LFASE Report: Crustal Study

Abstract

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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Document Details

Document Type
Technical Report
Publication Date
Jul 12, 1993
Accession Number
ADA266893

Entities

People

  • John A. Orcutt
  • Liliya V. Posiolova

Organizations

  • Scripps Institution of Oceanography

Tags

Communities of Interest

  • Ground and Sea Platforms
  • Space

DTIC Thesaurus Topics

  • Data Sets
  • Frequency
  • Loran
  • Magnetic Anomalies
  • Measurement
  • Navigation
  • Oceanography
  • Oceans
  • Physics
  • Physics Laboratories
  • Recording Systems
  • Seabed
  • Seismographs
  • Seismometers
  • Sonar
  • Travel Time
  • Water Waves

Fields of Study

  • Environmental science

Readers

  • Acoustical Oceanography.
  • Seismology