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Data server object:  radium_isotopes_gw




  
    Radium isotope results from groundwater wells around Little Lagoon, Alabama from 2010-2012 (LittleLagoonGroundwater project)
    
  
  
    
    

Radium isotope results from groundwater wells around Little Lagoon, Alabama from 2010-2012 (LittleLagoonGroundwater project)

Website: https://www.bco-dmo.org/dataset/537393
Data Type: Cruise Results
Version: working toward final
Version Date: 2014-11-05

Project
» Groundwater Discharge, Benthic Coupling and Microalgal Community Structure in a Shallow Coastal Lagoon (LittleLagoonGroundwater)
ContributorsAffiliationRole
Burnett, William C.Florida State University (FSU - EOAS)Principal Investigator
Mortazavi, BehzadUniversity of Alabama-Tuscaloosa (UA/Tuscaloosa)Co-Principal Investigator
Allison, DickyWoods Hole Oceanographic Institution (WHOI BCO-DMO)BCO-DMO Data Manager


Coverage

Spatial Extent: N:30.275 E:-87.657 S:30.245 W:-87.786
Temporal Extent: 2010-06-29 - 2012-05-21

Dataset Description

 Radium isotope results from groundwater wells around Lake Shelby, Alabama.  These data are part of a study to assess submarine groundwater discharge.

Results, methodology, summary tables and instrumentation are included in:

Su, Ni, W.C. Burnett, H.L. MacIntyre, J.D. Liefer, R.N. Peterson and R. Viso, 2014.  Natural Radon and Radium Isotopes for Assessing Groundwater Discharge into Little Lagoon, AL: Implications for Harmful Algal Blooms. Estuaries and Coasts, 37: 893-910.   (pdf)

Keywords:  Radium isotopes; Submarine groundwater discharge; algal blooms; 


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Parameters

ParameterDescriptionUnits
date_localdate at time of collection dd-mon-yy
yearyear of collection yyyy
yrday_localday of year - mostly for plotting julian day
sitedescriptive text for station text
latlatitude decimal degrees; North is positive
lonlongitude decimal degrees; West is negative
salsalinity practical salinity units
Ra223radium isotope 223 disintegrations per minute per Liter
err_Ra223uncertainty of measurements - plus or minus one delta disintegrations per minute per Liter
temptemperature of water degrees centigrade
Ra224radium isotope 224 disintegrations per minute per 100 Liters
err_Ra224uncertainty of measurements - plus or minus one delta disintegrations per minute per 100 Liters
Ra226radium isotope 224 disintegrations per minute per 100 Liters
err_Ra226uncertainty of measurements - plus or minus one delta disintegrations per minute per 100 Liters
Ra228radium isotope 224 disintegrations per minute per 100 Liters
Ra228_erruncertainty of measurements - plus or minus one delta disintegrations per minute per 100 Liters


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Instruments

Dataset-specific Instrument Name
Ortec IG detector
Generic Instrument Name
Gamma Ray Spectrometer
Dataset-specific Description
with relative efficiency of 20% (Dulaiova and Burnet, 2004) - see methodology paper by Su et al. Ra determined via Lucas cell counting and assessed by gamma spectrometry (R=0.97, n=112).
Generic Instrument Description
Instruments measuring the relative levels of electromagnetic radiation of different wavelengths in the gamma-ray waveband.


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Deployments

LittleLagoon

Website
Platform
SmallBoat_FSU
Start Date
2010-04-05
End Date
2013-08-17
Description
The sampling sites were all accessed from small boats, here amalgamated to one deployment called LittleLagoon.


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Project Information

Groundwater Discharge, Benthic Coupling and Microalgal Community Structure in a Shallow Coastal Lagoon (LittleLagoonGroundwater)

Coverage: southern Alabama, east of Mobile


  This project investigated the link between submarine groundwater discharge (SGD) and microalgal dynamics in Little Lagoon, Alabama.  In contrast to most near-shore environments, it is fully accessible; has no riverine inputs; and is large enough to display ecological diversity (c. 14x 0.75 km) yet small enough to be comprehensively sampled on appropriate temporal and spatial scales. The PIs have previously demonstrated that the lagoon is a hot-spot for toxic blooms of the diatom Pseudo-nitzchia spp. that are correlated with discharge from the surficial aquifer. This project assessed variability in SGD, the dependence of benthic nutrient fluxes on microphytobenthos (MPB) abundance and productivity, and the response of the phytoplankton to nutrient enrichment and dilution. The work integrated multiple temporal and spatial scales and demonstrated both the relative importance of SGD vs. benthic recycling as a source of nutrients, and the role of SGD in structuring the microalgal community. (paraphrased from Award abstract)


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Funding

Funding SourceAward
NSF Division of Ocean Sciences (NSF OCE)

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This document is created by info v 4.1f 5 Oct 2018 from the content of the BCO-DMO metadata database.    2020-02-18  02:32:31