http://lod.bco-dmo.org/id/dataset/869708 eng; USA utf8 dataset Highest level of data collection, from a common set of sensors or instrumentation, usually within the same research project Biological and Chemical Oceanography Data Management Office (BCO-DMO) Unavailable 508-289-2009 WHOI MS#36 Woods Hole MA 02543 USA info@bco-dmo.org http://www.bco-dmo.org Monday - Friday 8:00am - 5:00pm For questions regarding this resource, please contact BCO-DMO via the email address provided. pointOfContact 2022-02-14 ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data ISO 19115-2:2009(E) Salinity, radium/thorium radionuclide, and nitrogen oxide concentration measurements from surface and porewater samples collected in coastal South Carolina from 2017 to 2019 2022-02-14 publication 2022-02-14 revision Marine Biological Laboratory/Woods Hole Oceanographic Institution Library (MBLWHOI DLA) 2022-02-21 publication https://doi.org/10.26008/1912/bco-dmo.869708.1 Timothy Shaw University of South Carolina principalInvestigator Biological and Chemical Oceanography Data Management Office (BCO-DMO) Unavailable 508-289-2009 WHOI MS#36 Woods Hole MA 02543 USA info@bco-dmo.org http://www.bco-dmo.org Monday - Friday 8:00am - 5:00pm For questions regarding this resource, please contact BCO-DMO via the email address provided. publisher Cite this dataset as: Shaw, T., Bodine, M. (2022) Salinity, radium/thorium radionuclide, and nitrogen oxide concentration measurements from surface and porewater samples collected in coastal South Carolina from 2017 to 2019. Biological and Chemical Oceanography Data Management Office (BCO-DMO). (Version 1) Version Date 2022-02-14 [if applicable, indicate subset used]. doi:10.26008/1912/bco-dmo.869708.1 [access date] Methods and Sampling: &lt;p&gt;Location:&amp;nbsp;&amp;nbsp;&lt;br /&gt; Folly Island and Marsh, South Carolina, 32.68 N, 79.95 W&lt;br /&gt; Daniel Island creek/marsh, South Carolina 32.89 N, 79.9 W&lt;/p&gt; &lt;p&gt;Sampling and analytical procedures:&lt;/p&gt; &lt;p&gt;Water samples were poured through PCV columns containing 15 grams of manganese impregnated fiber. The columns were returned to the lab (collection times were recorded to account for decay before counting) where the fiber was rinsed with deionized water and dried with compressed air to the point of no excess water expulsion. The samples were then weighed so that constant water content could be achieved between counting.&lt;/p&gt; &lt;p&gt;The RaDeCC counters had previously been flushed with air for a minimum of 15 minutes. Once the sample was attached, the system was flushed with helium and then closed trapping the helium. The samples were then counted three different times. The first count was directly after being rinsed and dried. The second count happened three days later. The third count happens approximately 3 weeks later, the sample is counted for 6 hours. The level of moisture is checked between each counting and adjusted by weight. The collection and counting method is adapted from Moore (2007) and Moore and Arnold (1996).&lt;/p&gt; &lt;p&gt;After the three counts on the RaDeCC the fibers are leached following an adapted method outlined by Moore et al (1985). In brief, the fibers are heated in a mixture of hydrochloric acid and hydroxylamine hydrochloride until pale. The fibers are then filtered and rinsed with hydrochloric acid and water. The leachate is then treated with barium nitrate (saturated) and 1 molar sodium hydrogen sulfate (or 1 molar sodium sulfate) and stirred to form a precipitate. After settling, the precipitate is centrifuged with excess liquid removed. The precipitate is then aged 2 weeks and counted using the WeGe.&lt;/p&gt; &lt;p&gt;For the determination of NOX, the method from Schnetger, Bernhard &amp;amp; Lehners, Carola. (2014) was used. In brief, the sample is collected in a glass vial and transported to the lab. To analyze nitrite a ratio of 10:1 sample to reagent (1:1 of NEED 0.004 M and Sulfanilamide 0.12 M) is incubated at 45C for 30 minutes or 60 minutes at room temperature. The absorbance is then measured at 540 nm. Total nitrogen oxide analysis is then performed using a 1:1.5 ratio of sample to reagent ( 5:1:1 of VCl&lt;sub&gt;3&lt;/sub&gt; 0.05 M: NEED 0.004 M: Sulfanilamide 0.12 M) where the sample is incubated for 60 minutes at 45C, then absorbance is measured at 540 nm. A correction is made to account for the amount of NO&lt;sub&gt;2&lt;/sub&gt; lost by conversion to NO to obtain a final corrected value for NOX total nitrogen oxides.