http://lod.bco-dmo.org/id/dataset/827544
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
2020-10-26
ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data
ISO 19115-2:2009(E)
Radiocarbon and 13C of sediment from cores collected pre- and post-hurricane Harvey at the Aransas and Anahuac National Wildlife Refuges, Texas on January 2018
2020-10-26
publication
2020-10-26
revision
Marine Biological Laboratory/Woods Hole Oceanographic Institution Library (MBLWHOI DLA)
2021-01-04
publication
https://doi.org/10.26008/1912/bco-dmo.827544.1
Jill Arriola
University of North Carolina at Chapel Hill
principalInvestigator
Jaye Cable
University of North Carolina at Chapel Hill
principalInvestigator
Tamlin Pavelsky
University of North Carolina at Chapel Hill
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: Arriola, J., Cable, J., Pavelsky, T. (2021) Radiocarbon and 13C of sediment from cores collected pre- and post-hurricane Harvey at the Aransas and Anahuac National Wildlife Refuges, Texas on January 2018. Biological and Chemical Oceanography Data Management Office (BCO-DMO). (Version 1) Version Date 2020-10-26 [if applicable, indicate subset used]. doi:10.26008/1912/bco-dmo.827544.1 [access date]
sediments Dataset Description: Methods and Sampling: <p>Three sediment cores were collected for analytical analyses from each site for a total of six cores. Sediments were extracted using a polycarbonate push core (7 cm ID x 50 cm L) with beveled edges pushed into the marsh surface. Cores were sectioned into 1-cm intervals on site on the day of collection and stored cold until laboratory analysis at the University of North Carolina, Chapel Hill, NC. All sediment samples were weighed damp, placed into a drying oven at 60°C for at least 48 hours for evaporation of water content and re-weighed dry. Bulk plant material, such as root mats and rhizomes, was manually removed with tweezers after the samples dried. Dried sediment samples were then homogenized using a mortar and pestle.</p>
<p>One 2014 pre-storm core from both sites, AR2 and AN2 (sediment collected in a previous study), and one 2018 post-storm core from Aransas, B, and two 2018 post-storm cores from Anahuac, D and E, were selected for bulk radiocarbon analyses. Samples were paired, one sample from the pre-storm core and one sample from the post-storm core, based on deposition age determined by 210Pb geochronology. Four pairs of samples were selected from each study site to be analyzed for bulk 14C age. In addition, one sediment surface sample from each site from the 2018 post-storm cores was selected for bulk 14C age analyses, for a total of 18 samples.</p>
<p>Aliquots of approximately 300 mg of dried and homogenized sample were placed into acid cleaned and pre-baked glass tubes with 3 mL of a 10 % hydrochloric acid solution, with the sediment slightly agitated to ensure full saturation, and left to soak overnight to thoroughly remove inorganic carbon. After sediments settled the acid was carefully removed via pipette as to not resuspend or extract fine sediments. Samples were then rinsed five times with 5 mL of Milli-Q water over the course of 48 hours, with at least 4 hours between rinses to allow sediment to settle, to raise the pH of the samples back to neutral, and then placed in a 60 °C oven until dry. About 1 mg of OC, based on % TOC results, was weighed into tin capsules, sealed, and analyzed for bulk Δ14C at the National Ocean Sciences Accelerator Mass Spectrometry facility at the Woods Hole Oceanographic Institution, Woods Hole, MA (NOSAMS).</p>
<p>A slow thermal ramp of 5 °C min-1 was performed on only three pairs of acid rinsed aliquots of pre- and post-storm samples and the post-storm surface sample from Aransas, for a total of seven sediment samples, in order to collect fractions of evolved CO2 as temperatures increased (i.e. fraction 1 is lower temperatures and 4 are higher). Detailed RPO experimental set-up and methods are available in Rosenheim et al. (2008) and Hemingway et al. (2017b). Detailed CO2 to graphite conversion methods are provided in Pearson et al. (1998) and Shah Walter et al. (2015). Graphite was analyzed for 14C on a Continuous Flow Accelerator Mass Spectrometer at NOSAMS. Samples were normalized to OX-I (Olsson, I.U., 1970) and radiocarbon-free acetanilide (J.T. Baker, A068-03) was used for blank correction. Standards from multiple international radiocarbon intercalibration comparisons and from International Atomic Energy Agency were used for secondary standards. δ13C was analyzed from gas samples on an Optima or Prism stable isotope mass&nbsp;spectrometer.</p>
<p>Analysis of raw RPO data, described in detail in Hemingway et al. (2017a) and Hemingway (2016), was performed using the Python® package rampedpyrox.</p>
Funding provided by NSF Division of Ocean Sciences (NSF OCE) Award Number: OCE-1760556 Award URL: https://www.nsf.gov/awardsearch/show-award?AWD_ID=1760556
completed
Jill Arriola
University of North Carolina at Chapel Hill
978-764-4547
415 Walker Building Pennsylvania State University
University Park
PA
16802
jva5648@psu.edu
pointOfContact
Jaye Cable
University of North Carolina at Chapel Hill
9194450415
3202 Venable Hall, CB#3300 University of North Carolina
Chapel Hill
NC
27599
US
jecable@email.unc.edu
pointOfContact
Tamlin Pavelsky
University of North Carolina at Chapel Hill
919-962-4239
Mitchell Hall, CB#3315 University of North Carolina
Chapel Hill
NC
27599
pavelsky@unc.edu
pointOfContact
asNeeded
Dataset Version: 1
Unknown
Site
station
Sample_ID
lat
lon
Year
Fraction
F14C
F14Cer
C_13
Continuous flow accelerator mass spectrometer
Optima or Prism stable isotope mass spectrometer
Polycarbonate push core (7 cm ID x 50 cm L) with beveled edges
theme
None, User defined
site
station
sample identification
latitude
longitude
year_decimal
No BCO-DMO term
Carbon 13 to Carbon 12 ratio of TCO2
featureType
BCO-DMO Standard Parameters
Accelerator Mass Spectrometer
Drying Oven
Isotope-ratio Mass Spectrometer
Push Corer
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.
