Analysis of the Goodnow, NY earthquake using RSTN data

Technical Report · Fri Jul 20 04:00:00 EDT 1984

OSTI ID:6664940

Taylor, S R

The Goodnow, NY earthquake of October 7, 1983 (m/sub b/ = 5.2) has been analyzed using P waves and Rayleigh waves recorded by the Regional Seismic Test Network (RSTN). The event occurred only 71 km from the station RSNY where seismogram clipping was observed on all three short-period and the mid-period vertical components for the L/sub g/ portion of the wavetrain. State-of-health information obtained from RSNY indicated that the seismometers did not clip, suggesting that the electronics in the passband shaping filters saturated. However, the P waves at RSNY appeared to be reliably recorded. This is confirmed by comparing P-wave moments from RSNY with those from the other RSTN stations obtained using both P waves and Rayleigh waves. The average P-wave moment (1.7 x 10/sup 23/) compares well with that estimated from the Rayleigh waves (2.1 x 10/sup 23/) and is in relatively good agreement with that obtained at RSNY (0.4 x 10/sup 23/). Synthetic seismograms calculated for RSNT are consistent with the fault geometry of Suarez et al. (1984). The focal mechanism was consistent with a N-S trending thrust, dipping 60/sup 0/W, at a depth of 7 km with a fault radius of approximately 1.5 km that ruptured towards the surface. Although strong ground motion from a large, local earthquake may cause portions of the RSTN seismograms to clip, the diagnostics contained in the downhole package will generally allow users to evaluate the reliability of the unclipped data. 15 references, 10 figures, 1 table.

• Research Organization: Lawrence Livermore National Lab., CA (USA)
• DOE Contract Number: W-7405-ENG-48
• OSTI ID: 6664940
• Report Number(s): UCID-20129; ON: DE84015487
• Country of Publication: United States
• Language: English

Related Subjects

58 GEOSCIENCES
580201* -- Geophysics-- Seismology & Tectonics-- (1980-1989)
ADIRONDACK MOUNTAINS
APPALACHIAN MOUNTAINS
DATA
DATA ANALYSIS
EARTHQUAKES
EXPERIMENTAL DATA
FEDERAL REGION II
INFORMATION
MEASURING INSTRUMENTS
MOUNTAINS
NEW YORK
NORTH AMERICA
NUMERICAL DATA
RAYLEIGH WAVES
SEISMIC ARRAYS
SEISMIC EVENTS
SEISMIC P WAVES
SEISMIC SURFACE WAVES
SEISMIC WAVES
USA