Digital elevation model (DEM) and shaded relief image of Okmok Caldera, 2010

In response to significant morphologic changes in Okmok Caldera due to the phreatomagmatic eruption of Okmok volcano in 2009, a new digital elevation model was acquired to document and quantitatively assess the new volcanic features and altered hydrology within the caldera. This DEM dataset provides elevation data derived from a stereo pair of Worldview-1 satellite images acquired on January 21, 2010. In addition to the DEM, a shaded-relief image is also provided for easy visualization of the data.

Data and Resources

Field Value
access_constraints ["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.", "Access Constraints: This content is available directly from the State of Alaska, Department of Natural Resources, Division of Geological & Geophysical Surveys (see contact information below)."]
bbox-east-long -167.98600000
bbox-north-lat 53.4890000
bbox-south-lat 53.2970000
bbox-west-long -168.300000
coupled-resource []
dataset-reference-date [{"type": "publication", "value": "2011-01-01"}]
frequency-of-update notPlanned
graphic-preview-description A low resolution jpg image file derived from the higher resolution tif shaded relief image okmok_shaded_relief.tif
graphic-preview-file http://www.dggs.alaska.gov/webpubs/dggs/rdf/thumbnails/rdf2011-6-okmok-shaded-relief-browse.jpg
graphic-preview-type JPEG
licence ["The State of Alaska makes no express or implied warranties (including warranties of merchantability and fitness) with respect to the character, function, or capabilities of the electronic services 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, any failure thereof, or otherwise, and in no event will the State of Alaska's liability to the requester or anyone else exceed the fee paid for the electronic service or product."]
metadata-date 2011-12-30
metadata-language eng; USA
metadata_type geospatial
progress completed
resource-type dataset
responsible-party [{"name": "Alaska Division of Geological & Geophysical Surveys", "roles": ["pointOfContact"]}]
spatial {"type": "Polygon", "coordinates": [[[-168.3, 53.297], [-167.986, 53.297], [-167.986, 53.489], [-168.3, 53.489], [-168.3, 53.297]]]}
spatial_harvester true
Groups
  • AmeriGEOSS
  • National Provider
  • North America
Tags
  • amerigeo
  • amerigeoss
  • ckan
  • digital-elevation-model
  • geo
  • geoss
  • national
  • north-america
  • okmok
  • okmok-caldera
  • okmok-volcano
  • shaded-relief
  • united-states
isopen False
metadata_created 2025-11-22T22:34:06.284704
metadata_modified 2025-11-22T22:34:06.284708
notes In response to significant morphologic changes in Okmok Caldera due to the phreatomagmatic eruption of Okmok volcano in 2009, a new digital elevation model was acquired to document and quantitatively assess the new volcanic features and altered hydrology within the caldera. This DEM dataset provides elevation data derived from a stereo pair of Worldview-1 satellite images acquired on January 21, 2010. In addition to the DEM, a shaded-relief image is also provided for easy visualization of the data.
num_resources 2
num_tags 13
title Digital elevation model (DEM) and shaded relief image of Okmok Caldera, 2010