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LUMCON Marine Center

Terrebonne Bay

Lake Pontchartrain

Audubon

Tambour Bay

Southwest Pass

Station Information

Location: Marine Center
Latitude: 29° 15.200' N
Longitude: 90° 39.800' W
Elevation: 1 meters

Last Inspection Date:8/4/2010

Instruments

Meteorologic Instrumentation

DescriptionModel #Manufacturer
Air Pressure Sensor PTB101B Vaisala
Air Pressure Sensor PTB101B Vaisala
Humidity & Temp Probe HMP45AC Vaisala
Quantum Light Sensor LI-190SB-L Li-Cor
Radiation Shield, Multi-Plate 41002 R.M. Young Company
Solar Radiation Sensor LI-200SZ Li-Cor
Tipping Bucket Rain Gauge TB30.01 Ecoharmony/Hydrological Services PTY LTD
Wind Monitor 05103-5 R.M. Young Company
Hydrographic Instrumentation

DescriptionModel #Manufacturer
Chlorophyll Probe 6025 YSI
Conductivity Probe YSI 6560 YSI
Dissolved Oxygen Probe 6150 ROX YSI
Sonde 6600 6600 SV YSI
Turbidity Probe YSI 6436-AF YSI
Electronic Instrumentation

DescriptionModel #Manufacturer
Antenna, Yagi 890-960 MHz YA5 900 Radiall/Larsen Antenna Technologies
Cable, Sonde vented 10 ft 063380-10-NM YSI
Marine Battery 8271 NAPA Auto Parts
Micrologger CR23X CR23X Campbell Scientific
Solar Panel, 20 Watt MSX20U Solarex
Solar Panel, 20 Watts SX320J bp Solar
Surge Suppressor, Antenna IS-B50LN-C2 PolyPhaser
Surge supressor, Dataline RS232 DB9 Tripp Lite
Wireless Data Transceiver FGR-115R FreeWave Technologies

Maintenance History (3 Months) [View Entire History]

Date Action Comments
8/13/2010 Troubleshooting Sonde 2742 stop working since 8-4-10 at 10:20pm CST. It is retrieved and sonde 32625 is deployed.  
8/11/2010 Troubleshooting FreWave Radio No.911-1981 is installed at the station and communication with Tower is fixed.  
8/9/2010 Troubleshooting we lost communication with the station since 8-4-10 at 10:20pm CST. The FreeWave radio No. 914-9460 is retrieved for testing.  
8/4/2010 Inspection Air pressure retrieved for recalibration. A calibrated one is installed.  
7/14/2010 Maintenance Retrieved sonde for few minutes to measure distance from bottom of water to deck.\nAccording to the measurements the sonde is installed all the way down to the bottom of the water. Distance from main deck to water level sensor is 2.34m. \n  
7/9/2010 Maintenance Retrieved sonde 2925 and 2742 deployed. Sonde 2925 were giving bad water height readings.  
7/8/2010 Inspection Sonde 3016 retrieved and sonde 2925 deployed. DO and Chrolophyll probes had mud on the optical surface.  

Station Elevation Information

A survey was conducted on July 12, 2003 to determine the vertical elevation of a reference point near the Pump House located behind the DeFelice Marine Center. To review the full version of this survey in PDF format Click Here.
The survey was conducted by:

Morris P. Hebert Inc.
Surveying - Engineering - Environmental Services
283 Corporate Drive
PO Box 3106
Houma, LA. 70361

The following correction factors should be applied:
  Feet Meters  
NAVD 88 Correction Term (Subtract from Database Sonde Value) 4.10 1.25  

EXAMPLE: Given a water height reading from the sonde of 5.25 feet (1.6 meters) the following calculation can be made:

Water Height = Sonde Water Height - NAVD 88 Correction Term

1.6 meters (5.25ft) - 1.25 meters (4.1 ft) = 0.35 meters (1.15 ft)

RESULT: 0.35 meters (1.15 ft) Relative to NAVD 88 Datum

Note:All archive depth data is reported in meters.


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