New York/New Jersey regional seismic network

Technical Report · Sun Sep 01 00:00:00 EDT 1991

OSTI ID:5053226

Seeber, L; Simpson, D; Johnson, D; Armbruster, J ^[1]

---

1. Columbia Univ., Palisades, NY (United States). Lamont-Doherty Geological Observatory

Lamont-Doherty Geological Observatory (L-DGO) continued operating a 31-station seismic network covering parts of New York and New Jersey. The network is being transformed into sub-networks with stations radio telemetered to smart'' recording stations. The sub-network approach is capable of providing improved data at reduced cost. The major research effort during the period of this report was centered about the Saguenay earthquake sequence in Quebec. L-DGO collaborated with the Canadian Geologic Survey in monitoring aftershocks with temporary local stations. Analysis of data from the 1985 Ardsley earthquake in Westchester county continued with a Green's function deconvolution approach to resolve the dimensions of the rupture of the main shock (Mb=4.0) and of the largest aftershock (Mb=3.0). The results corroborate the 1/2-1 km diameter inferred for the rupture and suggest that the segmentation of the Dobbs Ferry fault and of similar in the Manhattan Prong may be controlling the size of historic earthquakes in the New York City region. Finally, a portable seismograph survey was carried out in Palco, Kansas, which showed clearly that seismicity at Palco was induced. 51 refs,, 8 figs., 2 tabs.

• Research Organization: Nuclear Regulatory Commission, Washington, DC (United States). Div. of Engineering; Columbia Univ., Palisades, NY (United States). Lamont-Doherty Geological Observatory
• Sponsoring Organization: USNRC; Nuclear Regulatory Commission, Washington, DC (United States)
• OSTI ID: 5053226
• Report Number(s): NUREG/CR-5778-Vol.1; ON: TI92000240
• Country of Publication: United States
• Language: English

Related Subjects

58 GEOSCIENCES
47 OTHER INSTRUMENTATION
99 GENERAL AND MISCELLANEOUS//MATHEMATICS, COMPUTING, AND INFORMATION SCIENCE
EARTHQUAKES
MONITORING
NEW JERSEY
SEISMIC ARRAYS
NEW YORK
AFTERSHOCKS
ATTENUATION
BUDGETS
COMMUNICATIONS
COST
GREEN FUNCTION
INFORMATION SYSTEMS
KANSAS
MATHEMATICAL MODELS
MODIFICATIONS
PROGRESS REPORT
QUEBEC
SEISMIC DETECTION
SEISMIC EVENTS
SEISMIC SURVEYS
SEISMIC WAVES
SEISMICITY
SEISMOGRAPHS
SIGNALS
STRESSES
CANADA
DETECTION
DEVELOPED COUNTRIES
DOCUMENT TYPES
FEDERAL REGION II
FEDERAL REGION VII
FUNCTIONS
GEOPHYSICAL SURVEYS
MEASURING INSTRUMENTS
NORTH AMERICA
SEISMIC DETECTORS
SURVEYS
USA
580000* - Geosciences
440700 - Geophysical & Meteorological Instrumentation- (1990-)
990300 - Information Handling