Seismic, side-scan survey, diving, and coring data analyzed by a Macintosh II sup TM computer and inexpensive software provide answers to a possible offshore extension of landslides at Palos Verdes Peninsula, California

Conference · Tue May 01 00:00:00 EDT 1990 · AAPG Bulletin (American Association of Petroleum Geologists); (USA)

OSTI ID:6754975

Dill, R F ^[1]; Slosson, J E ^[2]; McEachen, D B ^[3]

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1. Dill GeoMarine Consultants, San Diego, CA (USA)
2. Slosson and Associates, Van Nuys, CA (USA)
3. RockWare Inc., Wheat Ridge, CO (USA)

A Macintosh II{sup TM} computer and commercially available software were used to analyze and depict the topography, construct an isopach sediment thickness map, plot core positions, and locate the geology of an offshore area facing an active landslide on the southern side of Palos Verdes Peninsula California. Profile data from side scan sonar, 3.5 kHz, and Boomer subbottom, high-resolution seismic, diving, echo sounder traverses, and cores - all controlled with a mini Ranger II navigation system - were placed in MacGridzo{sup TM} and WingZ{sup TM} software programs. The computer-plotted data from seven sources were used to construct maps with overlays for evaluating the possibility of a shoreside landslide extending offshore. The poster session describes the offshore survey system and demonstrates the development of the computer data base, its placement into the MacGridzo{sup TM} gridding program, and transfer of gridded navigational locations to the WingZ{sup TM} data base and graphics program. Data will be manipulated to show how sea-floor features are enhanced and how isopach data were used to interpret the possibility of landslide displacement and Holocene sea level rise. The software permits rapid assessment of data using computerized overlays and a simple, inexpensive means of constructing and evaluating information in map form and the preparation of final written reports. This system could be useful in many other areas where seismic profiles, precision navigational locations, soundings, diver observations, and core provide a great volume of information that must be compared on regional plots to develop of field maps for geological evaluation and reports.

• OSTI ID: 6754975
• Report Number(s): CONF-900605-; CODEN: AABUD
• Journal Information: AAPG Bulletin (American Association of Petroleum Geologists); (USA), Vol. 74:5; Conference: Annual convention and exposition of the American Association of Petroleum Geologists, San Francisco, CA (USA), 3-6 Jun 1990; ISSN 0149-1423
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
58 GEOSCIENCES
SEISMIC SURVEYS
DATA ANALYSIS
APPLE COMPUTERS
CALIFORNIA
COMPUTER CODES
DRILL CORES
OFFSHORE SITES
QUATERNARY PERIOD
CENOZOIC ERA
COMPUTERS
ELECTRONIC CIRCUITS
FEDERAL REGION IX
GEOLOGIC AGES
GEOPHYSICAL SURVEYS
MICROELECTRONIC CIRCUITS
MICROPROCESSORS
NORTH AMERICA
SURVEYS
USA
020200* - Petroleum- Reserves
Geology
& Exploration
580000 - Geosciences