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Showing 1 to 20 of 134 for “"Last Glacial Maximum"”.

  1. Modeling Neotropical Ecosystems during the Last Glacial Maximum

    Sato, Hiromitsu2019

    … present contexts with particular emphasis on the Last Glacial Maximum. The first project was focused on discerning the effects of low atmospheric carbon dioxide and temperature on the carbon exchange of a well-watered tropical forest using a canopy-scale ecophysiological model. The radiative …

    toronto-retro Repository record

  2. The Antarctic Peninsula ice sheet since the Last Glacial Maximum

    Heroy, David CarlsonRice University2006

    … and configuration of the ice sheet during the Last Glacial Maximum (LGM), an important issue for quantifying post-LGM sea level rise and providing boundary conditions for General Circulation Models. Geomorphic features analyzed in multibeam swath bathymetry and seismic data from the 2002 cruise …

    rice Repository record

  3. Tropical climate variability from the last glacial maximum to the present

    Dahl, Kristina A.Massachusetts Institute of Technology and Woods Hole Oceanographic Institution2005

    … of tropical climate variability from the Last Glacial Maximum to the present. The temporal variability of two specific tropical climate phenomena is examined. The first is the position of the Intertropical Convergence Zone (ITCZ) in the Atlantic basin, which affects sea surface temperature …

    woods-hole Repository record

  4. Tropical climate variability from the last glacial maximum to the present

    Dahl, Kristina ArielMassachusetts Institute of Technology2005

    … of tropical climate variability from the Last Glacial Maximum to the present. The temporal variability of two specific tropical climate phenomena is examined. The first is the position of the Intertropical Convergence Zone (ITCZ) in the Atlantic basin, which affects sea surface temperature …

    mit Repository record

  5. Micromorphology of Last Glacial Maximum Grounding line sediments around the Antarctic Peninsula

    Arnold, HollyBrock University2012

    Sediments recovered from seven Last Glacial Maximum grounding lines sites, around the Antarctic Peninsula, were analyzed using micromorphology. This is the first evidence that grounding line sediments from around the Antarctic Peninsula have complex deformational histories and subglacial origins. …

    brock Repository record

  6. The demography of Red Sea reef fishes since the Last Glacial Maximum

    Emms, MadeleineUniversity of Cambridge2022

    … many reef fish populations persisted during the Last Glacial Maximum despite a significant loss of coral reefs. I studied their demogaphic history to determine the impact of environmentally-induced habitat loss. High-throughput sequencing data combined with an Approximate Bayesian Computation …

    cambridge Repository record

  7. Atlantic Ocean circulation at the Last Glacial Maximum : inferences from data and models

    Dail, Holly J.Massachusetts Institute of Technology and Woods Hole Oceanographic Institution2012

    … atmospheric forcing in the Atlantic Ocean at the Last Glacial Maximum (LGM, 18-21 thousand years before present). Relative to the pre-industrial climate, LGM atmospheric CO2 concentrations were about 90 ppm lower, ice sheets were much more extensive, and many regions experienced significantly …

    woods-hole Repository record

  8. Atlantic Ocean circulation at the last glacial maximum : inferences from data and models

    Dail, Holly JanineMassachusetts Institute of Technology2012

    … atmospheric forcing in the Atlantic Ocean at the Last Glacial Maximum (LGM, 18-21 thousand years before present). Relative to the pre-industrial climate, LGM atmospheric CO₂ concentrations were about 90 ppm lower, ice sheets were much more extensive, and many regions experienced significantly …

    mit Repository record

  9. Inferring ocean circulation during the Last Glacial Maximum and last deglaciation using data and models

    Amrhein, Daniel E.Massachusetts Institute of Technology and Woods Hole Oceanographic Institution2016

    Since the Last Glacial Maximum (LGM, ~ 20,000 years ago) air temperatures warmed, sea level rose roughly 130 meters, and atmospheric concentrations of carbon dioxide increased. This thesis combines global models and paleoceanographic observations to constrain the ocean’s role in storing and …

    woods-hole Repository record

  10. Inferring ocean circulation during the last glacial maximum and last deglaciation using data and models

    Amrhein, Daniel EdwardMassachusetts Institute of Technology2017

    Since the Last Glacial Maximum (LGM, ~ 20,000 years ago) air temperatures warmed, sea level rose roughly 130 meters, and atmospheric concentrations of carbon dioxide increased. This thesis combines global models and paleoceanographic observations to constrain the ocean's role in storing and …

    mit Repository record

  11. Climatic factors influencing Last Glacial Maximum and modern glacial conditions in the tropical and subtropical Andes

