Resonant acoustic profiling

2006 ◽  
Author(s):  
M. Cooper
Keyword(s):  
Acoustic Profiling

Resonant acoustic profiling for biological detection and diagnostics

2008 ◽  
Author(s):  
W. Chiu ◽  
C.J. Hammond ◽  
R. Hammond ◽  
L. Harding ◽  
E. Hawkins ◽  
...  
Keyword(s):  
Biological Detection ◽  
Acoustic Profiling

Acoustic profiling of suspended sediments in the marine bottom boundary layer

1982 ◽  
Vol 9 (3) ◽  
pp. 175-178 ◽  
Author(s):  
Robert A. Young ◽  
John T. Merrill ◽  
Thomas L. Clarke ◽  
John R. Proni
Keyword(s):  
Boundary Layer ◽  
Suspended Sediments ◽  
Bottom Boundary Layer ◽  
Bottom Boundary ◽  
Acoustic Profiling

Application of acoustic profiling to study sedimentation processes in a tailings disposal dam

2007 ◽  
Author(s):  
Marco Ianniruberto* ◽  
Augusto César Bittencourt Pires ◽  
Carlos Tadeu Carvalho do Nascimento ◽  
Raminez Manoel Rodrigues do Carmo
Keyword(s):  
Tailings Disposal ◽  
Acoustic Profiling ◽  
Sedimentation Processes

Bedrock knobs, San Francisco Bay; do navigation hazards outweigh other environmental problems?

2000 ◽  
Vol 6 (1) ◽  
pp. 41-55 ◽  
Author(s):  
Paul R. Carlson ◽  
John L. Chin ◽  
Florence L. Wong
Keyword(s):  
San Francisco ◽  
San Francisco Bay ◽  
Negative Impact ◽  
Public Officials ◽  
Traffic Lane ◽  
Traffic Area ◽  
Unconsolidated Sediment ◽  
Game Fish ◽  
Acoustic Profiling ◽  
Local Habitat

Abstract Three bedrock knobs (Arch, Harding, and Shag rocks) rise above the unconsolidated sediment of central San Francisco Bay to a water depth of less than -12 m (<-39.4 ft MLLW). These rocks are within the westbound vessel traffic area, and the northernmost, Harding Rock, is approximately 300 m (984 ft) from the two-way deep water traffic lane. The rocks pose a hazard to deep-draft vessels. Large ships with drafts deeper than -17 m (-55.8 ft) cross central San Francisco Bay bound for and returning from major port cities of the Bay estuary. Acoustic profiling data show that bedrock extends at a gentle to moderate slope away from the knobs. These data also show that two of the knobs, Harding and Shag, may be part of a bedrock ridge that extends to Alcatraz Island and perhaps southeast to Blossom Rock. The tops of these rocks should be lowered to a depth of -17 m (-55.8 ft), with a total volume of as much as 245,000 m 3 (320,460 yd 3 ), at an estimated cost of nearly 27 million dollars, to eliminate the possibility that a tanker would strike one and rupture. A resulting large oil spill would likely cost many times more than the 10 million dollars needed to clean up a small 1996 spill. If the rocks were removed, local habitat for striped bass and other game fish would be altered, with potential negative impact on sport fishing. Currently, public officials are studying the benefits to the Bay environment of lowering the rock knobs.

Sign in / Sign up

Export Citation Format

Share Document