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GCE-LTER Data Set Summary

Accession: PHY-GCEM-0401a1 Research Theme: Physical Oceanography (Monitoring)
Contributors: Daniela Di Iorio, KiRyong Kang
Title: December 2003 bin-averaged CTD profiles for the Georgia Coastal Ecosystems Altamaha River transect
Abstract: Four hydrographic surveys were performed on December 2, 2003, along an east-to-west transect up the Altamaha River in Georgia (Altamaha River Transect, GCE-AL). Vertical CTD profiles were collected at 2km intervals from the -4km to 24km upriver along the transect during low and high tidal regimes. Conductivity, temperature, pressure and optical backscatter were measured, and depth, salinity and sigma-t were calculated for each profile. Data values collected on the upcast were deleted, and the remaining data were averaged within 0.5m depth bins and interpolated to produce a smooth profile for contouring. This data set was collected as part of the Georgia Coastal Ecosystems LTER quarterly hydrographic monitoring program.
DOI: 10.6073/pasta/fb538ea0871c42365b7608e20dbfd2dd
Key Words: conductivity, Cruise CTD Profiling, density, depth, estuaries, hydrography, pressure, salinity, temperature, water column
LTER Core Area: Inorganic Matter
Research Themes: GCE2 Q2 - Domain Patterns, GCE3 Area2 - Patterns within the Domain, Physical Oceanography, Hydrography/Hydrology
Study Period: 02-Dec-2003 to 02-Dec-2003
Study Sites:
GCE-AL -- Altamaha River, Georgia, USA
» Download Geographic Coverage: Google Earth
Data References: PHY-GCEM-0401a2 (Bin-averaged, interpolated physical parameters)
Project References: Salinity variations across the GCE domain

Sheldon, J.E. and Alber, M. 2005. Comparing Transport Times Through Salinity Zones in the Ogeechee and Altamaha River Estuaries Using SqueezeBox. In: Hatcher, K.J. (editor). Proceedings of the 2005 Georgia Water Resources Conference. Institute of Ecology, University of Georgia, Athens, Georgia.

Downloads: Information

Data Table: PHY-GCEM-0401a1 (Main data table for data set PHY-GCEM-0401a1, 304 records)

Access: Public (released 14-Jan-2005)

Metadata: Text (ESA FLED), XML (Ecological Metadata Language)

Data Formats: Spreadsheet (CSV) [48.69kb],  Text File [44.69kb],  MATLAB (GCE Toolbox) [343.20kb],  MATLAB (Variables) [315.15kb],  Text Report [88.89kb]

Column List:(hide)

Column Name Units Type Description
1 Cruise none string GCE-LTER research cruise identifier (LTER[MM][YY])
2 Year YYYY integer Calendar year
3 Month MM integer Calendar month
4 Day DD integer Calendar day
5 Hour hours floating-point Fractional hours GMT
6 Longitude degrees floating-point Geographic longitude
7 Latitude degrees floating-point Geographic latitude
8 Depth_Total m floating-point Water column depth measured by shipboard SONAR
9 RealTime none integer Real-time profile data flag (low frequency data collection rate)
10 Filename none string CTD cast filename
11 CTD none integer ID number of CTD instrument used for the cast
12 Tide none string Nominal tide stage based on predicted tidal harmonics and shipboard observation
13 Transect none string GCE cruise transect
14 Station none string GCE-LTER sampling station
15 SurveyName none string Cruise survey title
16 Survey none integer Nominal survey
17 Cast none integer CTD cast number
18 Depth m floating-point Bin-averaged and interpolated water depth at pressure sensor
19 Temperature °C floating-point Water temperature, bin-averaged and interpolated based on Depth values
20 Conductivity S/m floating-point Conductivity, bin-averaged and interpolated based on Depth values
21 Salinity PSU floating-point Salinity, bin-averaged and interpolated based on Depth values
22 Density kg/m^3 floating-point Water density, bin-averaged and interpolated based on Depth values
23 Sigma_t kg/m^3 floating-point Sigma-t (i.e. (Water Density-1)*1000), bin-averaged and interpolated based on Depth values
24 OBS none floating-point Optical back-scatter, bin-averaged and interpolated based on Depth values
Statistics: Generate script code to retrieve data tables for analysis in: MATLAB, R, SAS, SPSS
Citation: Di Iorio, Daniela. 2004. December 2003 bin-averaged CTD profiles for the Georgia Coastal Ecosystems Altamaha River transect. Georgia Coastal Ecosystems LTER Project, University of Georgia, Long Term Ecological Research Network. http://dx.doi.org/10.6073/pasta/fb538ea0871c42365b7608e20dbfd2dd

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This material is based upon work supported by the National Science Foundation under grants OCE-9982133, OCE-0620959, OCE-1237140 and OCE-1832178. Any opinions, findings, conclusions, or recommendations expressed in the material are those of the author(s) and do not necessarily reflect the views of the National Science Foundation.