Current/temperature measurements near the Sigsbee Escarpment from the MMS Desoto Canyon Intrusion Study, 19990829 - 20010906 (NCEI Accession 0002569)
During this study in-situ measurement of currents, temperature, and conductivity were made on a series of tautline moorings near the base of and on the Sigsbee Escarpment. These were supplemented during six of the 24 months of measurements by three Inverted Echo Sounders with Pressure. The primary objective of this project was documentation of near bottom/lower layer dynamics which have been identified as having high current speeds over an extended lower layer water column with near bottom intensification. Observations were often jointly funded by the MMS and BP. Results showed the layer below a nominal depth of 1000 m to have vertically highly coherent motion with a weak shear profile. The dominant process affecting currents at the base of the Escarpment appear to be Topographic Rossby Waves with periods of 8-11 days which moved through the study area in trains that could continue for many months. Current speeds as high as 1.75 kts. were measured 100 m above the bottom in 2000 m water depths.
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| description | During this study in-situ measurement of currents, temperature, and conductivity were made on a series of tautline moorings near the base of and on the Sigsbee Escarpment. These were supplemented during six of the 24 months of measurements by three Inverted Echo Sounders with Pressure. The primary objective of this project was documentation of near bottom/lower layer dynamics which have been identified as having high current speeds over an extended lower layer water column with near bottom intensification. Observations were often jointly funded by the MMS and BP. Results showed the layer below a nominal depth of 1000 m to have vertically highly coherent motion with a weak shear profile. The dominant process affecting currents at the base of the Escarpment appear to be Topographic Rossby Waves with periods of 8-11 days which moved through the study area in trains that could continue for many months. Current speeds as high as 1.75 kts. were measured 100 m above the bottom in 2000 m water depths. |
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| identifier | gov.noaa.nodc:0002569 |
| issued | 2006-02-10T00:00:00.000+00:00 |
| keyword |
[
"0002569",
"CONDUCTIVITY",
"CURRENT SPEED - EAST/WEST COMPONENT (U)",
"CURRENT SPEED - NORTH/SOUTH COMPONENT (V)",
"DEPTH - BOTTOM",
"DEPTH - OBSERVATION",
"SALINITY",
"water depth",
"WATER TEMPERATURE",
"WIND DIRECTION",
"WIND SPEED",
"ADCP",
"current meter",
"inverted echo sounder (IES)",
"meteorological sensor",
"current measurements",
"meteorological",
"physical",
"profile",
"time series",
"Science Applications International Corporation - Raleigh, NC",
"Science Applications International Corporation - Raleigh, NC",
"DESOTO CANYON EDDY INTRUSION STUDY",
"Gulf of Mexico",
"oceanography",
"DOC/NOAA/NESDIS/NODC > National Oceanographic Data Center, NESDIS, NOAA, U.S. Department of Commerce",
"SAIC > Science Applications International Corporation",
"EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC WINDS > SURFACE WINDS > WIND DIRECTION",
"EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC WINDS > SURFACE WINDS > WIND SPEED",
"EARTH SCIENCE > OCEANS > BATHYMETRY/SEAFLOOR TOPOGRAPHY > WATER DEPTH",
"EARTH SCIENCE > OCEANS > OCEAN CIRCULATION > OCEAN CURRENTS",
"EARTH SCIENCE > OCEANS > OCEAN TEMPERATURE > WATER TEMPERATURE",
"EARTH SCIENCE > OCEANS > SALINITY/DENSITY > CONDUCTIVITY",
"EARTH SCIENCE > OCEANS > SALINITY/DENSITY > SALINITY",
"ADCP > Acoustic Doppler Current Profiler",
"CURRENT METERS",
"IES > Inverted Echo Sounders",
"OCEAN > ATLANTIC OCEAN > NORTH ATLANTIC OCEAN > GULF OF AMERICA",
"OCEAN > ATLANTIC OCEAN > NORTH ATLANTIC OCEAN > GULF OF MEXICO"
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| license | https://creativecommons.org/publicdomain/zero/1.0/ |
| modified | 2006-02-10T00:00:00.000+00:00 |
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|
| rights | otherRestrictions |
| spatial | -89.7,27.11,-90.26,27.38 |
| temporal | 1999-08-29T00:00:00+00:00/2001-09-06T00:00:00+00:00 |
| title | Current/temperature measurements near the Sigsbee Escarpment from the MMS Desoto Canyon Intrusion Study, 19990829 - 20010906 (NCEI Accession 0002569) |
