THE APPLICATION OF MICROGRAVITY SURVEY FOR CAVE DETECTION IN A KARSTIC AREA. LARGE ROCK VAVERNS - PROCEEDINGS OF THE INTERNATIONAL SYMPOSIUM, HELSINKI, FINLAND, 25-28 AUGUST 1986. VOLUME 2

Microgravity survey has been used to delineate subsurface cavities and possible connected channels in a karstic area in the western desert of Iraq. The microgravity measurements are carried out using a microgravity meter along four profiles, each 3 km long and with a station at intervals of 10 meters. The survey shows a number of a low gravity anomalies that can be related to cavities at various depths. Meanwhile, the anomalies can be joined with each other across the profiles to indicate subsurface channels. The shape and depth of caves are determined by the comparison of the observed gravity anomalies and those calculated from the effect of the cave models. The survey was done for engineering purposes, particularly irrigation projects, to locate any possible waterways in the area of interest. It also provides information about the position and size of caves that require grouting, and at the same time avoids the high cost of drilling procedure that is conventionally used to locate these cavities. For the covering abstract of the symposium see IRRD 810647. (Author/TRRL)

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/isbn/0080340784
• Corporate Authors:

  Pergamon Press, Incorporated

  Headington Hill Hall
  Oxford OX30BW,    
• Authors:
  • Al-Rawi, F R
  • Rezkalla, J S
• Publication Date: 1987

Media Info

• Features: References;
• Pagination: p. 867-876
• Serial:
  • Publication of: Pergamon Press Limited
  • Publisher: Pergamon Press, Incorporated

Subject/Index Terms

• TRT Terms: Caverns; Conferences; Detection and identification; Detectors; Geological surveying; Geophysics; Karst; Measurement
• Geographic Terms: Iraq
• Old TRIS Terms: Cavity channels; Geologic investigations; Geophysical measurements; Microgravity
• ITRD Terms: 5738: Cavity; 8525: Conference; 9115: Detection; 5742: Geophysics; 5419: Gravity; 8048: Iraq; 4381: Karst; 6473: Mathematical model; 6136: Measurement; 5722: Site investigation; 4372: Subterranean
• Subject Areas: Geotechnology; Highways;

Filing Info

• Accession Number: 00476290
• Record Type: Publication
• Source Agency: Transport Research Laboratory
• ISBN: 0-08-034078-4
• Files: ITRD, TRIS
• Created Date: Sep 30 1988 12:00AM