI) at all sites (0.61 lt; R2 lt; 0.73) except Victoria Valley; however there was no correlation between mean annual or mean winter temperatures and the SAMI. Air temperature was linearly correlated with near-surface soil temperature (1.3 - 7.5 cm) (R2 gt; 0.79). Near-surface soil temperature was strongly correlated with incoming solar radiation at Victoria Valley (0.14 lt; R2 lt; 0.76) and Granite Harbour (0.49 lt; R2 lt; 0.82), but was not significantly correlated at other sites (0 lt; R2 lt; 0.57). There was no significant correlation between air temperature and wind speed, air temperature and solar radiation and near-surface soil temperature and wind speed, despite occasions of strong correlation on the diurnal time scale. Diurnal summer cycles in air and soil temperatures were driven by solar radiation. Multiple regressions combining the effects of air temperature, solar radiation and wind speed approximated near-surface soil temperatures well at every site during both summer and winter (0.88 lt; R2 lt; 0.98).
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Santos, Claudineia Lizieri dos. "Environmental attributes in assembling cyanobacterial communities from the Mcmurdo Sound region, Antarctica." Universidade Federal de Viçosa, 2014. http://www.locus.ufv.br/handle/123456789/6588.

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A variedade de ecossistemas microbianos que existe na Antártica representa uma oportunidade extraordinária para pesquisas sobre a ecologia, diversidade e evolução microbiana, principamente em termos de cianobactéria. Neste trabalho, foi avaliado o papel de atributos ambientais no controle da montagem de esteiras microbianas antárticas. Inicialmente foi caracterizado a diversidade cianobacteriana das esteiras ao longo de gradientes ambientais na região do McMurdo Sound, Antártica continental. Em seguida, foi avaliado o papel das variáveis ambientais na determinação da composição da assembléia de cianobactérias através da análise de amostras de água e esteiras de cianobactérias microbianas de 25 lagos distribuídos em quatro distintas áreas geográficas: McMurdo Ice Shelf, Ross Island e Upper e Lower Wright Valleys. Finalmente, foi realizado experimentos de laboratório para determinar a extensão com que a composição de espécies afeta a formação das esteiras microbianas. Vinte e nove morfoespécies foram identificadas e descritas no capítulo 1. Quatro foram designadas à ordem Chroococcales, três Nostocales e 22 Oscillatoriales. No segundo capítulo foram investigados os fatores que podem estar envolvidos na determinação da presença e/ou ausência de cianobactérias dentro da comunidade das esteiras microbianas em cada lago amostrado. Os lagos das regiões Ross Island, McMurdo Ice Shelf e Upper e Lower Wright Vallyes apresentaram algumas características específicas próprias de cada área em termos de fatores físico-químicos e diversidade de cianobactérias, embora em vários casos houve uma sobreposição considerável das características. A análise multivariada dos dados, com base em variáveis físico-químicas mostrou que os lagos de cada área amostrada tendeu a se agruparem por local, embora com considerável sobreposição, com os dois Wright Valleys e as duas zonas costeiras tendendo a ser mais semelhantes entre si. Este padrão tendeu a ser reproduzido em análises dos dados de biomassa e composição das espécies, onde foi possível indentificar táxons que foram amplamente espalhados por toda a região e outros que foram mais restritos por área. A importância da dispersão e condições de crescimento na condução desse padrão foi discutida. No terceiro capítulo foi desenvolvido um experimento para avaliar o papel de cepas de cianobactérias isoladas no processo de formação de esteiras microbianas. Seis cepas de cianobactérias foram utilizadas, em combinações variadas, para formar biofilmes em condições de laboratório: CYN-50 (Phormidium cf. autumnale); CYN-68 (Leptolyngbya A); CYN-65 (Leptolyngbya B); CYN-66 (Microcoleus sp.); CYN-67 (cf. Aphanocapsa) e CYN- 72 (Nostoc sp.). O conteúdo de clorofila-a, exopolissacarídeo e matéria orgânica foi avaliado e utilizado como medida de avaliação do desenvolvimento dos biofilmes. No final do experimento, observou-se que os biofilmes desenvolvidos mostraram-se diferentes em termos de sua morfologia e que as cianobactérias filamentosas “oscilatoriales” são requeridas para a formação de biofilme consistente, entretanto, todas as cepas morfologicamente diferentes produziram efeito nas matrizes dos biofilmes. Phormidium produziu o melhor biofilme desenvolvido. Em conclusão, este trabalho fornece um maior conhecimento sobre a taxonomia e ecologia de cianobactérias da Antártica na região do McMurdo Sound. Nós identificamos uma mistura de organismos amplamente distribuídos e tolerantes e outros com distribuições mais locais e requerimentos ambientais específicos. A significância destes em temos de gestão da biodiversidade antártica também foi discutida. *INGLÊS* SANTOS, Claudineia Lizieri dos, D.Sc., Universidade Federal de Viçosa, March of 2014. Environmental attributes in assembling cyanobacterial communities from the Mcmurdo Sound region, Antarctica.
