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Woods Hole Coastal and Marine Science Center Home > U.S. Geological Survey Oceanographic Time-Series Data Collection > Lake Ponchartrain > Sampling Interval

U.S. Geological Survey Oceanographic Time-Series Data Collection

Lake Ponchartrain Project

Basic Sample Interval

"Basic Sample Interval" means the time interval at which the data were collected, thus the files served here have different time bases. Some files will contain data sampled every 5 minutes, while others contain data sampled every 60 minutes. The basic sample interval varies by instrument and deployment. The basic sample interval is listed in each file's global attributes as "DELTA_T" (in seconds). In the table, positive Latitude or Longitude indicates North or East.
 

File Name Start Date
(yyyy-mm-dd)
End Date
(yyyy-mm-dd)
Latitude
(decimal degrees)
Longitude
(decimal degrees)
Sensor Depth (meters) Water Depth (meters) Instrument Type Variables
4541-a.cdf 1995-03-23 1995-07-11 30.3142 -90.0950 2.9 5.0 MIDAS temperature,pressure
4551sc-a.cdf 1995-03-24 1995-07-11 30.2147 -90.1775 1.1 5.0 Seabird Seacat conductivity, salinity, sigma theta, temperature
4552c-a.cdf 1995-03-23 1995-07-11 30.2147 -90.1775 4.9 5.0 MIDAS conductivity, salinity, temperature
4552p-a.cdf 1995-03-23 1995-07-11 30.2147 -90.1775 2.0 5.0 Paros pressure, attenuation
4552t-a.cdf 1995-03-23 1995-07-11 30.2147 -90.1775 5.0 5.0 MIDAS conductivity, salinity, temperature
4552tct-a.cdf 1995-03-23 1995-07-11 30.2147 -90.1775 5.0 5.0 MIDAS conductivity, salinity, temperature
4552tr-a.cdf 1995-03-23 1995-07-11 30.2147 -90.1775 4.9 5.0 MIDAS attenuation, pressure
4561sc1-a.cdf 1995-03-24 1995-04-24 30.0510 -90.1543 1.0 4.0 Seabird Seacat conductivity, salinity, sigma theta, temperature
4561sc2-a.cdf 1995-04-24 1995-07-11 30.0510 -90.1543 2.0 4.0 Seabird Seaca conductivity, salinity, sigma theta, temperature
4562p1-a.cdf 1995-03-23 1995-04-24 30.0510 -90.1543 1.9 4.0 Paros pressure
4562p2-a.cdf 1995-04-24 1995-07-11 30.0510 -90.1543 2.6 4.0 Paros pressure
4562tct1-a.cdf 1995-03-23 1995-04-24 30.0510 -90.1543 3.3 3.0 MIDAS conductivity, salinity, temperature
4562tct2-a.cdf 1995-04-24 1995-07-11 30.0510 -90.1543 3.4 3.0 MIDAS conductivity, salinity, temperature
5141tcp-a_d1.nc 1998-01-18 1998-05-05 30.1644 -90.0824 5.0 5.5 MIDAS attenuation, conductivity, pressure, salinity, temperature
5141tcp-a_d2.nc 1998-01-18 1998-05-05 30.1644 -90.0824 2.3 5.5 MIDAS attenuation, conductivity, pressure, salinity, temperature
5141v-a_d1.nc 1998-01-18 1998-05-05 30.1644 -90.0824 5.1 5.5 MIDAS currents
5141v-a_d2.nc 1998-01-18 1998-05-05 30.1644 -90.0824 2.3 5.5 MIDAS currents
5141var-a_d1.nc 1998-01-18 1998-05-05 30.1644 -90.0824 5.0 5.5 MIDAS current variance, pressure
5141var-a_d2.nc 1998-01-18 1998-05-05 30.1644 -90.0824 3.1 5.5 MIDAS current variance, pressure
5151tcp-a_d1.nc 1998-01-18 1998-05-05 30.0322 -90.1955 2.7 3.3 MIDAS attenuation, conductivity, pressure, salinity, temperature
5151tcp-a_d2.nc 1998-01-18 1998-05-05 30.0322 -90.1955 1.0 3.3 MIDAS attenuation, conductivity, pressure, salinity, temperature
5151v-a_d1.nc 1998-01-18 1998-05-05 30.0322 -90.1955 2.8 3.3 MIDAS currents
5151v-a_d2.nc 1998-01-18 1998-05-05 30.0322 -90.1955 0.9 3.3 MIDAS currents
5151var-a_d1.nc 1998-01-18 1998-05-05 30.0322 -90.1955 2.8 3.3 MIDAS current variance, pressure
5151var-a_d2.nc 1998-01-18 1998-05-05 30.0322 -90.1955 0.9 3.3 MIDAS current variance, pressure

 

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