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University of Miami GPS Volcano Monitoring Data on Surface Deformation: Available via Internet Entry ID: UMIAMI_GPS_VOLCANO |
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Summary
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Abstract:
University of Miami GPS volcano monitoring data on surface deformation: available via Internet GPS volcano monitoring data is available from the University of Miami ftp site: corsica.rsmas.miami.edu in directory /pub Additional information about data holdings, related research and relevant imagery and data are made available at the following URL: "http://www.geodesy.miami.edu/" The following information about the data sets was abstracted from the README file located in the /pub directory of the FTP site: This directory contains "quick-look" GPS results for the permanent station CASA at Mammoth Lakes, California, located near the top of the resurgent dome at the USGS 2 color laser facility. The data begin April 20, 1994. Results were obtained with the GIPSY software developed at JPL. We give absolute as well as relative positions for 3 sites: CASA, Goldstone (id. GOLD) and Quincy (id. QUIN). The reference frame is ITRF92. Distances are given in meters, latitude and longitude in degrees, but all formal errors are in meters. Directory Content : - CASA.XYZ, GOLD.XYZ, QUIN.XYZ : X, Y, Z Coordinates and their errors. - CASA.GC : Geocentric Coordinates, Longitude, Latitude, Radial Height (from the earth's center of mass) and their errors. - QUINCASA.NEV, GOLDCASA.NEV : Relative baseline components (north, east, vertical) of the second site with respect to the first site, plus corresponding errors and their correlations. The first entry after the "+-" is the error; entries to the right of the error are the correlations. - STATION.DIFF : Differences between daily results and official ITRF92 coordinates for selected sites mapped to epoch. This gives an indication of the accuracy of the results. Strategy used in the analysis : - The zenith wet troposphere delay is estimated every 6 minutes and modelled as a random walk stochastic process (Dixon et al., 1991). - Carrier phase cycle ambiguities (biases) are estimated, not fixed. - No fiducial (fixed) sites are used in the analysis. Rather, results are transformed into the ITRF92 reference frame using 6 to 10 collocated sites, following the approach of Heflin et al. (1992) and Blewitt et al. (1992). - Prior to June 1, 1994, IGS precise orbits were used, and 12-15 stations were analyzed daily. - Beginning June 1, 1994, data editing was improved, and an average of 20 stations were included in the analysis; we continued to use IGS precise orbits until June 30, 1994. - Beginning July 1, 1994, satellite orbits are estimated simultaneously with station positions to facilitate production of near real-time results, and the number of stations included in the daily analysis increased to an average of 25. - Prior to January 31, 1995, only phase data are used (no P-code) due to Anti-Spoofing (A/S). We began to use P-code from Feb. 1, 1995, and changed to use P-code observations just from some sites with good quality on Feb. 24, 1995. - On Feb. 1, 1995 the elevation cutoff angle of observations changed from 20 degrees to 15 degrees. - From March 3, 1995, corrections of antenna phase center variations are included in our analysis. |
Related URL
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Link:
VIEW PROJECT HOME PAGE
Description: Volcano Monitoring and Deformation research page. |
Geographic Coverage
| N: 38.0 | S: 37.0 | E: -118.0 | W: -119.0 |
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Temporal Coverage
| Start Date: 1994-04-01 |
Location Keywords
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SOLID EARTH
> CRUST
CONTINENT > NORTH AMERICA > UNITED STATES OF AMERICA > CALIFORNIA > Mammoth Lakes |
Science Keywords
| SOLID EARTH >GRAVITY/GRAVITATIONAL FIELD >CRUSTAL MOTION [Definition] |
| SOLID EARTH >GRAVITY/GRAVITATIONAL FIELD >SATELLITE ORBITS/REVOLUTION [Definition] |
| SOLID EARTH >GEOTHERMAL DYNAMICS >GEOTHERMAL ENERGY [Definition] |
| SOLID EARTH >TECTONICS >PLATE TECTONICS >STRAIN [Definition] |
| SOLID EARTH >TECTONICS >PLATE TECTONICS >STRESS [Definition] |
| SOLID EARTH >TECTONICS >PLATE TECTONICS >LITHOSPHERIC PLATE MOTION >CRUSTAL DEFORMATION [Definition] |
ISO Topic Category
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GEOSCIENTIFIC INFORMATION
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Instrument
| GPS >Global Positioning System [Information] |
Keywords
| ACTIVE |
| CASA |
| GEODSEY |
| GPS |
| IDN_NODE GSFC/UMIAMI |
| INTERNET |
| KRAKATAU |
| LONG VALLEY CALDERA |
| MOJAVE |
| RSMAS |
| SURFACE STRAIN |
| VOLCANO |
Originating Center
| UMIAMI |
Data Center
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Geodesy Laboratory, Marine Geology and Geophysics Division, Rosenstiel School of Marine and Atmospheric Science, University of Miami
[Information]
Data Center URL: http://www.geodesy.miami.edu/ Dataset ID: UMIAMI_GPS_VOLCANO
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Distribution
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Distribution_Media:
ONLINE
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Personnel
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JACQUELINE
E.