The variety of microbial ecosystems that exist in Antarctica represents an extraordinary opportunity for research on microbial ecology, diversity and evolution, particularly in terms of cyanobacteria. In this work we focus on the role of environment in controlling cyanobacterial mat assembly, and begin by describing the cyanobacterial diversity of mats along environmental gradients in the McMurdo Sound region, continental Antarctica. We then evaluated the role of environmental variables in determining their composition by analysing water and microbial cyanobacterial mat samples from 25 ponds from four distinct geographic sites: McMurdo Ice Shelf, Ross Island and Upper and Lower Wright Valleys. Finally we undertook a series of laboratory experiments to determine the extent to which species composition affects mat formation. Twenty nine morphospecies are identified and described in chapter one. Four were assigned to the order Chroococcales, three to the Nostocales and 22 to the Oscillatoriales. In chapter two, we investigated the factors that appeared to determine the presence or absence of morphospecies within the cyanobacterial mat community at each sampled pond. Ross Island, McMurdo Ice Shelf and Upper and Lower Wright Valleys ponds each showed some specific features in terms of physical-chemical factors and cyanobacteria diversity, though in many cases there was considerable overlap. Multivariate analysis based on physic-chemical variables showed that the ponds from each site tended to cluster by site, though with considerable overlap, and with the two Wright Valley and two coastal sites tending to be more similar to each other. This pattern tended to be reproduced in analysis of biomass and species composition data, and we were able to identify taxa that were broadly spread across the region and others that were more restricted by area. The importance of dispersal and growth conditions in driving this pattern is discussed. In chapter 3 we developed an experiment to evaluate the role of isolated cyanobacteria strains on the mat-building process. Six cyanobacteria strains, in varying combinations, were used to grow mats under laboratory conditions: CYN-50 (Phormidium cf. autumnale); CYN-68 (Leptolyngbya A); CYN-65 (Leptolyngbya B); CYN-66 (Microcoleus sp.); CYN-67 (cf. Aphanocapsa) and CYN-72 (Nostoc sp.). The content of chlorophyll-a, exopolysaccharide and organic matter was evaluated to assess mat development. At the end of our experiment, we observed that the mats developments showed variety in terms of their morphology, that oscillatorean cyanobacteria are required for coherent mat formation, but that different strains all produced effect mat matrices. P. autumnale produced the best developed mats. In conclusion, our findings provide an increased knowledge on the Antarctica cyanobacteria taxonomy and ecology in the McMurdo Sound region. We identified a mix of broadly tolerant, widely distributed organisms and other with more local distributions and specific environmental requirements. The significance of this in terms of management of Antarctic biodiversity is discussed.
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Patterson, Molly O’Rourke. "FORAMINIFERA FAUNA RECOVERED FROM ANDRILL’S (ANtarctica geological DRILLing program) SOUTHERN MCMURDO SOUND (SMS) PROJECT." OpenSIUC, 2010. https://opensiuc.lib.siu.edu/theses/411.

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During the Austral Spring of 2007-2008 the ANtarctic geological DRILLing program (ANDRILL) recovered a 1,138 meter long sediment core AND-2A from the western side of the Victoria Land Basin for the Southern McMurdo Sound Project. The main goal of the project is to help establish a Neogene (~24 to 1.6 Mya) ice volume and climate record of Antarctica. This study focuses on the foraminifera record of AND-2A for paleoenvironmental and biostratigraphic purposes.AND-2A is unique in that it contains a Middle Miocene record (~17 to ~11 Mya) that includes the Middle Miocene transition of warm climatic conditions favoring polythermal ice sheets to major cooling into polar conditions resulting in the quasi-permanent formation of the East Antarctic Ice Sheet. This Middle Miocene transition has not been previously recovered from the Antarctic continental margin.The foraminifer record is not abundant; however, three assemblage zones are identified throughout AND-2A. Calcareous benthic taxa dominate every assemblage, as well as displaying similarities between modern shallow shelf assemblages around Antarctica and assemblages from previous drilling projects in the Ross Sea sector. The foraminifera record displays a dynamic environmental record and is supported by both the sedimentologic and other paleontologic findings.
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Rousseau, Ludivine Blandine. "Reproductive strategies of Weddell seals in McMurdo Sound, Antarctica: relationship among vocalizations, behaviors, and social interactions." Texas A&M University, 2003. http://hdl.handle.net/1969.1/5776.

