Monitoring Crustal Deformation in Eastern Maine Using GPS
Publication: Journal of Surveying Engineering
Volume 115, Issue 1
Abstract
As a part of an ongoing study of crustal dynamics in New England, the University of Maine undertook a study of crustal subsidence in Eastern Maine. Previous studies have indicated a subsidence rates of the coastal region with respect to stable inland monuments of up to 9 mm/yr. These studies were based on the analysis of repeated leveling of first‐ and second‐order level lines in the region. The last epoch of releveling was completed in 1966. In order to continue monitoring this subsidence, a new network of stations traversing the area of suspected subsidence, including stations in stable areas, was established. Considering the time and cost of releveling, along with the precision requirements of the survey, GPS provides the only practical means for monitoring the subsidence network in an ongoing and timely manner. A total of 20 new and existing stations were combined to form the new subsidence network. The network design considerations in terms of the required precision of the resulting observations are discussed. Initial observation results and comparisons to prior subsidence rate estimates are provided.
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References
1.
Anderson, W., et al. (1984). “Crustal warping in Maine.” Geology, 12, 677–680.
2.
Engelis, T., and Bock, Y. (1984). “Measuring orthometric height differences with GPS and gravity data.” Presented at the AGU Chapman Conference: Vertical Crustal Motion Measurement and Modeling, Oct.
3.
Engelis, T., Rapp, R. H., and Tscherning, C. C. (1984). “The precise computation of geoid undulation differences with comparison to results obtained from the global positioning system.” Geophysical Research Letters, 11(9), 821–824.
4.
Hein, G. W., Leick, A., and Lambert, S. (1988). “Integrated processing of GPS and gravity data.” Presented at the ASCE Specialty Conference on Engineering Applications of GPS Satellite Surveying Technology, Nashville, Tenn., May 11–14.
5.
Jekeli, C. (1980). “Reducing the error of geoid undulation computations by modifying Stokes' function.” Reports of the Dept. of Geodetic Science, No. 301, Ohio State Univ., Columbus, Ohio.
6.
Lambert, S. R. (1987a). “Monitoring vertical crustal deformation in eastern Maine using GPS derived orthometric heights.” Report No. 71, Dept. of Civ. Engrg., Surveying Engrg. Program, Univ. of Maine, Orono, Maine.
7.
Lambert, S. R. (1987b). “MainePac II geoid undulation determination program.” Report No. 72, Dept. of Civ. Engrg., Surveying Engrg. Program, Univ. of Maine, Orono, Maine.
8.
Reilinger, R. (1987). “Reanalysis of crustal warping in coastal Maine.” Geology, 15, Oct., 958–961.
9.
Tyler, D. A., Ladd, J., and Boms, H. W. (1979). “Crustal subsidence in eastern Maine.” U.S. Nuclear Regulatory Commission, Washington, D.C. NUREG/CR‐0887, NRC FIN No. B5961.
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Copyright © 1989 ASCE.
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Published online: Feb 1, 1989
Published in print: Feb 1989
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