&amp;nbsp;&lt;/p&gt; Funding provided by NSF Division of Ocean Sciences (NSF OCE) Award Number: OCE-1559274 Award URL: https://www.nsf.gov/awardsearch/show-award?AWD_ID=1559274 completed Timothy Shaw University of South Carolina 803-777-0352 631 Sumter Street Columbia SC 29208-0001 USA shaw@mail.chem.sc.edu pointOfContact asNeeded Dataset Version: 1 Unknown Sample_Name Sample_Type Year_Collected Collection_date ISO_DateTime_UTC Latitude Longitude Salinity exRa224_dpm_per_L Ra223_dpm_per_L Th228_dpm_per_L Ra226_dpm Ra228_dpm Ra226_dpm_per_L Ra228_dpm_per_L Nitrate_and_Nitrite Nitrate_and_Nitrite_std_dev Collection_time Well Germanium Crystal Gamma Ray Detector (WeGe) Radium Delayed Coincidence Counter YSI Model 30 PushPoint sippers YSI Model 30 theme None, User defined sample identification sample description year date_local ISO_DateTime_UTC latitude longitude salinity radioactive isotope concentration nitrate plus nitrite time_local featureType BCO-DMO Standard Parameters Gamma Ray Spectrometer Radium Delayed Coincidence Counter Salinity Sensor Sediment Porewater Sampler Temperature Logger instrument BCO-DMO Standard Instruments otherRestrictions otherRestrictions Access Constraints: none. Use Constraints: Please follow guidelines at: http://www.bco-dmo.org/terms-use Distribution liability: Under no circumstances shall BCO-DMO be liable for any direct, incidental, special, consequential, indirect, or punitive damages that result from the use of, or the inability to use, the materials in this data submission. If you are dissatisfied with any materials in this data submission your sole and exclusive remedy is to discontinue use. A New Method for Assessing the Magnitude and Impact of Shallow Seawater/Pore water Exchange in Salt Marsh Systems https://osprey.bco-dmo.org/project/842600 A New Method for Assessing the Magnitude and Impact of Shallow Seawater/Pore water Exchange in Salt Marsh Systems <p><strong>NSF Award Abstract:</strong><br /> Tidal marshes are critical junctions between marine and terrestrial chemical processes. The chemical and physical processes that tidal marsh sediments undergo determine the nature of the transformation and accumulation of particulate organic carbon (POC) at the marine to terrestrial interface. Physical transport of pore water through marsh sediments greatly influences the availability of carbon and nutrients that can undergo transformative reactions at the marine to terrestrial interface. Past studies have shown that there is a discrepancy between predicted rates of pore water flow and calculated estimates from tracer studies. Because this flow is crucial to the chemistry of sediment at the terrestrial to marine interface, which is the first junction of the chemical species exported to the ocean, it is important to explain the discrepancy between expected rates of flow and observed rates. This study will use a known tracer method based on natural isotopic ratios (224Radon/228Thorium) and will develop a new method (223Radon/ 227Actinium) to evaluate the export of POC due to pore water flow in tidal marsh sediments, which will have much broader impacts to the overall marine carbon budget. Results from this work will also be integrated into workshops that will educate students and teachers from outside of oceanography about oceanographic carbon and climate research. Presentations will also be developed in collaboration with the South Carolina State Museum as part of the Science Café series. Additionally, one graduate student and one undergraduate student will be supported by this funding.