Manual de exploracion geofísica

CECW-EG Engineer Manual 1110-1-1802

Department of the Army

EM 1110-1-1802 31 August 1995

U.S. Army Corps of Engineers
Washington, DC 20314-1000

Engineering and Design GEOPHYSICAL EXPLORATION FOR ENGINEERING AND ENVIRONMENTAL INVESTIGATIONS

Distribution Restriction Statement
Approved for public release; distribution is unlimited.

EM 1110-1-1802 31 August 1995

US Army Corpsof Engineers ENGINEERING AND DESIGN

Geophysical Exploration for Engineering and Environmental Investigations

ENGINEER MANUAL

AVAILABILITY Copies of this and other U.S. Army Corps of Engineers publications are available from National Technical Information Service, 5285 Port Royal Road, Springfield, VA 22161. Phone (703)487-4650. Government agencies can order directlyu from the U.S. ArmyCorps of Engineers Publications Depot, 2803 52nd Avenue, Hyattsville, MD 20781-1102. Phone (301)436-2065. U.S. Army Corps of Engineers personnel should use Engineer Form 0-1687.

UPDATES For a list of all U.S. Army Corps of Engineers publications and their most recent publication dates, refer to Engineer Pamphlet 25-1-1, Index of Publications, Forms and Reports.

CECW-EG
Manual No.1110-1-1802

DEPARTMENT OF THE ARMY U.S. Army Corps of Engineers Washington, DC 20314-1000

EM 1110-1-1802

31 August 1995

Engineering and Design GEOPHYSICAL EXPLORATION FOR ENGINEERING AND ENVIRONMENTAL INVESTIGATIONS
1. Purpose. This manual provides an introduction to geophysical exploration for engineering,

geological, and environmental (to include Hazardous, Toxic and Radioactive Waste(HTRW)) investigations. Descriptions and guidance are provided for the geophysical methods typically used in these investigations.
2. Applicability. This manual applies to HQUSACE elements, major subordinate commands, districts,

laboratories, and field operating activities having responsibilities for civil works and/or military programs. FOR THE COMMANDER:

ROBERT H. GRIFFIN Colonel, Corps ofEngineers Chief of Staff

This manual supersedes EM 1110-1-1802, dated 31 May 1979.

CECW-EG
Manual No. 1110-1-1802

DEPARTMENT OF THE ARMY U.S. Army Corps of Engineers Washington, DC 20314-1000

EM 1110-1-1802

31 August 1995

Engineering and Design GEOPHYSICAL EXPLORATION FOR ENGINEERING AND ENVIRONMENTAL INVESTIGATIONS

Table of Contents
Subject Paragraph Page Subject ParagraphPage

Chapter 1 Introduction Purpose . . . . . . . . . . . . . . . . . . Applicability . . . . . . . . . . . . . . References . . . . . . . . . . . . . . . . Worker and Environmental Safety Glossary . . . . . . . . . . . . . . . . . Proponent . . . . . . . . . . . . . . . .

. . . 1-1 . . . 1-2 . . . 1-3 . . 1-4 . . . 1-5 . . . 1-6

1-1 1-1 1-1 1-1 1-1 1-1

Chapter 2 Geophysical MethodologyUses of Geophysical Surveys . . . . . . 2-1 Responsibilities of the Project Team . . . . . . . . . . . . . . . . . . . . . 2-2 Chapter 3 Seismic Procedures General Seismic Methods . Seismic Refraction . . . . . . Shallow Seismic Reflection Surface Wave Methods . . . Subbottom Profiling . . . . .

Induced Polarization . . . . . . . Time-Domain Electromagnetic Techniques for Resistivity Sounding. . . . . . . . . . . . . Frequency-Domain Electromagnetic Methods . . . . . . . Terrain Conductivity . . . . . . Metal Detector Surveys . . . . Ground-Penetrating Radar . . . Very Low-Frequency EM Procedures . . . . . . . . . . . . Chapter 5 Gravity Techniques Introduction . . . . . . . Applications . . . . . . . Noise Evaluation . . . . Rock Properties . . . . . Field Work . . . . . . . .

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4-24

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4-30 4-40 4-42 4-47 4-51 4-55

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2-1 2-5

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3-1 3-2 3-3 3-4 3-5

3-1 3-4 3-19 3-23 3-26

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