Dataset Name

Okmok Volcano Hazards Basemap

Bibliographic Reference

Beget, J.E., Larsen, J.F., Neal, C.A., Nye, C.J., and Schaefer, J.R., 2005, Preliminary volcano-hazard assessment for Okmok Volcano, Umnak Island, Alaska: Alaska Division of Geological & Geophysical Surveys Report of Investigation 2004-3, 32 p., 1 sheet, scale 1:150,000.

Table of Contents

Layer Name: metadata
Layer Description: metadata, codesets, files not associated with a specific layer, or applicable to all layers

Layer Name: OKhazbase
Layer Description: Shaded relief image of NE Umnak Island, Alaska

Supplemental Information

This basemap is a modified version of Schaefer, Janet R., 2005, 30-meter shaded relief image of Okmok Volcano, Umnak Island, Alaska: Alaska Division of Geological & Geophysical Surveys Raw Data File RDF 2005-1, 1 CD. The bulk of the image is based on the SRTM data, but many data holes or shadows in the original SRTM data have been filled in with the AirSAR data to create a better display. Missing data appear as black pixels, especially in steep terrain. The SRTM data was collected during an 11-day mission in February 2000, and the AirSAR data was collected on October 17, 2000. Attribute information for the following layers (entities) is included in this metadata file under the "Entity_and_Attribution_Information" section. Each layer is listed and described in detail under its own heading starting "Entity_Type_Label." Layers include:
 >OKhazbase: basemap, modified from Schaefer, 2005, 30-meter shaded relief image of Okmok Volcano, Umnak Island, Alaska


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

Any hard copies or published datasets utilizing these datasets shall clearly indicate their source. If the user has modified the data in any way, the user is obligated to describe the types of modifications the user has made. The user specifically agrees not to misrepresent these datasets, nor to imply that changes made by the user were approved by the State of Alaska, Department of Natural Resources, Division of Geological & Geophysical Surveys. The State of Alaska makes no express or implied warranties (including warranties for merchantability and fitness) with respect to the character, functions, or capabilities of the electronic data or products or their appropriateness for any user's purposes. In no event will the State of Alaska be liable for any incidental, indirect, special, consequential, or other damages suffered by the user or any other person or entity whether from the use of the electronic services or products or any failure thereof or otherwise. In no event will the State of Alaska's liability to the Requestor or anyone else exceed the fee paid for the electronic service or product.

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