Experimentally Determined Coordinates for Thress MILS Hydrophones Near Ascension Island.
We conducted an airgun survey in the waters of Ascension Island in May 1999 to determine new locations and depths for three Missile Impact Location System (MILS) hydrophones (ASC23, ASC24, and ASC26) currently in use by the Prototype International Data Center (PIDC) and the National Data Center (NDC...
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Language: | English |
Published: |
Livermore, Calif : Oak Ridge, Tenn. :
Lawrence Livermore National Laboratory ; Distributed by the Office of Scientific and Technical Information, U.S. Department of Energy,
1999.
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Online Access: | |
Physical Description: | 479 Kilobytes pages. |
Format: | Electronic eBook |
Abstract: |
We conducted an airgun survey in the waters of Ascension Island in May 1999 to determine new locations and depths for three Missile Impact Location System (MILS) hydrophones (ASC23, ASC24, and ASC26) currently in use by the Prototype International Data Center (PIDC) and the National Data Center (NDC). The nominal and new locations are summarized in Table 1. Although not rigorous, errors in the new locations and depths are conservatively estimated to be less than 100 m. The hydrophones are either on or near the ocean bottom in all three cases. The new depths are consistent with the following: Direct-phase airgun arrivals; Bathymetry determined along the track of the ship used for this airgun survey; Reflected phases from the airgun data; and Depths given in the original hydrophone installation report. |
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Note: | Published through the Information Bridge: DOE Scientific and Technical Information. "UCRL-ID-136507" Harben, P.E.; Rodgers, A.J.; Hollfelder, J.R.. Lawrence Livermore National Lab., CA (US) DOE Technical report ; UCRL-ID-136507 Electronic resource. |
Call Number: | E 1.99:UCRL-ID-136507 |
System Details: | Available via the World Wide Web. |
Type of Report and Period Covered: |
Topical;. |