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Phocid seals (true seals, Order Carnivora, Family Phocidae) use a diverse array of breeding habitats and strategies, and produce many vocalizations. Therefore, phocids are well suited as subjects for study of reproductive strategies and the role of vocalizations in species mating at sea. However, the amount of information is still limited for aquatically breeding pinnipeds. Using underwater audio and video recordings of Weddell seals (Leptonychotes weddellii) interacting in McMurdo Sound, I compared the frequencies of vocalizations and behaviors of males and females during the mating season. I also investigated differences in these frequencies based on the social context. Finally, I identified patterns of vocalizations and behaviors to help determine the behavioral context of calls and used this information as a basis for considering the degree of ritualization in Weddell seal displays. Mews, growls, knocks, and trills were found to be almost exclusively male-specific. The territorial male produced chirps more often when another male was present in its territory; whereas, mews and growls were more frequent when one or more free-ranging females were present. Several vocal and behavioral padeparture of the territorial male into or from the breathing hole. In the context of an evolutionary-based model of communication, these findings suggest that low-frequency vocalizations and stereotyped displays produced by territorial males may have been favored by sexual selection: they may provide reliable information to females about the fitness of the signaler and influence their choice of mate. They may also help in limiting conflicts between the territorial male and females over access to the breathing hole.
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Stutz, James Edward II. "Reconstruction of LGM and Post LGM Glacial Environment of McMurdo Sound: Implications for Ice Dynamics, Depositional Systems and Glacial Isostatic Adjustment." The Ohio State University, 2012. http://rave.ohiolink.edu/etdc/view?acc_num=osu1324595182.

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Chen, Jie. "The Influence of Lithospheric Flexure Induced by Volcano Loading on Neogene Basin Evolution in McMurdo Sound, West Antarctica." The Ohio State University, 2015. http://rave.ohiolink.edu/etdc/view?acc_num=osu1448967436.

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Hall, Tricia L. "Paleogene-Neogene seismic stratigraphy of McMurdo Sound, Antarctica: tectonic and climate controls on erosion, sediment delivery and preservation." The Ohio State University, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=osu1500407899029314.

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Clendon, Penelope Catherine. "Summertime surface mass balance and atmospheric processes on the McMurdo Ice Shelf, Antarctica." Thesis, University of Canterbury. Geography, 2009. http://hdl.handle.net/10092/2630.

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The aim of this research was to demonstrate the relationship between variations in summertime surface mass balance of the McMurdo Ice Shelf and atmospheric processes. The approach encompassed a broad range of techniques. An existing energy balance mass balance model was adapted to deal with debris-covered ice surfaces and modified to produce distributed output. Point based surface energy and mass balance for two key surfaces of the ice shelf were linked to different synoptic types that were identified using a manual synoptic classification. The distributed model was initialised with distributed parameters derived from satellite remote sensing and forced with data from a regional climate model. Patterns of summertime surface mass balance produced by the distributed model were assessed against stake measurements and with respect to atmospheric processes. During the summers of 2003-2004 and 2004-2005 an automatic weather station (AWS) was operated on bare and debris-covered ice surfaces of the McMurdo Ice shelf, Antarctica. Surface mass balance was calculated using the energy balance model driven by the data from the AWS and additional data from permanent climate stations. Net mass balance for the measurement period was reproduced reasonably well when validated against directly measured turbulent fluxes, stake measurements, and continuously measured surface height at the AWS. For the bare ice surface net radiation provided the major energy input for ablation, whereas sensible heat flux was a second heat source. Ablation was by both melt (70%) and sublimation (30%). At the debris-covered ice site investigated, it is inferred that the debris cover is sufficient to insulate the underlying ice from ablation. Synoptic weather situations were analysed based on AVHRR composite images and surface pressure charts. Three distinct synoptic situations were found to occur during the summers, these were defined as Type A, low pressure system residing in the Ross Sea Embayment; Type B, anticyclonic conditions across region; and Type C, a trough of low pressure extending into the Ross Sea Embayment. A dependence of surface energy fluxes and mass balance on synoptic situation was identified for the bare ice surface. The distributed model was found to produce spatial patterns of mass balance which compared well with stake measurements. Mass balance patterns show that the McMurdo Ice Shelf was generally ablating in the west, and accumulating in the east during summer. Areas of enhanced ablation were found which were likely to be caused by the surface conditions and topographic effects on the wind field. The mean summertime surface mass balance across the entire ice shelf for the 2003-2004 and 2004-2005 summers were –2.5 mm w.e. and –6.7 mm w.e. respectively. The differences between the two summers are inferred to be a result of more frequent type A conditions occurring during the summer of 2004-2005.
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Books on the topic "McMurdo Sound"

