Skip Links

USGS - science for a changing world

Open-File Report 01-099

Global Positioning System (GPS) Survey of Augustine Volcano,Alaska, August 3-8,2000: Data Processing, Geodetic Coordinates and Comparison with Prior Geodetic Surveys

By Benjamin A. Pauk, John A. Power, Mike Lisowski, Dan Dzurisin, Eugene Y. Iwatsubo, and Tim Melbourne

Thumbnail of and link to report PDF (312 kMB)Introduction

Between August 3 and 8,2000,the Alaska Volcano Observatory completed a Global Positioning System (GPS) survey at Augustine Volcano, Alaska. Augustine is a frequently active calcalkaline volcano located in the lower portion of Cook Inlet (fig. 1), with reported eruptions in 1812, 1882, 1909?, 1935, 1964, 1976, and 1986 (Miller et al., 1998). Geodetic measurements using electronic and optical surveying techniques (EDM and theodolite) were begun at Augustine Volcano in 1986. In 1988 and 1989, an island-wide trilateration network comprising 19 benchmarks was completed and measured in its entirety (Power and Iwatsubo, 1998). Partial GPS surveys of the Augustine Island geodetic network were completed in 1992 and 1995; however, neither of these surveys included all marks on the island.Additional GPS measurements of benchmarks A5 and A15 (fig. 2) were made during the summers of 1992, 1993, 1994, and 1996.

The goals of the 2000 GPS survey were to:1) re-measure all existing benchmarks on Augustine Island using a homogeneous set of GPS equipment operated in a consistent manner, 2) add measurements at benchmarks on the western shore of Cook Inlet at distances of 15 to 25 km, 3) add measurements at an existing benchmark (BURR) on Augustine Island that was not previously surveyed, and 4) add additional marks in areas of the island thought to be actively deforming. The entire survey resulted in collection of GPS data at a total of 24 sites (fig. 1 and 2).

In this report we describe the methods of GPS data collection and processing used at Augustine during the 2000 survey. We use this data to calculate coordinates and elevations for all 24 sites surveyed. Data from the 2000 survey is then compared toelectronic and optical measurements made in 1988 and 1989. This report also contains a general description of all marks surveyed in 2000 and photographs of all new marks established during the 2000 survey (Appendix A).

First posted April 25, 2001

For additional information, contact:
Alaska Volcano Observatory (AVO)
U.S. Geological Survey
4230 University Drive
Anchorage, AK 99508

Part or all of this report is presented in Portable Document Format (PDF). For best results viewing and printing PDF documents, it is recommended that you download the documents to your computer and open them with Adobe Reader. PDF documents opened from your browser may not display or print as intended. Download the latest version of Adobe Reader, free of charge.


Suggested citation:

Pauk, Benjamin A., Power, John A., Lisowski, Mike, Dzurisin, Daniel, Iwatsubo, Eugene Y., Melbourne, Tim, 2001, Global Positioning System (GPS) Survey of Augustine Volcano,Alaska, August 3-8,2000: Data Processing, Geodetic Coordinates and Comparison with Prior Geodetic Surveys: U.S. Geological Survey Open-File Report 01-099, 20 pp., https://pubs.usgs.gov/of/2001/0099/.




Accessibility FOIA Privacy Policies and Notices

USA.gov logo U.S. Department of the Interior | U.S. Geological Survey
URL: https://pubs.usgs.gov/of/2001/0099/
Page Contact Information: Contact USGS
Page Last Modified: Wednesday, December 07, 2016, 06:56:41 PM