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(fwd) report on shock wave/sound propagation modeling

Subject: (fwd) report on shock wave/sound propagation modeling
From: Dave Mellinger <>
Date: Thu, 01 Apr 2004 09:18:55 -0800
below, not to me.  -Dave Mellinger
From: Dagmar Fertl <[EMAIL PROTECTED]>
Date:    Fri, 26 Mar 2004 02:15:36 -0800
 Subject: Shock wave/sound propagation modeling for marine protected species
          impact zones during explosive removal of offshore structures (fwd)
 Shock Wave/Sound Propagation Modeling Results for Calculating Marine
 Protected Species Impact Zones during Explosive Removal of Offshore
 OCS Study MMS 2003-059
 The Minerals Management Service (MMS), Gulf of Mexico OCS Region,
 announces the availability of a new study, Shock Wave/Sound Propagation
 Modeling Results for Calculating Marine Protected Species Impact Zones
 during Explosive Removal of Offshore Structures.
 Available by PDF at
 For underwater calculator, you need to go to:
 <a  href=""; 
 Then scroll down to this study and find a link to calculator that 
 The objective of this study was to develop a method to determine shock
 wave propagation into water caused by the explosive removal of offshore
 structures. The objective was accomplished by performing numerical
 simulations of various explosive, pile, clay, and marine environments and
 determining the amount of energy coupled to the water. The numerical
 simulations demonstrated that less energy is coupled to the water for the
 detonation within a piling than would be coupled for free-water
 explosions. In addition, the simulations showed that a reduction of
 coupled energy into the water was dominated by pile confinement.
 Parametric numerical simulations were performed for a range of typical
 pile diameters, wall thicknesses, and explosive weights. From these
 results, a model was developed to predict the explosive efficiency factors
 for several scenarios. Finally, the UnderWater Calculator spreadsheet was
 developed to predict peak pressure, acoustic impulse, and energy flux
 density for both the free water and within piling detonations. The study
 describes the underwater shock wave/sound propagation model's development,
 design, and results.
 This study is available only in compact disc format. The discs are
 available from the Minerals Management Service, Gulf of Mexico OCS Region,
 at a charge of $15.00 by referencing OCS Study MMS 2003-059. You will be
 able to obtain this study also from the National Technical Information
 Service in the near future. Here are the addresses. You may also inspect
 copies at selected Federal Depository Libraries.
 Minerals Management Service
 Gulf of Mexico OCS Region
 Public Information Office (MS 5034)
 1201 Elmwood Park Boulevard
 New Orleans, Louisiana  70123-2394
 Telephone requests may be placed at
 (504) 736-2519, 1-800-200-GULF, or
 FAX: (504) 736-2620
 U.S. Department of Commerce
 National Technical Information Service
 5285 Port Royal Road
 Springfield, Virginia  22161
 (703) 487-4650 or FAX: (703) 321-8547
 Rush Orders: 1-800-336-4700
 MMS is the Federal agency in the U.S. Department of the Interior that
 manages the nation's oil, natural gas, and other mineral resources on the
 outer continental shelf in Federal offshore waters. The agency also
 collects, accounts for, and disburses mineral revenues from Federal and
 American Indian leases. These revenues totaled over $6 billion in 2002 and
 nearly $127 billion since the agency was created in 1982. Annually, nearly
 $1 billion from those revenues go into the Land and Water Conservation
 Fund for the acquisition and development of state and Federal park and
 recreation lands.

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