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1. AGASEA Ice Thickness Profile Data from the Amundsen Sea Embayment, Antarctica [NSIDC-0517]
This data set contains line-based radar-derived ice thickness and bed elevation data, collected as part of the Airborne Geophysical Survey of the Amundsen Embayment (AGASEA) expedition, which took ...


2. NMML Harbor Porpoise Aerial Survey, Alaska Peninsula, Replicate 1, 1992 [seamap135]   PARENT DIF
On 6 July to 9 August 1992, as part of a larger study, Alaska harbor porpoise (Phocoena phocoena) abundance was investigated during an aerial survey off the south side of the Alaska Peninsula. ...


3. NMML Harbor Porpoise Aerial Survey, Alaska Peninsula, Replicate 2, 1992 [seamap136]   PARENT DIF
On 6 July to 9 August 1992, as part of a larger study, Alaska harbor porpoise (Phocoena phocoena) abundance was investigated during an aerial survey off the south side of the Alaska Peninsula. ...


4. NMML Harbor Porpoise Aerial Survey, Kodiak Island, Replicate 3, 1992 [seamap134]   PARENT DIF
On 6 July to 9 August 1992, as part of a larger study, Alaska harbor porpoise (Phocoena phocoena) abundance was investigated during an aerial survey off Kodiak Island. Employing a Twin ...


5. NMML Harbor Porpoise Aerial Survey, SE Alaska, 1991 [seamap142]   PARENT DIF
On 15 August 1991, as part of a larger study, Alaska harbor porpoise (Phocoena phocoena) abundance was investigated during an aerial survey of waters off southeastern Alaska. A Twin Otter ...


6. NMML Harbor Porpoise Aerial Survey, SE Alaska, Replicate 1, 1993 [seamap139]   PARENT DIF
On 1 to 26 June 1993, as part of a larger study, Alaska harbor porpoise (Phocoena phocoena) abundance was investigated during an aerial survey from Prince William Sound to Dixon Entrance. ...


7. NMML Harbor Porpoise Aerial Survey, SE Alaska, Replicate 2, 1993 [seamap140]   PARENT DIF
On 1 to 26 June 1993, as part of a larger study, Alaska harbor porpoise (Phocoena phocoena) abundance was investigated during an aerial survey from Prince William Sound to Dixon Entrance. ...


8. NMML Harbor Porpoise Aerial Survey, SE Alaska, Replicate 3, 1993 [seamap141]   PARENT DIF
On 1 to 26 June 1993, as part of a larger study, Alaska harbor porpoise (Phocoena phocoena) abundance was investigated during an aerial survey from Prince William Sound to Dixon Entrance. ...


9. NEFSC Aerial Survey - Summer 1995 [seamap109]   PARENT DIF
This aerial survey was flown in conjunction with shipboard surveys being conducted during the same time frame. The R/V Abel-J was chartered to conduct line transect surveys offshore from ...


10. NEFSC Aerial Survey - Summer 1998 [seamap113]   PARENT DIF
Platform: NOAA 57 Twin Otter Aircraft Dates: July 18 - August 21 1998 Location: Inshore areas from 38? north Latitude on the US east coast to Cape Breton Island, Nova Scotia, Canada This ...


11. NMML Harbor Porpoise Aerial Survey, Bristol Bay, Replicate 1, 1991 [seamap128]   PARENT DIF
From 4 to 13 August 1991, as part of a larger study, Alaska harbor porpoise (Phocoena phocoena) abundance was investigated during an aerial survey throughout the coastal waters of Bristol ...


12. NMML Harbor Porpoise Aerial Survey, Bristol Bay, Replicate 2, 1991 [seamap129]   PARENT DIF
From 4 to 13 August 1991, as part of a larger study, Alaska harbor porpoise (Phocoena phocoena) abundance was investigated during an aerial survey throughout the coastal waters of Bristol ...


13. NMML Harbor Porpoise Aerial Survey, Bristol Bay, Replicate 3, 1991 [seamap130]   PARENT DIF
From 4 to 13 August 1991, as part of a larger study, Alaska harbor porpoise (Phocoena phocoena) abundance was investigated during an aerial survey throughout the coastal waters of Bristol ...


