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Rising Oceans – Too Late to Turn the Tide?

By Guest PostJuly 16, 2011Environmentantarctic ice sheets, anthropogenic reasons, atmosphere, atmosphere ocean interactions, bahamas, barbados, bette otto bliesner, cause and effect relationships, climate, climate models, computer simulations, current global warming, earth, global distribution of sea surface temperatures, great polar ice sheets, greenhouse gas concentrations, greenhouse gases, greenland, ice caps, jonathan overpeck, last interglacial period, melting ice sheets, mountain glaciers, natural reasons, nicholas mckay, paleoceanic records, paleoclimate, rising sea levels, sea level, thermal expansion of seawater, thermal expansion of warming ocean waters, university of arizona

*Melting ice sheets contributed much more to rising sea levels than thermal expansion of warming ocean waters during the Last Interglacial Period, a UA-led team of researchers has found. The results further suggest that ocean levels continue to rise long after warming of the atmosphere levels off.*

Thermal expansion of seawater contributed only slightly to rising sea levels compared to melting ice sheets during the Last Interglacial Period, a University of Arizona-led team of researchers has found.

The study combined paleoclimate records with computer simulations of atmosphere-ocean interactions and the team’s co-authored paper is accepted for publication in Geophysical Research Letters. (more…)

New Map Reveals Giant Fjords Beneath East Antarctic Ice Sheet

By Guest PostJune 4, 2011Environmentairborne geophysical instruments, antarctic ice sheet, Antarctica, aurora subglacial basin, australia, computer modelers, dc 3 aircraft, donald blankenship, duncan young, earth, east antarctic ice sheet, east antarctica, fjords, global sea level, high resolution topographic map, ice cut channels, ice penetrating radar, icecap, icecap project, investigating the cryospheric evolution of the central antarctic plate, sea level, sea level fluctuations, texas, university of texas at austin, world war

AUSTIN, Texas — Scientists from the U.S., U.K. and Australia have used ice-penetrating radar to create the first high-resolution topographic map of one of the last uncharted regions of Earth, the Aurora Subglacial Basin, an immense ice-buried lowland in East Antarctica larger than Texas.

The map reveals some of the largest fjords or ice cut channels on Earth, providing important insights into the history of ice in Antarctica. The data will also help computer modelers improve their simulations of the past and future Antarctic ice sheet and its potential impact on global sea level. (more…)

UF Pine lsland Pollen Study Leads to Revision of State’s Ancient Geography

By Guest PostMarch 3, 2011Scienceavon park formation, calusa indian village, david jarzen, deep injection well, early eocene, evolution of mammals, florida, flowering plants, fort myers, fossils, fredrick rich, geologic history, gray lignitic clay, jonathan bloch, limestone, marine environments, oligocene epoch, paleontologist, phytoplankton, pine island, pollen, sea level

GAINESVILLE, Fla. — A new University of Florida study of 45-million-year-old pollen from Pine Island west of Fort Myers has led to a new understanding of the state’s geologic history, showing Florida could be 10 million to 15 million years older than previously believed.

The discovery of land in Florida during the early Eocene opens the possibility for researchers to explore the existence of land animals at that time, including their adaptation, evolution and dispersal until the present. (more…)

Tag Archives: sea level

Rising Oceans – Too Late to Turn the Tide?

New Map Reveals Giant Fjords Beneath East Antarctic Ice Sheet

UF Pine lsland Pollen Study Leads to Revision of State’s Ancient Geography