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Tephra occurrence in Alaska: a map-based compilation of stratigraphic tephra data
The principal hazard associated with future explosive eruptions of Alaska volcanoes is the generation of volcanic ash clouds which are explosively blasted high into the... -
U-Pb Zircon ages from bedrock samples collected in the Tanacross D-1, and...
This Alaska Division of Geological & Geophysical Surveys (DGGS) Preliminary Interpretive Report presents U-Pb ages of zircons from 14 sedimentary, metamorphic, and igneous... -
Photogrammetric digital surface models and orthoimagery for the continuous...
Aerial photographs of the coastline from Wales to Teller were collected on August 27, 2015 - August 28, 2015. The photographs were processed using Structure-from-Motion (SfM)... -
Spatially referenced oblique aerial imagery of the Port Heiden shoreline, August 2013
In August 2013, a helicopter-based crew photographed approximately 52 miles (84 km) of shoreline near Port Heiden, Alaska, from 7 miles (11 km) northeast of Reindeer Creek,... -
Geology of Kasatochi volcano, Aleutian Islands, Alaska
Kasatochi is a small, isolated island volcano in the center of the Aleutian Island chain. It consists of a roughly circular cone approximately 3 km in diameter with a lake-... -
Tsunami inundation maps for Adak and Atka, Alaska
We evaluate potential tsunami hazards for Adak and Atka by numerically modeling tsunami inundation generated by earthquakes along the Alaska-Aleutian subduction zone.... -
Geology of Kasatochi volcano, Aleutian Islands, Alaska
Kasatochi is a small, isolated island volcano in the center of the Aleutian Island chain. It consists of a roughly circular cone approximately 3 km in diameter with a lake-... -
Geologic Photos of Alaska
The Geologic Photos of Alaska database and online application contains photographs taken during and in support of Alaska Division of Geological & Geophysical Surveys (DGGS)... -
Photogrammetry-derived historical orthoimagery for Homer, Alaska from 1951,...
The State of Alaska Division of Geological & Geophysical Surveys (DGGS) used Structure-from-Motion (SfM) photogrammetry to produce orthoimagery for the City of Homer and... -
U-Pb detrital zircon geochronology of Cretaceous-Cenozoic sedimentary rocks...
This report presents U-Pb detrital zircon dates from three sedimentary rock samples collected in the eastern Tanacross Quadrangle during 2019 geologic mapping by the Alaska... -
Potential maximum permanent flooding for King Cove and Cold Bay communities, Alaska
This digital data distribution package provides post-earthquake shorelines for coastal areas near King Cove and Cold Bay, Alaska that become permanently flooded due to coseismic... -
Yukon River bridge landslide: Preliminary geologic and geotechnical evaluation
This report presents the findings of a geologic and geotechnical evaluation of a landslide at the Yukon River bridge (the E.L. Patton Bridge). The Yukon River bridge landslide... -
Regional tsunami hazard assessment for the communities of Kasaan, Klawock,...
We assess potential tsunami hazards for six communities in Southeast Alaska: Kasaan, Klawock, Metlakatla, Pelican, Point Baker, and Port Protection. These communities have no... -
Interpretive geologic bedrock map of the Tanana A-1 and A-2 quadrangles,...
Public Data File 98-37B v. 1.1, Interpretive geologic bedrock map of the Tanana A-1 and A-2 quadrangles, central Alaska, provides detailed (1:63,360-scale) geologic mapping of... -
Regional tsunami hazard assessment for Shemya, Alaska
We assess potential tsunami hazards for Eareckson Air Station on Shemya Island, Alaska. The primary tsunami hazard for this installation is considered to be near-field, with the...