1

Belgrave, D. V. McMurdo Sound: Geodetic control network. Wellington: Dept. of Survey and Land Information, 1992.

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Stilwell, Jeffrey D., and Rodney M. Feldmann, eds. Paleobiology and Paleoenvironments of Eocene Rocks: McMurdo Sound, East Antarctica. Washington, D. C.: American Geophysical Union, 2000. http://dx.doi.org/10.1029/ar076.

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On the Ice: An Intimate Portrait of Life in McMurdo Station, Antarctica. Minneapolis, USA: Milkweed Editions, 2005.

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United States Geological Survey. Antarctica satellite image map: Ross Island and McMurdo Sound. For sale by the Survey, 2000.

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J, Barrett P., and New Zealand. Dept. of Scientific and Industrial Research., eds. Antarctic Cenozoic history from the CIROS-1 drillhole, McMurdo Sound. Wellington: DSIR Pub., 1989.

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J, Barrett P., ed. Antarctic Cenozoic history from the MSSTS-1 drillhole, McMurdo Sound. Wellington: Science Information Pub. Centre, 1986.

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(Editor), Jeffrey D. Stilwell, and Rodney M. Feldmann (Editor), eds. Paleobiology and Paleoenvironments of Eocene Rocks, McMurdo Sound, East Antarctica (Antarctic Research Series). Amer Geophysical Union, 2000.

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Book chapters on the topic "McMurdo Sound"

1

Littlepage, Jack L. "Oceanographic Investigations in Mcmurdo Sound, Antarctica." In Biology of the Antarctic Seas II, 1–37. Washington, D. C.: American Geophysical Union, 2013. http://dx.doi.org/10.1029/ar005p0001.

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Levy, Richard H., and David M. Harwood. "Sedimentary lithofacies of the McMurdo sound erratics." In Paleobiology and Paleoenvironments of Eocene Rocks: McMurdo Sound, East Antarctica, 39–61. Washington, D. C.: American Geophysical Union, 2000. http://dx.doi.org/10.1029/ar076p0039.

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Lewis, E. L., and R. G. Perkin. "The winter oceanography of McMurdo Sound, Antarctica." In Oceanology of the Antarctic Continental Shelf, 145–65. Washington, D. C.: American Geophysical Union, 1985. http://dx.doi.org/10.1029/ar043p0145.

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Harwood, David M., and Richard H. Levy. "The McMurdo erratics: Introduction and overview." In Paleobiology and Paleoenvironments of Eocene Rocks: McMurdo Sound, East Antarctica, 1–18. Washington, D. C.: American Geophysical Union, 2000. http://dx.doi.org/10.1029/ar076p0001.

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Knox, G. A. "Primary Production and Consumption in McMurdo Sound, Antarctica." In Antarctic Ecosystems, 115–28. Berlin, Heidelberg: Springer Berlin Heidelberg, 1990. http://dx.doi.org/10.1007/978-3-642-84074-6_11.

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Holmes, Mary Anne. "Clay mineral composition of glacial erratics, McMurdo Sound." In Paleobiology and Paleoenvironments of Eocene Rocks: McMurdo Sound, East Antarctica, 63–72. Washington, D. C.: American Geophysical Union, 2000. http://dx.doi.org/10.1029/ar076p0063.

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Pole, Mike, Bob Hill, and David Harwood. "Eocene plant macrofossils from erratics, McMurdo Sound, Antarctica." In Paleobiology and Paleoenvironments of Eocene Rocks: McMurdo Sound, East Antarctica, 243–51. Washington, D. C.: American Geophysical Union, 2000. http://dx.doi.org/10.1029/ar076p0243.

