The long-term measurement of strong-motion earthquakes offshore southern California

Conference · Sun Jan 01 04:00:00 EST 1989

DOI:https://doi.org/10.4043/6336-MS· OSTI ID:7160677

Sleefe, G. E.

This paper describes a new long-life Seafloor Earthquake Measurement System (SEMS) and presents earthquake data obtained from the seafloor near an offshore oil production field. The SEMS is a battery-powered (8 year life) digital data acquisition system which telemeters data via a sonar link. Seafloor earthquake data from SEMS indicate that the seafloor vertical acceleration is nearly an order of magnitude weaker than the corresponding on-shore vertical motions. The importance of the SEMS measurements in designing earthquake-resistant offshore structures is also described. 13 refs., 6 figs., 1 tab.

• Research Organization: Sandia National Labs., Albuquerque, NM (USA)
• Sponsoring Organization: DOE/DP; DOI
• DOE Contract Number: AC04-76DP00789
• OSTI ID: 7160677
• Report Number(s): SAND-89-2297C; CONF-900507--1; ON: DE90007071
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020200* -- Petroleum-- Reserves
Geology
& Exploration
CALIFORNIA
COASTAL REGIONS
DATA ACQUISITION SYSTEMS
DETECTION
EQUIPMENT
EVALUATION
FEDERAL REGION IX
GEOLOGIC DEPOSITS
MEASURING INSTRUMENTS
MINERAL RESOURCES
NORTH AMERICA
OIL FIELDS
PETROLEUM DEPOSITS
PORTABLE EQUIPMENT
RESOURCES
SEA BED
SEISMIC ARRAYS
SEISMIC DETECTORS
SEISMIC EVENTS
SITE CHARACTERIZATION
SUBSURFACE STRUCTURES
USA