14. NMML Harbor Porpoise Aerial Survey, Cook Inlet, 1991 [seamap131]   PARENT DIF
On 1 and 2 August 1991, as part of a larger study, Alaska harbor porpoise (Phocoena phocoena) abundance was investigated during an aerial survey throughout the coastal waters of Cook Inlet. ...


15. NMML Small Cetacean (coastal) Aerial Survey 1998, Gulf of Alaska [seamap116]   PARENT DIF
Researchers from NMML's Cetacean Assessment and Ecology Program conducted the line transect aerial surveys for harbor porpoise and Dall's porpoise from 27 May to 28 July 1998 in the Gulf ...


16. NMML Small Cetacean (coastal) Aerial Survey 1999, Gulf of Alaska [seamap117]   PARENT DIF
The National Marine Mammal Laboratory (NMML) conducted an aerial survey for small cetaceans from 5 June to 4 July 1999 in Bristol Bay and along southwestern Alaska Peninsula (out to the ...


17. Canada Maritimes Regional Cetacean Sightings (OBIS Canada) [obis.marwhale]   PARENT DIF
This is an OBIS formatted version of the Canadian government's Department of Fisheries and Oceans Maritimes Region database for visual sightings of cetaceans (e.g. whales, dolphins and porpoises) ...


18. Locations of Seals in Patagonian Large Marine Ecosystem (OBIS South America, ARGENTINA (AR-OBIS) SOUTHWEST ATLANTIC) [OBIS.Patagonia_Seals]   CHILD DIFs
Distribution of three species of pinnipeds that breed along the Patagonian coast of Argentina and Chile. Coastal and at sea locations of South American ...


19. Bedrock topography over the entire drainage basin of the Astrolabe outlet glacier, Terre Adélie Sector, Antarctica [1053_1_IPEV_FR]
All these data over the Astrolabe Glacier have been collected in the framework of a better understanding of the specific dynamics of outlet glaciers in Antarctica. The major set is represented by ...


20. BOREAS AFM-13 Aircraft Flux Analyses [BOREAS_AFM13AFR]
For the BOReal Ecosystem-Atmosphere Study (BOREAS) in 1994 and 1996, the Airborne Fluxes and Meteorology (AFM) group was involved in measurements (from different platforms and heights within the atmospheric ...


21. IceBridge Mission Flight Reports [IFLTRPT]
The IceBridge Mission Flight Reports data set contains flight reports from NASA Operation IceBridge Greenland, Arctic, Antarctic, and Alaska missions. Flight reports contain information on region, ...


22. Subglacial Lakes and the Onset of Ice Streaming: Recovery Lakes [bell_0636883]
This award support a project to study the role that subglacial water plays in the overall stability of major ice sheets.


23. BOREAS HYD-02 ESTIMATED SNOW WATER EQUIVALENT (SWE) FROM MICROWAVE MEASUREMENTS [BOREAS_H02SWED]
The surface meteorological data collected at the BOREAS tower and ancillary sites are being used as inputs to an energy balance model to monitor the amount of snow storage in the boreal forest region. ...


24. IPY: Collaborative Proposal: Constraining the Mass-Balance Deficit of the Amundsen Coast's Glaciers [Gogineni_0631994]
This award supports a project to gather data to better understand the mass balance of the West Antarctic Ice Sheet, in the Pine Island and Thwaites region, through the combination of radar altimetry ...


25. BOREAS FOLLOW-ON FLX-03 AREA-AVERAGED FLUX DATA FOR THE NSA AND SSA [FLX3_AREA_AVG]
Calculations of area-averaged fluxes using extracted flux data from BORIS.


26. BOREAS AFM-04 TWIN OTTER AIRCRAFT FLUX DATA [BOREAS_AFM4TOFX]
The BOREAS AFM-04 team used the NRC Twin Otter aircraft in 1994 and 1996 to make measurements in the boundary layer of the fluxes of sensible and latent heat, momentum, ozone, methane, and carbon ...