</p> <p>Predicted advection rates of pore water in very fine-grained tidal marsh sediments have been shown to significantly differ from rates calculated using tracer studies. Because tidal marshes are a crucial chemical link at the marine terrestrial interface, and advection has a significant impact on the availability of chemical species to undergo diagenetic reactions at this interface, it is of significant importance to evaluate this discrepancy. Export of particulate organic carbon (POC) and dissolved organic carbon (DIC), in particular, are of interest, due to the impact on microbial communities within sediments. This research aims to validate the method of 224Ra/228Th disequilibrium to calculate pore water exchange rates. Previous studies using this method have provided evidence for more rapid pore water exchange than would generally be expected in such fine-grained sediments, which are less permeable than coarser grained sediment. Additionally, this research will attempt to develop the disequilibrium method for 223Ra/227Ac. The researchers will evaluate the impact of advection rates on the export of chemical species in salt marshes.</p> Salt Marsh Water Exchange largerWorkCitation project eng; USA oceans -79.968 -79.8965 32.6474 32.8963 2017-05-31 2019-09-28 0 BCO-DMO catalogue of parameters from Salinity, radium/thorium radionuclide, and nitrogen oxide concentration measurements from surface and porewater samples collected in coastal South Carolina from 2017 to 2019 Biological and Chemical Oceanography Data Management Office (BCO-DMO) Unavailable 508-289-2009 WHOI MS#36 Woods Hole MA 02543 USA info@bco-dmo.org http://www.bco-dmo.org Monday - Friday 8:00am - 5:00pm For questions regarding this resource, please contact BCO-DMO via the email address provided. pointOfContact http://lod.bco-dmo.org/id/dataset-parameter/869728.rdf Name: Sample_Name Units: unitless Description: <p>Name of sample</p> http://lod.bco-dmo.org/id/dataset-parameter/869729.rdf Name: Sample_Type Units: unitless Description: <p>Surface or Pore Water</p> http://lod.bco-dmo.org/id/dataset-parameter/869730.rdf Name: Year_Collected Units: unitless Description: <p>Year sample was collected in format YYYY.</p> http://lod.bco-dmo.org/id/dataset-parameter/869731.rdf Name: Collection_date Units: unitless Description: <p>Date sample was collected in ISO 8601 format YYYY-MM-DD.</p> http://lod.bco-dmo.org/id/dataset-parameter/869732.rdf Name: ISO_DateTime_UTC Units: Time UTC Description: <p>Date and time of collection in ISO 8601 format YYYY-MM-DDThh:mmZ</p> http://lod.bco-dmo.org/id/dataset-parameter/869733.rdf Name: Latitude Units: decimal degrees Description: <p>Latitude of sample location</p> http://lod.bco-dmo.org/id/dataset-parameter/869734.rdf Name: Longitude Units: decimal degrees Description: <p>Longitude of sample location (West is negative)</p> http://lod.bco-dmo.org/id/dataset-parameter/869735.rdf Name: Salinity Units: Parts per trillion(ppt) Description: <p>Salinity of water sample</p> http://lod.bco-dmo.org/id/dataset-parameter/869736.rdf Name: exRa224_dpm_per_L Units: Decays per minute per liter (dpm/L) Description: <p>Excess Radium224 measured</p> http://lod.bco-dmo.org/id/dataset-parameter/869737.rdf Name: Ra223_dpm_per_L Units: Decays per minute per liter (dpm/L) Description: <p>Radium223 measured</p> http://lod.bco-dmo.org/id/dataset-parameter/869738.rdf Name: Th228_dpm_per_L Units: Decays per minute per liter (dpm/L) Description: <p>Thorium228 measured</p> http://lod.bco-dmo.org/id/dataset-parameter/869739.rdf Name: Ra226_dpm Units: Decays per minute (dpm) Description: <p>Radium 226 measured</p> http://lod.bco-dmo.org/id/dataset-parameter/869740.rdf Name: Ra228_dpm Units: Decays per minute (dpm) Description: <p>Radium 228 measured</p> http://lod.bco-dmo.org/id/dataset-parameter/869741.rdf Name: Ra226_dpm_per_L Units: Decays per minute per liter (dpm/L) Description: <p>Radium 226 measured</p> http://lod.bco-dmo.org/id/dataset-parameter/869742.rdf Name: Ra228_dpm_per_L Units: Decays per minute per liter (dpm/L) Description: <p>Radium 228 measured</p> http://lod.bco-dmo.org/id/dataset-parameter/869743.rdf Name: Nitrate_and_Nitrite Units: Micromolar (uM) Description: <p>Nitrogen oxides measured</p> http://lod.bco-dmo.org/id/dataset-parameter/869744.rdf Name: Nitrate_and_Nitrite_std_dev Units: Micromolar (uM) Description: <p>Nitrogen oxides measured standard deviation</p> http://lod.bco-dmo.org/id/dataset-parameter/870001.rdf Name: Collection_time Units: unknown Description: <p>Time (local EST/EDT) sample was collected in ISO 8601 format hh:mm.