DIXON Role: TECHNICAL CONTACT Fax: 305 361 4632 Email: jdixon at rsmas.miami.edu Contact Address: University of Miami (RSMAS) 4600 Rickenbacker Causeway City: Miami Province or State: FL Postal Code: 33149 Country: USA |
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GENE
R.
MAJOR Role: DIF AUTHOR Email: gsfc-gcmduso at mail.nasa.gov |
Publications/References
Bock, Y., Continuous monitoring of crustal deformation, GPS World, 40-47, June, 1991.
Dixon, T. H., et al., 1995, GPS Monitoring Data for Active Volcanoes
Available on Internet, EOS: Transactions of the American Geophysical Union 76, page 2.
Dixon, T.H., M. Bursik, S. Kornreich Wolf, M. Heflin, F. Webb, F. Farina, S. Robaudo, Constraints on deformation of the resurgent dome, Long Valley caldera, California from space geodesy, in Space Geodesy and Geodynamics, D. Smith and D. Turcotte, eds., American Geophysical Union Geodynamics Series v. 23, 193-214, 1993.
Dixon, T. et al., 1991, First epoch geodetic measurements with the Global Positioning System across the northern Caribbean plate boundary
zone, J. Geophys. Res., 96, 2397-2415.
Hill, D.P., R.A. Bailey and A. S. Ryall, Active tectonic and magmatic processes beneath Long Valley caldera, eastern California: an overview, J. Geophys. Res., 90, 11,111-11,120, 1985.
Langbein, J.O., D.P. Hill, T.N. Parker, S.K. Wilkinson, An episode of re-inflation of the Long Valley Caldera, eastern California; 1989-1991, J. Geophys. Res., 98, 15,851-15,870,
1993.
Romanowicz, B., D. Neuhauser, B. Bogaert and D. Oppenheimer, Accessing northern California earthquake data via Internet, EOS: Trans. Am. Geophys. U., 75, 257-259, 1994.
Webb, F., M. Bursik, T. Dixon, R. Stein, G. Marshall, Deformation at Long Valley from one year of continuous GPS measurements, Geophys. Res. Lett. (In Press, 1994).
Yamashita, K.M., J Kleinman, E. Iwatsubo, J. Ewart, D. Dzurisin, J. Rundle, R. Stein, Results of 1992 leveling survey at Long Valley
caldera, California, EOS: Trans. Am. Geophys. U., 73, 347, 1992.
Zumberge, J.F., R. Liu, R. Neilan, The International GPS Service for Geodynamics, Central Bureau Information System, EOS: Trans. Am. Geophys. U., 75, 103, 1994.
Dixon, T. H., et al., 1995, GPS Monitoring Data for Active Volcanoes
Available on Internet, EOS: Transactions of the American Geophysical Union 76, page 2.
Dixon, T.H., M. Bursik, S. Kornreich Wolf, M. Heflin, F. Webb, F. Farina, S. Robaudo, Constraints on deformation of the resurgent dome, Long Valley caldera, California from space geodesy, in Space Geodesy and Geodynamics, D. Smith and D. Turcotte, eds., American Geophysical Union Geodynamics Series v. 23, 193-214, 1993.
Dixon, T. et al., 1991, First epoch geodetic measurements with the Global Positioning System across the northern Caribbean plate boundary
zone, J. Geophys. Res., 96, 2397-2415.
Hill, D.P., R.A. Bailey and A. S. Ryall, Active tectonic and magmatic processes beneath Long Valley caldera, eastern California: an overview, J. Geophys. Res., 90, 11,111-11,120, 1985.
Langbein, J.O., D.P. Hill, T.N. Parker, S.K. Wilkinson, An episode of re-inflation of the Long Valley Caldera, eastern California; 1989-1991, J. Geophys. Res., 98, 15,851-15,870,
1993.
Romanowicz, B., D. Neuhauser, B. Bogaert and D. Oppenheimer, Accessing northern California earthquake data via Internet, EOS: Trans. Am. Geophys. U., 75, 257-259, 1994.
Webb, F., M. Bursik, T. Dixon, R. Stein, G. Marshall, Deformation at Long Valley from one year of continuous GPS measurements, Geophys. Res. Lett. (In Press, 1994).
Yamashita, K.M., J Kleinman, E. Iwatsubo, J. Ewart, D. Dzurisin, J. Rundle, R. Stein, Results of 1992 leveling survey at Long Valley
caldera, California, EOS: Trans. Am. Geophys. U., 73, 347, 1992.
Zumberge, J.F., R. Liu, R. Neilan, The International GPS Service for Geodynamics, Central Bureau Information System, EOS: Trans. Am. Geophys. U., 75, 103, 1994.
Creation and Review Dates
DIF Creation Date:
2000-09-14
Last DIF Revision Date:
2006-10-16
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