Accession Number:

ADA409367

Title:

Geologic Adaptation for Seismic Network Tracking

Descriptive Note:

Corporate Author:

COLD REGIONS RESEARCH AND ENGINEERING LAB HANOVER NH

Report Date:

2000-10-01

Pagination or Media Count:

12.0

Abstract:

We demonstrate a practical method for automatically adapting a network of seismic unattended UGSs to their specific geologic setting. The demonstration relies on data generated from high-fidelity 3D seismic simulations of a moving vehicle traversing a complex terrain having heterogeneous geology, and significant topographic relief. The simulated data, allows an arbitrary deployment of sensor nodes to form a network. Importantly, the simulated data shows realistic variations in character with as much as 40 dB of signal power variation between hard-rock materials and thick soils. The presence of large lateral geologic contrasts also produces significant deflections in surface wave raypaths and extensive regions with very low surface wave spatial coherence. These conditions present notably difficult problems for UGS tracking methods.

Subject Categories:

  • Geology, Geochemistry and Mineralogy
  • Seismology

Distribution Statement:

APPROVED FOR PUBLIC RELEASE