</p> GB/NERC/BODC > British Oceanographic Data Centre, Natural Environment Research Council, United Kingdom Biological and Chemical Oceanography Data Management Office (BCO-DMO) Unavailable 508-289-2009 WHOI MS#36 Woods Hole MA 02543 USA info@bco-dmo.org http://www.bco-dmo.org Monday - Friday 8:00am - 5:00pm For questions regarding this resource, please contact BCO-DMO via the email address provided. pointOfContact 16648 https://darchive.mblwhoilibrary.org/bitstream/1912/28032/1/dataset-869708_salt-marsh-water-exchange-water__v1.tsv download https://doi.org/10.26008/1912/bco-dmo.869708.1 download onLine dataset &lt;p&gt;Location:&amp;nbsp;&amp;nbsp;&lt;br /&gt; Folly Island and Marsh, South Carolina, 32.68 N, 79.95 W&lt;br /&gt; Daniel Island creek/marsh, South Carolina 32.89 N, 79.9 W&lt;/p&gt; &lt;p&gt;Sampling and analytical procedures:&lt;/p&gt; &lt;p&gt;Water samples were poured through PCV columns containing 15 grams of manganese impregnated fiber. The columns were returned to the lab (collection times were recorded to account for decay before counting) where the fiber was rinsed with deionized water and dried with compressed air to the point of no excess water expulsion. The samples were then weighed so that constant water content could be achieved between counting.&lt;/p&gt; &lt;p&gt;The RaDeCC counters had previously been flushed with air for a minimum of 15 minutes. Once the sample was attached, the system was flushed with helium and then closed trapping the helium. The samples were then counted three different times. The first count was directly after being rinsed and dried. The second count happened three days later. The third count happens approximately 3 weeks later, the sample is counted for 6 hours. The level of moisture is checked between each counting and adjusted by weight. The collection and counting method is adapted from Moore (2007) and Moore and Arnold (1996).&lt;/p&gt; &lt;p&gt;After the three counts on the RaDeCC the fibers are leached following an adapted method outlined by Moore et al (1985). In brief, the fibers are heated in a mixture of hydrochloric acid and hydroxylamine hydrochloride until pale. The fibers are then filtered and rinsed with hydrochloric acid and water. The leachate is then treated with barium nitrate (saturated) and 1 molar sodium hydrogen sulfate (or 1 molar sodium sulfate) and stirred to form a precipitate. After settling, the precipitate is centrifuged with excess liquid removed. The precipitate is then aged 2 weeks and counted using the WeGe.&lt;/p&gt; &lt;p&gt;For the determination of NOX, the method from Schnetger, Bernhard &amp;amp; Lehners, Carola. (2014) was used. In brief, the sample is collected in a glass vial and transported to the lab. To analyze nitrite a ratio of 10:1 sample to reagent (1:1 of NEED 0.004 M and Sulfanilamide 0.12 M) is incubated at 45C for 30 minutes or 60 minutes at room temperature. The absorbance is then measured at 540 nm. Total nitrogen oxide analysis is then performed using a 1:1.5 ratio of sample to reagent ( 5:1:1 of VCl&lt;sub&gt;3&lt;/sub&gt; 0.05 M: NEED 0.004 M: Sulfanilamide 0.12 M) where the sample is incubated for 60 minutes at 45C, then absorbance is measured at 540 nm. A correction is made to account for the amount of NO&lt;sub&gt;2&lt;/sub&gt; lost by conversion to NO to obtain a final corrected value for NOX total nitrogen oxides.&amp;nbsp;&lt;/p&gt; Specified by the Principal Investigator(s) &lt;p&gt;Data from both the RaDeCC and WeGe are in text files. The relevant numbers from the raw data are transferred to Excel spreadsheets where calculations (including decay, coincidence counts, error) are performed to obtain final results.&lt;/p&gt; &lt;p&gt;Excel version: Microsoft® Excel® for Microsoft 365 MSO (Version 2111 Build 16.0.14701.20254) 64-bit&amp;nbsp; .&lt;br /&gt; &lt;br /&gt; BCO-DMO Data Manager Processing Notes:&lt;br /&gt; * First sheet named &quot;Water&quot; imported from Excel file&amp;nbsp;ALLDATA_ToSubmitWater.xlsx into the BCO-DMO data system.&lt;br /&gt; * Parameters (column names) renamed to comply with BCO-DMO naming conventions. See https://www.bco-dmo.org/page/bco-dmo-data-processing-conventions&lt;br /&gt; * Date format converted to ISO 8601 date format yyyy-mm-dd&lt;br /&gt; * There were a few time formats that had extra seconds as :00, these were stripped of to match the time format hh:mm of the rest of the dataset.