Dataset Name

Okmok Volcano 2008

Bibliographic Reference

Larsen, J.F., Neal, C.A., Schaefer, J.R., Kaufman, A.M., and Lu, Zhong, 2015, The 2008 phreatomagmatic eruption of Okmok Volcano, Aleutian Islands, Alaska: Chronology, deposits, and landform changes: Alaska Division of Geological & Geophysical Surveys Report of Investigation 2015-2, 53 p. https://doi.org/10.14509/29405

Table of Contents

Layer Name: metadata
Layer Description: metadata files, read me files and reports
/metadata/RI2015-2.faq.html
/metadata/RI2015-2.txt
/metadata/RI2015-2.xml

Layer Name: alluvial-channels
Layer Description: Pre-eruption active alluvial and fluvial channels from field mapping and various source satellite imagery
/shapefiles/ri2015-2-alluvial-channels.dbf
/shapefiles/ri2015-2-alluvial-channels.prj
/shapefiles/ri2015-2-alluvial-channels.sbn
/shapefiles/ri2015-2-alluvial-channels.sbx
/shapefiles/ri2015-2-alluvial-channels.shp
/shapefiles/ri2015-2-alluvial-channels.shx

Layer Name: border
Layer Description: A polygon shapefile that provides a generalized outline of the geographic area described by this report.
/shapefiles/ri2015-2-border.dbf
/shapefiles/ri2015-2-border.prj
/shapefiles/ri2015-2-border.sbn
/shapefiles/ri2015-2-border.sbx
/shapefiles/ri2015-2-border.shp
/shapefiles/ri2015-2-border.shx

Layer Name: new-cone-crater-rim
Layer Description: Outline of new cone Ahmanilix's two crater rims, digitized from a September 22, 2008 Quickbird satellite image
/shapefiles/ri2015-2-new-cone-crater-rim.dbf
/shapefiles/ri2015-2-new-cone-crater-rim.prj
/shapefiles/ri2015-2-new-cone-crater-rim.sbn
/shapefiles/ri2015-2-new-cone-crater-rim.sbx
/shapefiles/ri2015-2-new-cone-crater-rim.shp
/shapefiles/ri2015-2-new-cone-crater-rim.shx

Layer Name: new-cone-region
Layer Description: Polygon depicting new cone Ahmanilix; digitized from a September 22, 2008 Quickbird satellite image. The base of cone was digitized from apparent break in slope as interpreted from the September 22, 2008 Quickbird image. Subsequent erosion has changed the shape of the cone dramatically.
/shapefiles/ri2015-2-new-cone-region.dbf
/shapefiles/ri2015-2-new-cone-region.prj
/shapefiles/ri2015-2-new-cone-region.sbn
/shapefiles/ri2015-2-new-cone-region.sbx
/shapefiles/ri2015-2-new-cone-region.shp
/shapefiles/ri2015-2-new-cone-region.shx

Layer Name: new-craters
Layer Description: Explosion crater rims and collapse crater rims as interpreted from fieldwork, post-eruption satellite images, and syn-eruption Synthetic Aperture Radar (SAR) imagery.
/shapefiles/ri2015-2-new-craters.dbf
/shapefiles/ri2015-2-new-craters.prj
/shapefiles/ri2015-2-new-craters.sbn
/shapefiles/ri2015-2-new-craters.sbx
/shapefiles/ri2015-2-new-craters.shp
/shapefiles/ri2015-2-new-craters.shx

Layer Name: new-pits
Layer Description: Polygons outlining syn-eruptive collapse pits; digitized from a September 22, 2008 Quickbird satellite image.
/shapefiles/ri2015-2-new-pits.dbf
/shapefiles/ri2015-2-new-pits.prj
/shapefiles/ri2015-2-new-pits.sbn
/shapefiles/ri2015-2-new-pits.sbx
/shapefiles/ri2015-2-new-pits.shp
/shapefiles/ri2015-2-new-pits.shx

