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"Probable Production Induced Subsidence, Fault Reactivation, and Wetland Loss in the Gulf Coast Region" summarizes the significant results of a U.S. Geological Survey study conducted recently in Louisiana and Texas. The study results and their implications with regard to coastal restoration were presented to government agencies, academicians,
consultants, and the general public in Lafayette, Baton Rouge, and New Orleans, Louisiana the week of April 7, 2003. Additional information and supporting documents can be found at http://coastal.er.usgs.gov/gc-subsidence/.
Click on the links below to view the web version of the presentation or click on the image at right to download the PowerPoint version. Note: you will need Microsoft PowerPoint to view the PowerPoint version.
Table of Contents:
Title slide
Scientific objectives
Objectives continued
Environmental applications
Evidence of induced subsidence and fault reactivation
Evidence continued
Conceptual diagram showing possible effects of petroleum production
Field surveying methods
Cocodrie tide gauge
Sediment coring
Texas location map
Field production summaries
Port Neches Field map
Port Neches water depths and core locations
Port Neches core correlations
Texas location map
Photo of faults at Caplen Field
Caplen Field map
Caplen Field water depths and core locations
Caplen Field core correlations
Texas location map
Clam Lake map
Aerial photo of Clam Lake fault
Clam Lake topographic profile
Wetlands photo of Clam Lake fault
Louisiana location map
Louisiana data sets
Field production summaries
Annual production Valentine
BHP Valentine
Annual production Houma
Annual production Lirette
Annual production Lapeyrouse
BHP Lapeyrouse
Pressure gradient decline Lapeyrouse
Madison Bay core
Houma tide gauge
Relative sea-level rise at tide gauges
NGS relevel data 1965 - 1982
Accelerated subsidence at Valentine Field
NGS relevel data 1966 - 1993
Average geological and historical rates of subsidence for the Terrebonne delta plain region near Madison Bay
Annual production Lapeyrouse
Delta plain wetland loss
Conclusions
Conclusions continued
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