&amp;nbsp;&lt;br /&gt; * DateTime in UTC converted to ISO 8601 format yyyy-mm-ddTHH:MMZ&lt;br /&gt; * Latitude and longitude rounded to five decimal places (from 8).&lt;br /&gt; * Longitude made negative since West is negative in decimal degrees.&lt;br /&gt; * The following columns rounded to two decimal places (guidance from submitter).&amp;nbsp;exRa224_dpm_per_L, Ra223 dpm_per_L ,Th228 dpm_per_L , Ra226_dpm, Ra228_dpm, Ra226_dpm_L, Ra228_dpm_per_L&lt;br /&gt; * column names&amp;nbsp;NOX and NOX_Std_dev&amp;nbsp;changed to&amp;nbsp;Nitrate_and_Nitrite and Nitrate_and_Nitrite_std_dev for clarity&amp;nbsp;Columns also rounded to one decimal place. (guidance from submitter).&amp;nbsp;&amp;nbsp;&lt;/p&gt; Specified by the Principal Investigator(s) asNeeded 7.x-1.1 Biological and Chemical Oceanography Data Management Office (BCO-DMO) Unavailable 508-289-2009 WHOI MS#36 Woods Hole MA 02543 USA info@bco-dmo.org http://www.bco-dmo.org Monday - Friday 8:00am - 5:00pm For questions regarding this resource, please contact BCO-DMO via the email address provided. pointOfContact Well Germanium Crystal Gamma Ray Detector (WeGe) Well Germanium Crystal Gamma Ray Detector (WeGe) PI Supplied Instrument Name: Well Germanium Crystal Gamma Ray Detector (WeGe) PI Supplied Instrument Description:Well Germanium Crystal Gamma Ray Detector (WeGe), Manufactured by Canberra, used to measure 226Ra and 228Ra. Instrument Name: Gamma Ray Spectrometer Instrument Short Name: Instrument Description: Instruments measuring the relative levels of electromagnetic radiation of different wavelengths in the gamma-ray waveband. Radium Delayed Coincidence Counter Radium Delayed Coincidence Counter PI Supplied Instrument Name: Radium Delayed Coincidence Counter PI Supplied Instrument Description:Radium Delayed Coincidence Counter, Manufactured by Scientific Computer Instruments. Used to measure 220Rn and 219Rn which allows for the quantification of 224Ra, 223Ra, and 228Th. Instrument Name: Radium Delayed Coincidence Counter Instrument Short Name:RaDeCC Instrument Description: The RaDeCC is an alpha scintillation counter that distinguishes decay events of short-lived radium daughter products based on their contrasting half-lives. This system was pioneered by Giffin et al. (1963) and adapted for radium measurements by Moore and Arnold (1996). References: Giffin, C., A. Kaufman, W.S. Broecker (1963). Delayed coincidence counter for the assay of actinon and thoron. J. Geophys. Res., 68, pp. 1749-1757. Moore, W.S., R. Arnold (1996). Measurement of 223Ra and 224Ra in coastal waters using a delayed coincidence counter. J. Geophys. Res., 101 (1996), pp. 1321-1329. Charette, Matthew A.; Dulaiova, Henrieta; Gonneea, Meagan E.; Henderson, Paul B.; Moore, Willard S.; Scholten, Jan C.; Pham, M. K. (2012). GEOTRACES radium isotopes interlaboratory comparison experiment. Limnology and Oceanography - Methods, vol 10, pg 451. YSI Model 30 YSI Model 30 PI Supplied Instrument Name: YSI Model 30 PI Supplied Instrument Description:YSI Model 30 Salinity Conductivity Temperature, Model 30/50 FT, Manufactured by YSI Incorporated, used for salinity and temperature measurements Instrument Name: Salinity Sensor Instrument Short Name:Salinity Sensor Instrument Description: Category of instrument that simultaneously measures electrical conductivity and temperature in the water column to provide temperature and salinity data. Community Standard Description: http://vocab.nerc.ac.uk/collection/L05/current/350/ PushPoint sippers PushPoint sippers PI Supplied Instrument Name: PushPoint sippers PI Supplied Instrument Description:PushPoint sippers, Manufactured by M.H.E Products, use to collect pore water samples. Instrument Name: Sediment Porewater Sampler Instrument Short Name: Instrument Description: A device that collects samples of pore water from various horizons below the seabed. YSI Model 30 YSI Model 30 PI Supplied Instrument Name: YSI Model 30 PI Supplied Instrument Description:YSI Model 30 Salinity Conductivity Temperature, Model 30/50 FT, Manufactured by YSI Incorporated, used for salinity and temperature measurements. Instrument Name: Temperature Logger Instrument Short Name: Instrument Description: Records temperature data over a period of time.