University of Miami GPS Volcano Monitoring Data on Surface Deformation: Available via Internet

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Identification_Information:
Citation:
Citation_Information:
Originator: Unknown
Publication_Date: Unknown
Title: University of Miami GPS Volcano Monitoring Data on Surface Deformation: Available via Internet
Description:
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.
Purpose:
Not Available
Supplemental_Information:
REFERENCE: Bock, Y., Continuous monitoring of crustal deformation, GPS World, 40-47, June, 1991.
Supplemental_Information:
REFERENCE: 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.
Supplemental_Information:
REFERENCE: 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.
Supplemental_Information:
REFERENCE: 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.
Supplemental_Information:
REFERENCE: 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.
Supplemental_Information:
REFERENCE: 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.
Supplemental_Information:
REFERENCE: 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.
Supplemental_Information:
REFERENCE: 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).
Supplemental_Information:
REFERENCE: 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.
Supplemental_Information:
REFERENCE: 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.
Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 19940401
Ending_Date: Unknown
Currentness_Reference:Unknown
Status:
Progress: Complete
Maintenance_and_Update_Frequency: As needed
Spatial_Domain:
Description_of_Geographic_Extent:
Bounding_Coordinates:
West_Bounding_Coordinate: -119.0
East_Bounding_Coordinate: -118.0
North_Bounding_Coordinate: 38.0
South_Bounding_Coordinate: 37.0
Keywords:
Theme:
Theme_Keyword_Thesaurus: GCMD SCIENCE PARAMETERS
Theme_Keyword_Thesaurus: GCMD INSTRUMENT
Theme_Keyword_Thesaurus: ANCILLARY KEYWORDS
Theme_Keyword_Thesaurus: ISO TOPIC CATEGORY
Theme_Keyword_Thesaurus: DATA SET LANGUAGE
Theme_Keyword: EARTH SCIENCE > SOLID EARTH > GRAVITY/GRAVITATIONAL FIELD > CRUSTAL MOTION
Theme_Keyword: EARTH SCIENCE > SOLID EARTH > GRAVITY/GRAVITATIONAL FIELD > SATELLITE ORBITS/REVOLUTION
Theme_Keyword: EARTH SCIENCE > SOLID EARTH > GEOTHERMAL DYNAMICS > GEOTHERMAL ENERGY
Theme_Keyword: EARTH SCIENCE > SOLID EARTH > TECTONICS > PLATE TECTONICS > STRAIN
Theme_Keyword: EARTH SCIENCE > SOLID EARTH > TECTONICS > PLATE TECTONICS > STRESS
Theme_Keyword: EARTH SCIENCE > SOLID EARTH > TECTONICS > PLATE TECTONICS > LITHOSPHERIC PLATE MOTION > CRUSTAL DEFORMATION
Theme_Keyword: GPS > GLOBAL POSITIONING SYSTEM
Theme_Keyword: Active
Theme_Keyword: Casa
Theme_Keyword: Geodsey
Theme_Keyword: Gps
Theme_Keyword: Idn_node Gsfc/umiami
Theme_Keyword: Internet
Theme_Keyword: Krakatau
Theme_Keyword: Long Valley Caldera
Theme_Keyword: Mojave
Theme_Keyword: Rsmas
Theme_Keyword: Surface Strain
Theme_Keyword: Volcano
Theme_Keyword: GEOSCIENTIFIC INFORMATION
Theme_Keyword: ENGLISH
Place:
Place_Keyword_Thesaurus: GCMD
Place_Keyword: SOLID EARTH > CRUST
Place_Keyword: CONTINENT > NORTH AMERICA > UNITED STATES OF AMERICA > CALIFORNIA > MAMMOTH LAKES
Access_Constraints: Not Available
Use_Constraints:
Not Available
Point_of_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: JACQUELINE E. DIXON
Contact_Position: TECHNICAL CONTACT
Contact_Address:
Address_Type: Mailing and Physical Address
Address: University of Miami (RSMAS)
Address: 4600 Rickenbacker Causeway
City: Miami
State_or_Province: FL
Postal_Code: 33149
Country: USA
Contact_Facsimile_Telephone: 305 361 4632
Contact_Electronic_Mail_Address: jdixon@rsmas.miami.edu
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Data_Quality_Information:
Attribute_Accuracy:
Attribute_Accuracy_Report:
Not Available
Logical_Consistency_Report:
Not Available
Completeness_Report:
Not Available
Lineage:
Process_Step:
Process_Description:
Not Available
Process_Date: Unknown
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Spatial_Reference_Information:
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Distribution_Information:
Distributor:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: U-MIAMI/RSMAS/MGGD/GEOD-L > Geodesy Laboratory, Marine Geology and Geophysics Division, Rosenstiel School of Marine and Atmospheric Science, University of Miami
Contact_Person: TIMOTHY H. DIXON
Contact_Position: DATA CENTER CONTACT
Contact_Address:
Address_Type: Mailing and Physical Address
Address: University of Miami (RSMAS)
Address: 4600 Rickenbacker Causeway
City: Miami
State_or_Province: FL
Postal_Code: 33149
Country: USA
Contact_Voice_Telephone: 305 361 4660
Contact_Facsimile_Telephone: 305 361 4632
Contact_Electronic_Mail_Address: tim@corsica.rsmas.miami.edu
Resource_Description: UMIAMI_GPS_VOLCANO
Distribution_Liability:
Not Available
Standard_Order_Process:
Digital_Form:
Digital_Transfer_Information:
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name:
http://www.geodesy.miami.edu/
Access_Instructions:
DATA CENTER URL
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name:
http://www.geodesy.miami.edu/volcano_monitoring.ht...
Access_Instructions:
Volcano Monitoring and Deformation research page.
Fees: Not Available
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Metadata_Reference_Information:
Metadata_Date: 20000914
Metadata_Review_Date: 20061016
Metadata_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: GENE R. MAJOR
Contact_Position: DIF AUTHOR
Contact_Address:
Address_Type: Mailing and Physical Address
Contact_Electronic_Mail_Address: gsfc-gcmduso@mail.nasa.gov
Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata
Metadata_Standard_Version: FGDC-STD-001-1998
Metadata_Time_Convention: local time
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