Layer Name: new-vents
Layer Description: Approximate vent locations interpreted from fieldwork, post-eruption satellite images, and syn-eruption Synthetic Aperture Radar (SAR) imagery. Exact vent locations are uncertain, but are generally interpreted to lie within the region encompassed by the polygon feature.
/shapefiles/ri2015-2-new-vents.dbf
/shapefiles/ri2015-2-new-vents.prj
/shapefiles/ri2015-2-new-vents.sbn
/shapefiles/ri2015-2-new-vents.sbx
/shapefiles/ri2015-2-new-vents.shp
/shapefiles/ri2015-2-new-vents.shx

Layer Name: post-2008-eruption-lakes
Layer Description: Polygons outlining areas of surface water after the 2008 eruption; digitized from a September 22, 2008 Quickbird satellite image.
/shapefiles/ri2015-2-post-2008-eruption-lakes.dbf
/shapefiles/ri2015-2-post-2008-eruption-lakes.prj
/shapefiles/ri2015-2-post-2008-eruption-lakes.sbn
/shapefiles/ri2015-2-post-2008-eruption-lakes.sbx
/shapefiles/ri2015-2-post-2008-eruption-lakes.shp
/shapefiles/ri2015-2-post-2008-eruption-lakes.shx

Layer Name: pre-2008-eruption-lakes
Layer Description: Polygons outlining areas of surface water before the 2008 eruption; digitized from September 2000 IKONOS and August 2000 Landsat satellite imagery.
/shapefiles/ri2015-2-pre-2008-eruption-lakes.dbf
/shapefiles/ri2015-2-pre-2008-eruption-lakes.prj
/shapefiles/ri2015-2-pre-2008-eruption-lakes.sbn
/shapefiles/ri2015-2-pre-2008-eruption-lakes.sbx
/shapefiles/ri2015-2-pre-2008-eruption-lakes.shp
/shapefiles/ri2015-2-pre-2008-eruption-lakes.shx

Layer Name: stations
Layer Description: Field sites visited in August and September of 2008; locations were acquired with hand-held GPS units.
/shapefiles/ri2015-2-stations.dbf
/shapefiles/ri2015-2-stations.prj
/shapefiles/ri2015-2-stations.sbn
/shapefiles/ri2015-2-stations.sbx
/shapefiles/ri2015-2-stations.shp
/shapefiles/ri2015-2-stations.shx

Supplemental Information


 >border: A polygon shapefile that provides a generalized outline of the geographic area described by this report.
 >alluvial-channels: Pre-eruption active alluvial and fluvial channels from field mapping and various source satellite imagery
 >new-cone-crater-rim: Outline of new cone Ahmanilix's two crater rims, digitized from a September 22, 2008 Quickbird satellite image
 >new-cone-region: Polygon depicting new cone Ahmanilix; digitized from a September 22, 2008 Quickbird satellite image. The base of cone was digitized from apparent break in slope as interpreted from the September 22, 2008 Quickbird image. Subsequent erosion has changed the shape of the cone dramatically.
 >new-craters: Explosion crater rims and collapse crater rims as interpreted from fieldwork, post-eruption satellite images, and syn-eruption Synthetic Aperture Radar (SAR) imagery.
 >new-pits: Polygons outlining syn-eruptive collapse pits; digitized from a September 22, 2008 Quickbird satellite image.
 >new-vents: Approximate vent locations interpreted from fieldwork, post-eruption satellite images, and syn-eruption Synthetic Aperture Radar (SAR) imagery. Exact vent locations are uncertain, but are generally interpreted to lie within the region encompassed by the polygon feature.
 >post-2008-eruption-lakes: Polygons outlining areas of surface water after the 2008 eruption; digitized from a September 22, 2008 Quickbird satellite image.
 >pre-2008-eruption-lakes: Polygons outlining areas of surface water before the 2008 eruption; digitized from September 2000 IKONOS and August 2000 Landsat satellite imagery.
 >stations: Field sites visited in August and September of 2008; locations were acquired with hand-held GPS units.

Metadata

Metadata is the data about the data and answers "Who, what, when, where, how and why?" about the dataset. Please see the DGGS Metadata README page for information about our metadata.

Use Constraints

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Distribution Contact Information

Metadata Manager
Alaska Division of Geological & Geophysical Surveys
3354 College Road
Fairbanks, AK 99709-3707
Phone Number: (907)451-5020
Fax Number: (907)451-5050
E-mail: dggspubs@alaska.gov