A5028420525- Geology and Paleoclimatology Research
- Cryospheric studies and observations
- Climate change and permafrost
- Methane Hydrates and Related Phenomena
- Pleistocene-Era Hominins and Archaeology
- Geological Studies and Exploration
- Polar Research and Ecology
- Archaeology and ancient environmental studies
- Isotope Analysis in Ecology
- Indigenous Studies and Ecology
- Landslides and related hazards
- Geological Modeling and Analysis
- Maritime and Coastal Archaeology
- Geochemistry and Geologic Mapping
- Aquatic and Environmental Studies
- Hydrology and Sediment Transport Processes
- Fire effects on ecosystems
- Pacific and Southeast Asian Studies
- Species Distribution and Climate Change
- Arctic and Russian Policy Studies
- Astro and Planetary Science
- Soil erosion and sediment transport
- Radioactive contamination and transfer
- Geological formations and processes
University at Buffalo, State University of New York
2017-2024
Berkeley Geochronology Center
2022-2024
Abstract. We report on the infrastructure and scientific progress of Ghub Project, a gateway providing an open-access online platform for cryosphere researchers to publish share tools datasets. is designed reduce bottlenecks accelerate in sciences. Open-access science lowers barriers, encourages collaboration, expands network participants research, which particularly important given major impact climate change world's glaciers ice sheets, whose demise contributes sea level rise. conclude...
We review available chronologies that constrain the timing of glacier fluctuations during last deglaciation in Alaska. address three questions relating to glacial termination: (i) How did recession relate buildup global CO2, such as onset CO2 rise at ~18 ka? (ii) Did glaciers fluctuate synchrony with Heinrich Stadial 1 (18-14.6 ka)? And, (iii) what is spatio-temporal pattern change climatically turbulent late interval (14.6-11.7 The existing record incomplete, yet reveals most Alaskan...
Abstract. The lack of continental ice sheets in Alaska during the Last Glacial Maximum (LGM; 26–19 ka) has long been attributed to extensive aridity western Arctic. More recently, climate model outputs, a few isolated paleoclimate studies, and global synthesis products show mild summer temperature depressions compared much high northern latitudes. This suggests importance limited controlling relatively glacier growth LGM. To explore this further, we present new statewide map LGM alpine...
Abstract. Alpine glacier-based temperature reconstructions spanning the last deglaciation provide critical constraints on local to regional climate change and have been reported from several formerly glaciated regions around world yet remain sparse high-northern-latitude regions. Using newly previously 10Be-dated moraines, we report paleo-glacier equilibrium line altitudes (ELAs) for 15 time slices Last Glacial Maximum (LGM) Little Ice Age (LIA) a valley in western Alaska Range. We translate...
Abstract. We quantify retreat rates for three alpine glaciers in the Sawatch Range of southern Rocky Mountains following Last Glacial Maximum using 10Be ages from ice-sculpted, valley-floor bedrock transects and statistical analysis via BACON program R. Glacier at (100 %) or near (∼83 extents initiated between 16.0 15.6 ka was complete by 14.2–13.7 ranging 35.6 6.8 m a−1. Deglaciation commenced ∼2–3 kyr later than onset rising global CO2 prior to temperatures observed North Atlantic region...
Abstract. We report new cosmogenic 21Ne-in-quartz exposure ages from 18 samples on three distinct moraines deposited in the Lost Creek drainage, approximately 3–7 km down-valley Lassen Peak Volcanic National Park. Although measuring 21Ne quartz is generally straightforward, accurate dating of deposits late Pleistocene-age rarely possible due to significant quantities non-cosmogenic present most lithologies. Young quartz-bearing volcanic rocks have been observed be an exception. take...
Abstract. We report new cosmogenic 21Ne in quartz exposure ages from 18 samples on three distinct moraines deposited the Lost Creek drainage, approximately 3–7 km down-valley Lassen Peak Volcanic National Park. Although measuring is generally straightforward, accurate dating of deposits late Pleistocene rarely possible due to significant quantities non-cosmogenic present most lithologies. Young quartz-bearing volcanic rocks have been observed be an exception. take advantage moraine boulders...
Alaska experimentaron un retroceso significativo (~40% de su longitud durante el Último Máximo Glaciar) anterior al inicio aumento CO 2 hacia 18 ka.Esto apunta a una mayor insolación en los glaciares comparación con las latitudes medias.A pesar algunos reavances Stadial 1 Heinrich, la mayoría continuaron retrocediendo.Esto sugiere que fueron relativamente inmunes efectos circulación meridional atlántica retorno.Finalmente, Younger Dryas (9 14 registros) estaban por encima posición finales...
Abstract. The lack of continental ice sheets in Alaska during the Last Glacial Maximum (LGM; 26–19 ka) has long been attributed to arid and relatively warm summer conditions. Records this aridity across are abundant, yet quantitative temperature reconstructions have comparatively lacking until recently. Climate model outputs, a few isolated paleoclimate studies, global synthesis products show mild depressions compared much high northern latitudes. This suggests importance controlling limited...
Abstract. Alpine glacier-based temperature reconstructions spanning the last deglaciation provide critical constraints on local-to-regional climate change and have been reported from several formerly glaciated regions around world yet remain sparse high northern latitude regions. Using newly previously 10Be-dated moraines, we report paleo-glacier equilibrium line altitudes (ELA) for 15 time slices Last Glacial Maximum (LGM) to Little Ice Age (LIA) a valley in western Alaska Range. We...