Data

This dataset contains isotope results of stable isotope (δ13C and δ15N) and radicoarbon (F14C) analyses of muscle tissue from fish collected in the nearshore Beaufort Sea, Alaska in summers 2017-2019.

This dataset is comprised of 10 aerial images of three different study areas on Alaska\'s Arctic Coastal Plain flown by NASA in 1974, 1977, 1979 and obtained from the USGS EROS Data Center via the EarthExplorer website in 2013. The images represent an historical snapshot of the landscape from that time. The images were scanned and georeferenced to various contemporary (2002-2010) satellite imagery

This dataset is comprised of 36 black and white 9x9 inch aerial images of four different study areas on Alaska\'s Arctic Coastal Plain taken between 1948-1949 and obtained from the Alaska Satellite Facility in 2013. The images represent an historical snapshot of the landscape from that time. \r\n The images were scanned and geo-referenced to various contemporary (2002-2010) satellite imagery using

This dataset is comprised of a single aerial image of a single area on Alaska\'s Arctic Coastal Plain taken on 21 June 1955 by the U.S. Air Force and obtained from the USGS EROS data center via the EarthExplorer website in 2013. The image represents an historical snapshot of the landscape from that time. \r\n The image was scanned and geo-referenced to various contemporary (2002-2010) satellite im

These data are part of the Gulf Watch Alaska (GWA) long-term monitoring program, nearshore monitoring component. The dataset consists of 10 tables of data organized into four folders. The data are presented in Comma Separated Value (CSV) format exported from a Microsoft Access relational database. The tables are: 1) invertebrate taxonomy, 2) limpet size, 3) limpet counts, 4) Nucella, Katharina, an

This dataset is derived from images from a variety of Earth observing satellite imagery sources collected at known walrus coastal haulouts in Alaska and Chukotka, Russia. Earth observing imagery sources used in this data release include (but are not limited to) optical imagery collections by: (1) the European Space Agency's Sentinel-2 mission, (2) the Plant Labs Planet Scope constellation, and (3)

This data package presents raw legacy data collected during 1980 on the Yakutat Forelands of southeast Alaska. The data were collected to identify and understand the occurrence and distribution of birds and mammals in the ocean and wetlands near Yakutat. Migration "sea watches", aerial surveys, and ground plot surveys were conducted in the foreland area of Yakutat in spring (April - May) and fall

These are surgery data sheets filled out during operations on many bird species by the USGS Alaska Science Center, 1993-2012. The majority of surgeries were to implant intracoelomic tracking transmitters, but a subset were to collect liver biopsy samples. The data sheets provide information about individual surgeries, including: data about each bird, the timing of steps during each operation, admi

This dataset contains the growth index from annual growth bands in the shells of two bivalve clam species (Astarte borealis and Liocyma fluctuosa) captured in the Chukchi Sea, Alaska. The growth index is based on a measurement of the annual growth increment width that has been detrended for age-related differences in growth.

This data set consists of one table containing whole-rock geochemistry data for 753 igneous and metamorphic rocks from the Yukon-Tanana upland of eastern interior Alaska, collected between 2013 and 2019. All materials were analyzed by ALS Global, between 2014 and 2020, by a range of different techniques, so multiple unique entries for a given element relate to different analytical methods or prepa

This dataset contains measurements of oxygen consumption and carbon dioxide production of 3 adult female walruses (Odobenus rosmarus divergens) while resting and diving at the Oceanografic Aquarium in Valencia, Spain. Oxygen consumption and carbon dioxide production was measured for walruses via a respiratory dome while resting at the water surface and after swimming and diving.

Since the late 1950s, the USGS has maintained a long-term glacier mass-balance program at three North American glaciers. Measurements began on South Cascade Glacier, WA in 1958, expanding to Gulkana and Wolverine glaciers, AK in 1966, and later Sperry Glacier, MT in 2005. Additional measurements have been made on Lemon Creek Glacier, AK to compliment data collected by the Juneau Icefield Research