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Testa, J. W., D. B. Siniff, M. J. Ross, and J. D. Winter. "Weddell Seal — Antarctic Cod Interactions in McMurdo Sound, Antarctica." In Antarctic Nutrient Cycles and Food Webs, 561–65. Berlin, Heidelberg: Springer Berlin Heidelberg, 1985. http://dx.doi.org/10.1007/978-3-642-82275-9_76.

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Askin, Rosemary A. "Spores and pollen from the McMurdo Sound erratics, Antarctica." In Paleobiology and Paleoenvironments of Eocene Rocks: McMurdo Sound, East Antarctica, 161–81. Washington, D. C.: American Geophysical Union, 2000. http://dx.doi.org/10.1029/ar076p0161.

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Levy, Richard H., and David M. Harwood. "Tertiary marine palynomorphs from the McMurdo Sound erratics, Antarctica." In Paleobiology and Paleoenvironments of Eocene Rocks: McMurdo Sound, East Antarctica, 183–242. Washington, D. C.: American Geophysical Union, 2000. http://dx.doi.org/10.1029/ar076p0183.

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Conference papers on the topic "McMurdo Sound"

1

Yang, Mingyu, Tracy D. Frank, and Christopher R. Fielding. "CARBONATE CEMENTATION RELATED TO CRYOGENIC BRINE FORMATION DURING CENOZOIC GLACIATION, MCMURDO SOUND, ANTARCTICA." In GSA Annual Meeting in Indianapolis, Indiana, USA - 2018. Geological Society of America, 2018. http://dx.doi.org/10.1130/abs/2018am-316983.

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Yang, Mingyu, Tracy D. Frank, and Christopher R. Fielding. "DIAGENESIS OF GLACIOMARINE SANDSTONES RELATED TO CLIMATE AND GLACIAL PROCESSES IN MCMURDO SOUND, ANTARCTICA." In GSA Annual Meeting in Denver, Colorado, USA - 2016. Geological Society of America, 2016. http://dx.doi.org/10.1130/abs/2016am-280193.

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Christ, Andrew J., Paul R. Bierman, and Paul R. Bierman. "DISTRIBUTION AND SOURCES OF SCATTER IN ANTARCTIC EXPOSURE AGE CHRONOLOGIES: A CASE STUDY FROM MCMURDO SOUND." In GSA Annual Meeting in Indianapolis, Indiana, USA - 2018. Geological Society of America, 2018. http://dx.doi.org/10.1130/abs/2018am-322603.

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Walther, Tess L., Brenda L. Hall, and George H. Denton. "RECONSTRUCTION OF KOETTLITZ GLACIER IN THE MCMURDO SOUND REGION, ANTARCTICA DURING THE LAST GLACIAL MAXIMUM AND TERMINATION." In 54th Annual GSA Northeastern Section Meeting - 2019. Geological Society of America, 2019. http://dx.doi.org/10.1130/abs/2019ne-328560.

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Walther, Tess L., Brenda L. Hall, and George H. Denton. "GSA QUATERNARY GEOLOGY AND GEOMORPHOLOGY DIVISION MARIE MORISAWA AWARD: RECONSTRUCTION OF KOETTLITZ GLACIER, SOUTHERN MCMURDO SOUND, ANTARCTICA, DURING THE LAST GLACIAL MAXIMUM AND TERMINATION." In GSA Annual Meeting in Phoenix, Arizona, USA - 2019. Geological Society of America, 2019. http://dx.doi.org/10.1130/abs/2019am-339317.

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Christ, Andrew J., and David R. Marchant. "A TERRESTRIAL PERSPECTIVE OF THE LGM IN MCMURDO SOUND, ANTARCTICA: IMPLICATIONS FOR MARINE ICE SHEET DYNAMICS, ICE FLOW, AND DEGLACIATION OF THE ROSS SEA EMBAYMENT." In GSA Annual Meeting in Seattle, Washington, USA - 2017. Geological Society of America, 2017. http://dx.doi.org/10.1130/abs/2017am-305311.

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Christ, Andrew J., and David R. Marchant. "GLACIAL GEOMORPHOLOGIC MAP OF MCMURDO SOUND, ANTARCTICA (78°S): A TERRESTRIAL RECORD OF LATE PLEISTOCENE GLACIATIONS IN THE ROSS SEA WITH IMPLICATIONS FOR FORMER ICE SHEET VOLUME AND CONTRIBUTION TO DEGLACIAL SEA LEVEL RISE." In GSA Annual Meeting in Seattle, Washington, USA - 2017. Geological Society of America, 2017. http://dx.doi.org/10.1130/abs/2017am-305337.

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