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Time-lapse seismic study of levees in southern New Mexico

SEG Technical Program Expanded Abstracts

By:
, , , , , and
DOI: 10.1190/1.2370207

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Abstract

The primary objective of this work was to measure changes in compressional- (Vp) and shear-wave (Vs) velocities in an earthen levee during a ponding experiment designed to simulate flood conditions on the Rio Grande in south New Mexico. Although similar to such experiment, performed an year earlier on the Rio Grande in south Texas, the levee seismic response results are different. This work was similar to previous Preliminary testing at three levee sites, all within a 1 km radius and each with unique physical, EM, and core characteristics, was completed and a single low-conductivity, highly fractured site was selected for investigation. Several different types of seismic data were recorded. Seismic data analysis techniques appraised included P-refraction tomography and Rayleigh surface-wave analysis using multichannel analysis of surface waves (MASW). P-wave velocity change (decrease) was rapid and isolated to one section within the pool confines, which already had anomalously high velocity most likely related to burrowing animals modification of the levee structure. S-wave velocity change was gradual and could be observed along the whole width of the pond within and below the levee. The results within the levee sand core were consistent with the observations of sand S-wave velocity changed due to saturation. ?? 2005 Society of Exploration Geophysicists.

Additional Publication Details

Publication type:
Article
Publication Subtype:
Journal Article
Title:
Time-lapse seismic study of levees in southern New Mexico
Series title:
SEG Technical Program Expanded Abstracts
DOI:
10.1190/1.2370207
Volume
25
Issue:
1
Year Published:
2006
Language:
English
Larger Work Type:
Article
Larger Work Subtype:
Journal Article
Larger Work Title:
SEG Technical Program Expanded Abstracts
First page:
3255
Last page:
3259