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GCE-LTER Data Set Summary
Accession:
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PHY-GCEM-0302e1
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Research Theme:
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Physical Oceanography (Monitoring)
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Contributors:
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Daniela Di Iorio, KiRyong Kang
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Title:
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September 2002 bin-averaged CTD profiles for the Georgia Coastal Ecosystems Altamaha River transect
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Abstract:
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Four hydrographic surveys were performed on September 18, 2002, along an east-to-west transect up the Altamaha River in Georgia (Altamaha River Transect, GCE-AL). Vertical CTD profiles were collected at 1-2km intervals from 2km east of the line of demarcation (station -02) to 28km 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.
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DOI:
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10.6073/pasta/06f37978f95daf9034769b39e57fdd85
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Key Words:
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conductivity, Cruise CTD Profiling, density, depth, estuaries, hydrography, pressure, salinity, temperature, water column
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LTER Core Area:
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Inorganic Matter
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Research Themes:
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GCE2 Q2 - Domain Patterns, GCE3 Area2 - Patterns within the Domain, Physical Oceanography, Hydrography/Hydrology |
Study Period:
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18-Sep-2002 to 18-Sep-2002
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Study Sites:
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GCE-AL -- Altamaha River, Georgia, USA
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Data References:
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PHY-GCEM-0302e2 (Original data set prior to bin-averaging, interpolation)
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Project References:
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Salinity variations across the GCE domain |
Publications:
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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.
Sheldon, J.E. and Alber, M. 2005. Presentation: Beyond whole-estuary flushing times: Using transport times through salinity zones to explain chlorophyll patterns in the Altamaha River estuary (Georgia, USA). Estuarine Interactions: biological-physical feedbacks and adaptations. 2005 Estuarine Research Federation Meeting. October 16-20, 2005, Norfolk, Virginia.
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Downloads:
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Data Table: PHY-GCEM-0302e1 (Main data table for data set PHY-GCEM-0302e1, 344 records)
Access: Public (released 01-Feb-2004)
Metadata: Text (ESA FLED),
XML (Ecological Metadata Language)
Data Formats: Spreadsheet (CSV) [52.30kb], Text File [48.55kb], MATLAB (GCE Toolbox) [334.53kb], MATLAB (Variables) [307.55kb], Text Report [90.52kb]
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 |
Transect |
none |
string |
GCE cruise transect |
13 |
Station |
none |
string |
GCE-LTER sampling station |
14 |
SurveyName |
none |
string |
Cruise survey title |
15 |
Survey |
none |
integer |
Nominal survey |
16 |
Cast |
none |
integer |
CTD cast number |
17 |
Depth |
m |
floating-point |
Water depth at pressure sensor |
18 |
Temperature |
°C |
floating-point |
Water temperature |
19 |
Conductivity |
S/m |
floating-point |
Conductivity |
20 |
Salinity |
PSU |
floating-point |
Salinity |
21 |
Density |
kg/m^3 |
floating-point |
Water density |
22 |
Sigma_t |
kg/m^3 |
floating-point |
Sigma-t (i.e. (Water Density-1)*1000) |
23 |
OBS |
unspecified |
floating-point |
Optical back-scatter |
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Statistics:
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Generate script code to retrieve data tables for analysis in: MATLAB, R, SAS, SPSS |
Citation:
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Di Iorio, Daniela. 2003. September 2002 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/06f37978f95daf9034769b39e57fdd85
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