27. BOREAS AFM-04 TWIN OTTER AIRCRAFT SOUNDING DATA [BOREAS_AFM4TOAS]
The BOREAS AFM-04 team used the NRC Twin Otter aircraft to make sounding measurements through the boundary layer. These measurements included concentrations of carbon dioxide and ozone, atmospheric ...


28. Millennially averaged accumulation rates for the Lake Vostok region inferred from deep internal layers [Vostok_accum]
The depths of radar-detected internal layers can be used to infer the spatial variability of accumulation rates. Here we infer accumulation rates from three radar layers (26, 35 and 41ka old) in the ...


29. Modeled radar attenuation-rate profile at the Vostok 5G ice-core site [Vostok_atten]
The modeled radar attenuation-rate profile presented here shows the predicted contributions from pure ice and impurities to radar attenuation at the Vostok 5G ice-core site, as well as the total attenuation ...


30. AIRCRAFT FLUX-FILTERED: NRCC (FIFE) [FIFE_AF_FLT_M]
The purpose of this study was to develop alternatives to ground-based measurements in order to obtain information required to predict the effects of soil and land use on the fluxes of greenhouse gases, ...


31. AIRCRAFT FLUX-RAW: NRCC (FIFE) [FIFE_AF_RAW_M]
The purpose of this study was to develop alternatives to ground-based measurements in order to obtain information required to predict the effects of soil and land use on the fluxes of greenhouse gases, ...


32. AIRCRAFT FLUX-DETRENDED: NRCC (FIFE) [FIFE_AF_DET_M]
The purpose of this study was to develop alternatives to ground-based measurements in order to obtain information required to predict the effects of soil and land use on the fluxes of greenhouse gases, ...


33. Dynamics of Ice Streams: A Physical Statistical Approach [Cressie_0229292]
Ice streams are believed to play a major role in determining the response of their parent ice sheet to climate change, and in determining global sea level by serving as regulators ...


34. Digital Terrain Data Sets for Alaska, USGS [EARTH_LAND_USGS_DEM_AK1]
This data set contains up to nine types of digital elevation data: 1-1 degree blocks, 2-1 degree x 3 degree mosaic of elevation (latitude/longitude coordinate system), 3-1 ...


35. New Zealand Geomagnetic Database [GNS_GD]
The New Zealand Geomagnetic Database documents the short-term and long-term fluctuations in the Earth's regional (New Zealand) magnetic field, including induction and diurnal effects. ...


36. Aeromagnetic and gravity data of the Central Transantarctic Mountains [nsf0232042]
Near complete coverage of the East Antarctic shield by ice hampers geological study of crustal architecture important for understanding global tectonic and climate history. Limited exposures ...


37. Image Annotation of COMET Case Study 001: The Storm of the Century (March 1993) [ANNOTATED_COMET001_UCAR]   CHILD DIFs
This annotated case contains data from the well-known "storm of the century", which devastated the eastern third of the United States in mid-March 1993. For more information, see: ...


38. NMML Harbor porpoise Aerial Survey, Kodiak Island, Replicate 1, 1992 [seamap132]   PARENT DIF
On 6 July to 9 August 1992, as part of a larger study, Alaska harbor porpoise (Phocoena phocoena) abundance was investigated during an aerial survey off Kodiak Island. Employing a Twin ...


39. Understanding the Boundary Conditions of the Lake Vostok Environment: A Site Survey for Future Work [LVS]   CHILD DIFs
Abstract This project with funding provided by the Office of Polar Programs under the Life in Extreme Environments (LExEn) Program, includes a geophysical study of Lake Vostok, ...


40. National Petroleum Reserve Alaska: Aerial Gamma Ray and Magnetic Survey data; USGS [EARTH_INT_USGS_NPRA_GAMMA_MAG1]
The National Petroleum Reserve in Alaska (NPRA) is located in the primitive wilderness of Alaska's North Slope. The U.S. Geological Survey (USGS) began some geological surveying in this ...


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