David A. Ponce Gravity Base Stations--Western U.S.)

Gravity Base Stations

World Relative Gravity Reference Network (WRGRN)

IGSN71 Gravity Datum

All files are PDF's

WRGRN BASES
(Jablonski, 1970-74)

REVISED OR ADDITIONAL BASES

Western U.S. (Index map and IGSN71 listing included. Some annotated.)
Alaska (31.9 Mb).	Alaska (Saltus et al., 2008)
Arizona (12.3 Mb).	---
California (6.7 Mb).	California (0.6 Mb)
	So. Calif. Network (Roberts and Jachens, 1986) (6.7 Mb)
Colorado (7.7 Mb).	---
Idaho (1.7 Mb).	---
Montana (13.7 Mb).	---
Nevada (3.5 Mb).	Nevada (1.6 Mb)
	Southwest Nevada (Harris et al., 1988) (8.7 Mb)
New Mexico (13.8 Mb).	---
Oregon (4.2 Mb).	Oregon (Morin, 2007) (0.6 Mb).
Utah (2.0 Mb).	---
Washington (7.8 Mb).	---
Wyoming (11.0 Mb).	---

Central America (Index map and IGSN71 listing included. Some annotated.)
Costa Rica (1.7 Mb).	Costa Rica (0.4 Mb).

ALL WRGRN BASES IN ORIGINAL ACIC# ORDER Note: Observed gravity values shown on the WRGRN base station sheets are on the 1930 Postdam gravity datum. IGSN71 values are in a separate cross reference list that is provided.
	Preface (6.5 Mb).	IGSN71 Values (35.2 Mb).
Africa (56.3 Mb).	Anarctica (10.5 Mb).	Asia (53.7 Mb).	Atlantic Ocean (2.5 Mb).
Australia (10.4 Mb).	Canada (46.8 Mb).	Central America (10.9 Mb).	CONUS (191.5 Mb).
Europe (69.5 Mb).	Mexico (32.3 Mb).	Pacific Ocean (13.9 Mb).	South America (60.1 Mb).
West Indies (13.9 Mb).

GRAVITY METER CALIBRATION LOOPS
Charleston Peak, Nevada	Description (Ponce and Oliver, 1981) (2.7 Mb).
Mt Hamilton, California	Eos article (Barnes et al, 1969) (1.5 Mb).
	Description (1.4 Mb).

References:
Barnes, D.F., Oliver, H.W., and Robbins, S.L., 1969, Standardization of gravimeter calibrations in the Geological Survey: EOS (Transactions, American Geophysical Union), v. 50, p. 526-527.

Harris, R.N., Ponce, D.A., Healey, D.L., and Oliver, H.W., 1989, Principal facts for about 16,000 gravity stations in the Nevada Test Site and vicinity: U.S. Geological Survey Open-File Report 89-682A, Documentation, 78 p; 89-682B, data listing, 286 p.; and 89-682C, Diskettes, 2 diskettes.

Jablonski, H.M., 1970-74, World relative gravity reference network: U.S. Defense Mapping Agency Aerospace Center Reference Publication no. 25, with supplement of IGSN 71 gravity datum values, variously paged.

Morin, Robert L., Wheeler, Karen L., McPhee, Darcy K., Dinterman, Philip A., and Watt, Janet T., 2007, Principal facts of gravity data in the northern Willamette Valley and vicinity, northwestern Oregon and southwestern Washington: U.S. Geological Survey Open-File Report 2007-1058. http://pubs.usgs.gov/of/2007/1058/

Ponce, D. A., and Oliver, H. W., 1981, Charleston Peak gravity calibration loop, Nevada: U.S. Geological Survey Open-File Report 81-985, 20 p.

Roberts, C.W., Jachens, R.C., 1986, High-precision gravity stations for monitoring vertical crustal motion in southern California: U.S. Geological Survey Open-File Report 86-44, 76 p.

Saltus, R.W., Brown, P.J. II, Morin, R.L., and Hill, P.L., 2008, 2006 compilation of Alaska gravity data and historical reports: U.S. Geological Survey Digital Series 264, CD-ROM.

Links:
National Geodetic Survey (NGS)
Gravity base stations from PACES (Pan-American Center for Earth and Environmental Studies)
Bureau Gravimetrique International(BGI)
USGS Geophysical Data Products

Compiled by the Geophysics Unit of Menlo Park (GUMP). For additional information contact:
David A. Ponce MS 989 U.S. Geological Survey 345 Middlefield Rd., Menlo Park, CA 94025 ponce@usgs.gov	Daniel S Scheirer MS 989 U.S. Geological Survey 345 Middlefield Rd., Menlo Park, CA 94025 dscheirer@usgs.gov

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