Georgia Coastal Ecosystems LTER Data Set Details

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GCE-LTER Data Set Summary

Accession:

PHY-GCEM-0404a1

Research Theme:

Physical Oceanography (Monitoring)

Contributors:

Daniela Di Iorio, KiRyong Kang

Title:

March 2004 bin-averaged CTD profiles for the Georgia Coastal Ecosystems Altamaha River transect

Abstract:

Four hydrographic surveys were performed on March 13, 2004, along an east-to-west transect up the Altamaha River in Georgia (Altamaha River Transect, GCE-AL). Vertical CTD profiles were collected at 2-4km 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/b3287f6507dc20c4429207fc3d5a9cc2

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:

13-Mar-2004 to 13-Mar-2004

Study Sites:

GCE-AL -- Altamaha River, Georgia, USA

» Download Geographic Coverage: Google Earth

Data References:

PHY-GCEM-0404a2 (Bin-averaged, interpolated physical parameters)

Project References:

Salinity variations across the GCE domain

Publications:

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:

Data Table: PHY-GCEM-0404a1 (Main data table for data set PHY-GCEM-0404a1, 284 records)

Access: Public (released 02-Apr-2005)

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

Data Formats: Spreadsheet (CSV) [45.51kb], Text File [41.75kb], MATLAB (GCE Toolbox) [331.59kb], MATLAB (Variables) [303.51kb], Text Report [84.96kb]

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. March 2004 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/b3287f6507dc20c4429207fc3d5a9cc2

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