DETECTION OF SUBSIDENCE CONDITIONS BY PHOTOGEOLOGY

A variety of air-photo interpretation criteria need to be used for detecting areas of potential subsidence. An initial step is to search for past failures showing on air photographs, to establish the cause and to interpret the boundaries of the environment that might be affected. Causes detectable include karstic terrain, areas liable to piping, or containing concealed peat, old shafts, and stratiform or vein workings. Airborne imaging conditions can be selected to improve the possibility of detection in some situations. The technique can indicate situations where risks are high, but cannot be used to map with certainty voids liable to collapse. (A) /TRRL/

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/00137952
• Corporate Authors:

  Elsevier

  Radarweg 29
  Amsterdam,   Netherlands  1043 NX
• Authors:
  • Norman, J W
  • Watson, I
• Publication Date: 1975

Language

• English

Media Info

• Features: Figures; Photos; References;
• Pagination: p. 359-381
• Serial:
  • ENGINEERING GEOLOGY
  • Volume: 9 N
  • Issue Number: 4
  • Publisher: Elsevier
  • ISSN: 0013-7952

Subject/Index Terms

• TRT Terms: Aerial photography; Detection and identification; Detectors; Economic efficiency; Environment; Evaluation and assessment; Ground settlement; Hazards; Infrared radiation; Machine shafts; Moisture content; Peat; Photointerpretation; Pipe; Porosity; Quality control; Risk assessment; Rocks; Soils; Structural settlement; Subsidence; Terrain
• Uncontrolled Terms: Boundaries; Criteria; Efficiency; Quality
• Old TRIS Terms: Air photointerpretation; Photogeology
• ITRD Terms: 4006: Aerial photography; 5911: Efficiency; 9020: Evaluation (assessment); 6797: Infrared; 5920: Moisture content; 5938: Porosity; 9063: Quality; 4154: Rock; 5792: Settlement; 4156: Soil
• Subject Areas: Economics; Geotechnology; Highways; Safety and Human Factors; I41: General Soil Surveys;

Filing Info

• Accession Number: 00137487
• Record Type: Publication
• Source Agency: Transport and Road Research Laboratory (TRRL)
• Files: ITRD, TRIS
• Created Date: Oct 6 1976 12:00AM