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Polar bears (Ursus maritimus) require the relative warmth and stability afforded by snow dens for successful reproduction. Pregnant bears must travel from foraging habitats on the sea ice to land in autumn to establish winter dens. Data of sea ice extent and composition from satellite-acquired passive microwave (PMW) imagery show a reduction in summer sea ice extent throughout the Arctic from 1979-2006. Additionally, General Circulation Models (GCM) predict that Arctic sea ice extent will continue to diminish throughout the 21st century. Greater energetic demands will be placed on pregnant polar bears in the future if they travel greater distances from summer forage habitats to traditional denning habitats on land....
Categories: Publication; Types: Citation; Tags: Administrative Report
Core Research Center, core R700, from well operated by USGSRaw Properties from download, web scrape, MapServer, and Macrostrat API{"Lib Num": "R700", "API Num": null, "Operator": "USGS", "Well Name": "Y-1 BLACK SAND BASIN", "Field": "UPPER GEYSER BASIN", "State": "WY", "County": "YELLOWSTONE NATL PARK", "Type": "FULL", "Photos": "T", "Thin Sec": "T", "Analysis": "T", "Latitude": "44.45", "Longitude": "-110.85", "coordinates_geohash": "9xchveckpb94", "Source": "DERIVED FROM MAPPED LOCATION", "Security Flag": "NO SPECIAL RESTRICTIONS", "crc_collection_name": "core", "sb_parent_id": "4f4e49dae4b07f02db5e0486", "intervals": [{"Formation": "UNKNOWN", "Age": null, "Min Depth": "0", "Max Depth": "215"}], "crcwc_url": "https://my.usgs.gov/crcwc/core/report/13260",...
Core Research Center, core T988, from well operated by USGSRaw Properties from download, web scrape, MapServer, and Macrostrat API{"Lib Num": "T988", "API Num": null, "Operator": "USGS", "Well Name": "OGALLALA WELL 1", "Field": null, "State": "WY", "County": "LARAMIE", "Type": "FULL", "Photos": "T", "Thin Sec": "F", "Analysis": "T", "Latitude": "41.0616", "Longitude": "-104.4624", "coordinates_geohash": "9xm9wghc1thb", "Source": null, "Security Flag": "NO SPECIAL RESTRICTIONS", "crc_collection_name": "core", "sb_parent_id": "4f4e49dae4b07f02db5e0486", "intervals": [{"Formation": "OGALLALA", "Age": "TERT", "Min Depth": "20", "Max Depth": "277"}, {"Formation": "WHITE RIVER", "Age": "TERT", "Min Depth": "278", "Max...
Core Research Center, core E768, from well operated by USGSRaw Properties from download, web scrape, MapServer, and Macrostrat API{"Lib Num": "E768", "API Num": "5002320013", "Operator": "USGS", "Well Name": "1 WALAKPA", "Field": "EXPLORATORY", "State": "AK", "County": "BARROW", "Type": "SLABBED", "Photos": "T", "Thin Sec": "T", "Analysis": "T", "Latitude": "71.099339", "Longitude": "-156.88439", "coordinates_geohash": "bs8kqp0r8v2j", "Source": "FROM STATE RECORDS", "Security Flag": "VIEWING ALLOWED, NO SAMPLING UNLESS APPROVED", "crc_collection_name": "core", "sb_parent_id": "4f4e49dae4b07f02db5e0486", "intervals": [{"Formation": "UNKNOWN", "Age": null, "Min Depth": "1838", "Max Depth": "1889"}, {"Formation": "UNKNOWN",...
Core Research Center, core U599, from well operated by USGSRaw Properties from download, web scrape, MapServer, and Macrostrat API{"Lib Num": "U599", "API Num": null, "Operator": "USGS", "Well Name": "78-12 CORE HOLE", "Field": null, "State": "CO", "County": "GARFIELD", "Type": "SLABBED", "Photos": "T", "Thin Sec": "T", "Analysis": "F", "Latitude": "39.63254", "Longitude": "-108.760506", "coordinates_geohash": "9x49mngh28bv", "Source": "FROM STATE RECORDS", "Security Flag": "NO SPECIAL RESTRICTIONS", "crc_collection_name": "core", "sb_parent_id": "4f4e49dae4b07f02db5e0486", "intervals": [{"Formation": "GREEN RIVER", "Age": "TERT", "Min Depth": "20", "Max Depth": "330"}], "crcwc_url": "https://my.usgs.gov/crcwc/core/report/15615",...
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