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GCE-LTER Data Set Summary

Accession: PHY-GCEM-0111d Research Theme: Physical Oceanography (Monitoring)
Contributors: Daniela Di Iorio, KiRyong Kang
Title: Spring 2001 CTD profiles for the Georgia Coastal Ecosystems Altamaha River transect
Abstract: A series of four hydrographic surveys were performed from May 30 through June 4, 2001, along an east-to-west transect up the Altamaha River in Georgia. Vertical CTD profiles were collected at 1-2km intervals from 4km east of the line of demarcation (station -4) to 28km upriver along the transect during various 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/50e439f5a63d6f06b3830fc6cdd7199f
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: 30-May-2001 to 04-Jun-2001
Study Sites:
GCE-AL -- Altamaha River, Georgia, USA
» Download Geographic Coverage: Google Earth
Data References: PHY-GCEM-0205d (Original data set prior to bin-averaging, interpolation)
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-0111d (Main data table for data set PHY-GCEM-0111d, 733 records)

Access: Public (released 19-Nov-2002)

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

Data Formats: Spreadsheet (CSV) [101.51kb],  Text File [97.18kb],  MATLAB (GCE Toolbox) [473.77kb],  MATLAB (Variables) [442.89kb],  Text Report [144.83kb]

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 CTD none integer ID number of CTD instrument used for the cast
11 Transect none string GCE cruise transect
12 Station none string GCE-LTER sampling station
13 SurveyName none string Cruise survey title
14 Survey none integer Nominal survey
15 Cast none integer CTD cast number
16 Depth m floating-point Water depth at pressure sensor
17 Temperature °C floating-point Water temperature
18 Conductivity S/m floating-point Conductivity
19 Salinity PSU floating-point Salinity
20 Density kg/m^3 floating-point Water density
21 Sigma_t kg/m^3 floating-point Sigma-t (i.e. (Water Density-1)*1000)
22 OBS unspecified floating-point Optical back-scatter
Statistics: Generate script code to retrieve data tables for analysis in: MATLAB, R, SAS, SPSS
Citation: Di Iorio, Daniela. 2001. Spring 2001 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/50e439f5a63d6f06b3830fc6cdd7199f

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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.