LFASE Report: Crustal Study

The data set described in this report was collected on 150-154 Ma oceanic crust during the DARPA/Navy Low Frequency Acoustic Seismic Experiment (LFASE). This is some of the oldest lithosphere remaining in the modern oceans. The experiment used an array of airguns as a source and ocean bottom seismog...

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Bibliographic Details
Main Authors: Posiolova, Liliya V., Orcutt, John A.
Other Authors: SCRIPPS INSTITUTION OF OCEANOGRAPHY LA JOLLA CA INST OF GEOPHYSICS AND PLANETARY PHYSICS
Format: Text
Language:English
Published: 1993
Subjects:
Physical and Dynamic Oceanography
Acoustics
*SEISMIC DATA
*OCEANIC CRUST
*LITHOSPHERE
FREQUENCY
MODELS
SITES
STRUCTURES
AMPLITUDE
LOW FREQUENCY
TRAVEL TIME
SEISMOGRAPHS
OCEAN BOTTOM
NORTH ATLANTIC OCEAN
REFRACTION
RECEIVERS
WAVEFORMS
ARRAYS
BOREHOLES
LFASE(LOW FREQUENCY ACOUSTIC SEISMIC EXPERIMENT)
Purdy
North Atlantic
Online Access:http://www.dtic.mil/docs/citations/ADA266893
http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=ADA266893
Description
Summary:The data set described in this report was collected on 150-154 Ma oceanic crust during the DARPA/Navy Low Frequency Acoustic Seismic Experiment (LFASE). This is some of the oldest lithosphere remaining in the modern oceans. The experiment used an array of airguns as a source and ocean bottom seismographs (OBS) and a borehole array as receivers. our final model of the seismic structure of oceanic crust at the LFASE Site was obtained using travel times along with general characteristics of amplitudes and waveforms of the crustal P-wave arrivals. In this paper we discuss the results of the LFASE seismic data interpretation and compare our results to those of Purdy (1983) for 140 Ma lithosphere. Airgun refraction profiles, North Atlantic, Oldest oceanic lithosphere, Oceanic crust, WKBJ Synthetic seismograms.

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