    Vargo, Lauren

    … subtropical Andes. Model results show average Last Glacial Maximum (LGM) equilibrium line altitude (ELA) depressions to be approximately 600 m in the tropics and 800 m in the subtropics, consistent with studies that suggest the subtropical Andes were glaciated at LGM. While previous studies …

    unm Repository record

  12. Comparative Phylogeography of Eastern Chipmunks and White -Footed Mice: Population Histories Since the Last Glacial Maximum

    Rowe, Kevin C.University of Illinois at Urbana-Champaign2015

    … sequences of all P. leucopus indicated that post-glacial expansions into the region did not confound the analysis of microsatellite variation. This study provides important empirical data on the importance of urban development in disrupting evolutionary processes within natural populations.

    uiuc Repository record

  13. Distribution of post-Last Glacial Maximum Sedimentary Deposits in the Amundsen Sea, Antarctica, from Subbottom Seismic Profiles

    Villafranca, JuliaUniversity of Houston2023

    … West Antarctica provide insight to geologic and glacial processes that have occurred across the continental shelf since the Last Glacial Maximum (~20 ka), as well as processes that are occurring today. Subbottom profiles collected across the Amundsen Sea Embayment during the austral summers of …

    houston Repository record

  14. Exploring mechanisms for the decrease of atmospheric CO₂ during the last glacial maximum using a four-box ocean model

    Archfield, Stacey A. (Stacey Anne), 1976-Massachusetts Institute of Technology2001

    A record of carbon dioxide for the last 400,000 years revealed that atmospheric CO2 decreased from a pre-industrial concentration of 280 ppmV to approximately 200 ppmV during the last glacial maximum (Petit et al., 1999). Several hypotheses as to why this happened have been suggested yet no one …

    mit Repository record

  15. The evolution of the Greenland Ice Sheet from the Last Glacial Maximum to present-day: An assessment using glaciological and Glacial Isostatic Adjustment modelling

    Simpson, Matthew James RossDurham University2009

    … of Greenland ice sheet (GrIS) evolution from the Last Glacial Maximum (LGM, 21 ka BP) to the present-day using, primarily, observations of relative sea level (RSL) as well as field data on past ice extent. The new model (Huy2) fits a majority of the observations and is characterised by a number of …

    durham Repository record

  16. Evaluation of Paleo-climate for the Boise Area, Idaho, from the last Glacial Maximum to the Present Based on delta 2H and delta 18O Groundwater Composition

    Schlegel, Melissa Eileen2005

    … surface temperature between the present and the last glacial maximum (LGM). The local temperature decreased 4-5 °C from the present to the LGM for the Boise area.</p>

    byu Repository record

  17. Investigating sediment size distributions and size-specific Sm-Nd isotopes as paleoceanographic proxy in the North Atlantic Ocean: reconstructing past deep-sea current speeds since Last Glacial Maximum

    Li, YutingUniversity of Cambridge2018

    … and in the central North Atlantic since the Last glacial Maximum (LGM). North Atlantic is a useful place to explore how size-specific sediment provenance is related to sedimentary inputs and deep-current advection because mantle-derived materials in Iceland is a unique sedimentary source …

    cambridge Repository record

  18. Late quaternary Alaskan paleoclimate : geoarchaeological insights into the Pleistocene-Holocene transition.

    DiPietro, Lyndsay M., 1989-Baylor University.2018

    … undergone dramatic changes since the end of the Last Glacial Maximum, environmentally and climatically. These changing conditions likely contributed to the changes in human behavior observed in the earliest human inhabitants who migrated into the region sometime within this time period. In order …

    baylor Repository record

  19. Exploring Prehistoric Technology at the Tràng An Landscape Complex, Ninh Bình Province, Vietnam

    Utting, BenjaminUniversity of Cambridge2022

    … and stone tool technology during the terminal Last Glacial Maximum at six archaeological cave and rockshelter sites throughout the Tràng An Landscape Complex, Ninh Bình Province, northern Vietnam. Historical analyses of stone tool assemblages from Southeast Asia have relied on …

    cambridge Repository record

  20. The Response of High Elevation Wetlands to Past Climate Change, and Implications for the Future

    Slayton, Ian Arthur2017

    … the kettle lake formed shortly after the Last Glacial Maximum, at least 16,201 cal yr BP and that peat began accumulating in Whiskey Fen 12,347 cal yr BP. The timing of the formation of this kettle lake provides new details towards the timing of glacial retreat after the Last Glacial …

    denver Repository record

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