Found 60 datasets matching "1950s".
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The 1950s images were downloaded from Earth Explorer as medium-resolution scans of aerial photographs, with pixel size ranging from 1.33 to 2.32 m. Original photo scales were 1:54,000 or 1:20,000....
Search relevance: 100.76 | Views last month: 2 -
Breton Island, Louisiana Transects with Shoreline Change Rates (Post-1950s) (Geographic, NAD83) consists of vector transect data that were derived from the Digital Shoreline Analysis System (DSAS)...
Search relevance: 94.00 | Views last month: 1 -
Breton Island, Louisiana Transects with Shoreline Change Rates (Pre-1950s) (Geographic, NAD83) consists of vector transect data that were derived from the Digital Shoreline Analysis System (DSAS)...
Search relevance: 93.24 | Views last month: 0 -
The glaciers for the southwest Alaska park units were derived from the NHD database. The "Ice-mass" was reselected and dissolved to create one feature class for all glaciers.
Search relevance: 80.93 | Views last month: 0 -
Geomorphic features mapped from historical aerial photographs (1935, 1950s, 1970s, and 1996), satellite imagery (November 2006), and digital aerial imagery (Standard Imagery LiDAR Composite;...
Search relevance: 67.59 | Views last month: 0 -
This dataset provides groundwater ages estimates that were used in an assessment of the penetration depth of modern groundwater in the Central Valley aquifer system (CVAL). Groundwater ages were...
Search relevance: 50.04 | Views last month: 0 -
A suite of morphological metrics were derived from existing shoreline and elevation datasets for barrier islands and spits located along the north-slope coast of Alaska between Cape Beaufort and...
Search relevance: 39.05 | Views last month: 0 -
The NMFS Alaska Fisheries Science Center National Marine Mammal Laboratory (NMML) Marine Mammal Osteology Collection consists of approximately 2500 specimens (skulls and post-cranial skeletons)...
Search relevance: 37.16 | Views last month: 0 -
A suite of morphological metrics were derived from existing shoreline and elevation datasets for barrier islands and spits located along the north-slope coast of Alaska between Cape Beaufort and...
Search relevance: 36.71 | Views last month: 0 -
This map shows the average number of days per year in which coastal waters rose above the local threshold for minor flooding at 33 sites along the U.S. coast. Each small bar graph compares the...
Search relevance: 36.11 | Views last month: 0 -
The NMFS Alaska Fisheries Science Center National Marine Mammal Laboratory (NMML) Marine Mammal Osteology Collection consists of approximately 2500 specimens (skulls and post-cranial skeletons)...
Search relevance: 35.91 | Views last month: 1 -
The Historical Arctic Rawinsonde Archive (HARA) contains millions of vertical soundings of temperature, pressure, humidity, and wind, representing all available rawinsonde ascents from Arctic land...
Search relevance: 35.47 | Views last month: 1 -
This data set is a 1:15 million scale forest cover map for the land area of the Former Soviet Union. Twenty-two land cover classes are distinguished, of which 20 are forest cover classes. The...
Search relevance: 35.47 | Views last month: 0 -
The Platforms of Opportunity Program (POP) is an opportunistic marine mammal sighting program that dates back to the 1950s and includes over 108,000 sightings. Sightings have been submitted by a...
Search relevance: 32.24 | Views last month: 1 -
The ROCKFISH database houses data from rockfish species collected by the SWFSC FED along the California coast as part of a reproductive study originating in the winter of 2009 to assess spatial,...
Search relevance: 30.36 | Views last month: 1 -
Kaneohe Bay received increasing amounts of sewage from the 1950s through 1977. Most sewage was diverted from the bay in 1977 and early 1978. Data were collected beginning in September 1976 and...
Search relevance: 30.06 | Views last month: 0 -
Kaneohe Bay received increasing amounts of sewage from the 1950s through 1977. Most sewage was diverted from the bay in 1977 and early 1978. Data were collected beginning in September 1976 and...
Search relevance: 29.52 | Views last month: 0 -
This legacy database lists occurrences of minerals identified in the Green River Formation in the Uinta and Piceance Basins, Utah and Colorado using X-ray diffraction (XRD). The database was...
Search relevance: 29.52 | Views last month: 0 -
Everglades National Park (EVER), established in 1947, and Big Cypress National Preserve (BICY), established in 1974, are two large conservation areas managed by the National Park Service (NPS) in...
Search relevance: 29.04 | Views last month: 5 -
Coral reefs on the islands of Kauaʻi, Molokaʻi, Maui, Hawaiʻi and Oʻahu were surveyed for the presence and impact of marine nonindigenous and cryptogenic species (NIS) using a rapid assessment...
Search relevance: 28.41 | Views last month: 0
