border: rectangular bounding outline of the data points volcano-locations: a shapefile of point data that provides the location and the year (when known) of the last major eruptive event for each volcano
Schaefer, J.R., Cameron, C.E., and Nye, C.J., 2011, Historically active volcanoes of Alaska: Miscellaneous Publication MP 133 v. 1.2, Alaska Division of Geological & Geophysical Surveys, Fairbanks, Alaska, United States.Online Links:
This is a point data set.
Horizontal positions are specified in geographic coordinates, that is, latitude and longitude. Latitudes are given to the nearest 0.000001. Longitudes are given to the nearest 0.000001. Latitude and longitude values are specified in decimal degrees.
The horizontal datum used is World Geodetic System of 1984.
The ellipsoid used is World Geodetic System of 1984.
The semi-major axis of the ellipsoid used is 6378137.
The flattening of the ellipsoid used is 1/298.257223563.
The volcano names chosen reflect the common use name used by staff at the Alaska Volcano Observatory. The names of the volcanoes in this dataset were taken from U.S. Geological Survey, 1:250,000-scale topographic maps. The names were modified by dropping terms such as "Mount" or "Peak."
| Value | Definition |
|---|---|
| NULL | Blank (NULL) field values indicate that the year of the last major eruptive event is unknown. |
| Range of values | |
|---|---|
| Minimum: | 1912 |
| Maximum: | 2014 |
| Units: | date |
Cartography by: J.R. Schaefer and P.E. Gallagher
(907)451-5020 (voice)
dggsgis@alaska.gov
The purpose of this dataset is to document the location and most recent eruptive events of the historically active volcanoes of Alaska.
Cameron, C.E., and Alaska Volcano Observatory Staff, 2013, Geologic Database of Information on Volcanoes in Alaska (GeoDIVA): Alaska Volcano Observatory, Fairbanks, AK.
Data sources used in this process:
Cameron, C.E., 2005, Latitudes and longitudes of volcanoes in Alaska: Raw Data File RDF 2005-3, Alaska Division of Geological & Geophysical Surveys, Fairbanks, Alaska, United States.Online Links:
Cameron, C.E., Triplehorn, J.H., and Robar, C.L., 2003, Bibliography of information on Alaska volcanoes: Miscellaneous Publication MP 131, Alaska Division of Geological & Geophysical Surveys, Fairbanks, Alaska, United States.Online Links:
Nye, C.J., 1995, Volcanoes of Alaska: Information Circular IC 38, Alaska Division of Geological & Geophysical Surveys, Fairbanks, Alaska, United States.Online Links:
Robbins, S.D., 2010, Active volcanoes of Kamchatka and northern Kurile Islands: Miscellaneous Publication MP 137, Alaska Division of Geological & Geophysical Surveys, Fairbanks, Alaska, United States.Online Links:
Snedigar, S.F., and Cameron, C.C., 2009, Historically active volcanoes of Alaska reference deck: Information Circular IC 59, Alaska Division of Geological & Geophysical Surveys, Fairbanks, Alaska, United States.Online Links:
The volcano names, date of last eruptive event, and location information in this dataset comes from the AVO website, www.avo.alaska.edu, accessed in December 2013. The volcano information on the AVO website is contained within a database and was compiled almost exclusively by Cheryl Cameron, and reviewed by staff of the Alaska Volcano Observatory. This database contains information on all published reports about Quaternary and younger Alaskan volcanism. The volcano names, locations, and eruptive history information found in the database is compiled by studying all locatable published documents. All of the locations were entered into the database, plotted in a GIS, and visually checked for accuracy. Where all published locations were inaccurate, new locations were generated by plotting a point within the GIS using a USGS digital topographic map.
Location values were compiled from existing published resources and plotted using a GIS to visually verify accuracy. Where published locations of volcanic features appeared inaccurate, new locations were generated by creating a point on USGS digital topographic maps (using the largest scale available, 1:63,000 or 1:250,000) within the GIS.
This data provides the locations of historically active volcanoes of Alaska and the year of the last major eruptive event. The 52 volcanoes listed meet at least one of the following criteria since 1700 CE: (1) documented, unquestioned eruption, or (2) a strongly suspected eruption, often an eruption documented in the historical account with very little information (current geologic knowledge must not contradict the eruption account), or (3) persistent (usually on the order of decades, but certainly longer than several months) fumaroles, with temperatures (where measured) within ~10 degrees C of the boiling point, or (4) significant, measured, volcanic-related, non-eruptive deformation, (5) documented earthquake swarm with strongly suspected volcanic cause. For the purposes of this dataset a major eruptive event is considered to be one in which juvenile lava erupt as a lava flow or dome or as an explosive column reaching an altitude of several thousand meters above the vent.
Not applicable
Are there legal restrictions on access or use of the data?
- Access_Constraints:
- This report, map, and/or dataset is available directly from the State of Alaska, Department of Natural Resources, Division of Geological & Geophysical Surveys (see contact information below).
- 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.
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dggspubs@alaska.gov
MP 133 v. 1.2
The State of Alaska makes no expressed 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.
DGGS publications are available as free online downloads or you may purchase paper hard-copies or digital files on CD/DVD or other digital storage media by mail, phone, fax, or email from the DGGS Fairbanks office. To purchase this or other printed reports and maps, contact DGGS by phone (907-451-5020), e-mail (dggspubs@alaska.gov), or fax (907-451-5050). Payment accepted: Cash, check, money order, VISA, or MasterCard. Turnaround time is 1-2 weeks unless special arrangements are made and an express fee is paid. Shipping charge will be the actual cost of postage and will be added to the total amount due. Contact us for the exact shipping amount.
| Data format: | Vector data shapefile |
|---|---|
| Network links: |
<http://dx.doi.org/10.14509/20181> |
(907)451-5020 (voice)