SHOT REFRACTION PROFILES IN THE ATLANTIC COASTAL PLAIN 6 MILES EAST OF AMBROSE LIGHTSHIP

Abstract

The mutually perpendicular profiles were obtained by reversed refraction shooting across a point at 40 27'55 N and 73 41'40 W, about 8 miles south of Long Beach, Long Island, and 6 miles east of Ambrose Lightship. Three ground layers were detected with slopes of less than 1 along either profile. The seismic velocities and thicknesses of the layers are as follows: water-4905ft/sec, 80 feet; unconsolidated sediment-5630 ft/sec, 750 feet; semi-consolidated sediment-6750 ft/sec, 1040 feet; rock basement-18,600 ft/sec. The velocity values and rock basement depth are in agreement with previous seismic refraction results for nearby ocean areas.

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Document Details

Document Type
Technical Report
Publication Date
Nov 10, 1953
Accession Number
AD0022285

Entities

People

  • M. V. Brown
  • R. O. Carlson

Organizations

  • Columbia University

Tags

Communities of Interest

  • Energy and Power Technologies
  • Ground and Sea Platforms

DTIC Thesaurus Topics

  • Abstracts
  • Acoustic Propagation
  • Fresh Water
  • Government Procurement
  • Intact Stability
  • Lightships
  • Military Research
  • National Security
  • New York
  • Precision
  • Security
  • Travel Time
  • Water
  • Water Waves
  • Water Wells
  • Waves
  • X Rays

Fields of Study

  • Geology

Readers

  • Explosive Engineering.
  • Oceanography.