Hurricane Harvey Impacts on Local and Landscape Scale Salt Marsh Carbon Storage
https://osprey.bco-dmo.org/project/815434
Hurricane Harvey Impacts on Local and Landscape Scale Salt Marsh Carbon Storage
<p>NSF Award Abstract:<br />
Coastal wetlands store more than 20% of global carbon, and salt marshes are estimated to have the highest carbon burial rates of all coastal wetlands. Disturbances, like large storms, have the potential to reduce the storage of carbon in salt marshes and lower their overall impact on the global carbon cycle. Previous studies have shown that large quantities of sediment were deposited on salt marshes in Louisiana after Hurricanes Katrina and Rita in 2005, but little was known about the state of the marshes before these impacts. Consequently, we can only speculate about the true impact of those storms on sediment carbon storage. Comparing pre-storm carbon storage to post-storm storage immediately (weeks to months) following landfall allows us to quantify the storm impacts and capture critical data before inventory signals are lost to the next event. This project will take advantage of the fact that the investigators have recently (2014) sampled salt marshes near both of the locations where Hurricane Harvey made landfall in August, 2017. They will collect new salt marsh sediment samples and compare their data to 2014 data in order to study the impact of storm passage on these important systems.</p>
<p>Hurricane Harvey made landfall as a Category 4 storm at Rockport, TX, on 25 Aug 2017, moved inland, circled back, and made a second landfall as a tropical storm east of Port Arthur, TX, on 30 Aug 2017. These two major storm landfalls coincide with locations of salt marsh carbon burial studies performed in 2014 by this research group at the Aransas National Wildlife Refuge (NWR) and the Anahuac NWR. These data provide a baseline against which to assess the impacts of recent major storm landfalls on marsh accretion and carbon burial. It is imperative to return to these study sites as soon as possible to ensure that the perishable data resulting from the impacts of this storm on these marshes are not altered by other meteorological events or human disturbances. The investigators hypothesize hurricanes redistributed sediments from offshore and within the fringing salt marsh onto the marsh platform, increasing the elevation of the marsh and burying organic matter as stored carbon. The objectives of this research are 1) to quantify the impact of extratropical storm sediment accretion on carbon storage in two salt marshes at the local scale using 2014 baseline data; and 2) to extend these local storm-induced carbon changes to the landscape scale using pre- and post-storm LiDAR and satellite imagery. To address these objectives and preserve the perishable data, field work will take place at the Aransas and Anahuac NWRs during the week of 16 Oct 2017. Four 50 cm cores, two from each site, will be collected and sectioned based on stratigraphic changes. Sediment will be analyzed for total organic carbon, carbon-14, lead-210, and sediment physical properties (Obj. 1). Ground-truth measurements across the marsh will be obtained using a Macaulay auger and used to validate post- hurricane LiDAR measurements, which will be compared to pre-hurricane measurements from 2014 (Obj. 1 & 2). Freely available archived and new satellite imagery and LiDAR will be used to measure changes in marsh height and area (Obj. 2). The project will form part of the doctoral research of a graduate student, and will also support a senior undergraduate student.</p>
Harvey Marsh Carbon Storage
largerWorkCitation
project
eng; USA
oceans
-96.80315
-94.55862
28.30388
29.57492
2014-01-01
2018-01-08
Salt marshes in the Heron Flats at the Mission-Aransas NERR, Texas, and in the Aransas NWR, Texas
0
BCO-DMO catalogue of parameters from Radiocarbon and 13C of sediment from cores collected pre- and post-hurricane Harvey at the Aransas and Anahuac National Wildlife Refuges, Texas on January 2018
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/827562.rdf
Name: Site
Units: unitless
Description: <p>site identifier</p>
http://lod.bco-dmo.org/id/dataset-parameter/827563.rdf
Name: station
Units: unitless
Description: <p>station identifier</p>
http://lod.bco-dmo.org/id/dataset-parameter/827564.rdf
Name: Sample_ID
Units: unitless
Description: <p>sample identifier includes station and depth</p>
http://lod.bco-dmo.org/id/dataset-parameter/827565.rdf
Name: lat
Units: decimal degrees
Description: <p>latitude; north is positive</p>
http://lod.bco-dmo.org/id/dataset-parameter/827566.rdf
Name: lon
Units: decimal degrees
Description: <p>longitude; east is postiive</p>
http://lod.bco-dmo.org/id/dataset-parameter/827567.rdf
Name: Year
Units: unitless
Description: <p>Year of deposition of sediments; year with decimal fraction (1/10 of year)</p>
http://lod.bco-dmo.org/id/dataset-parameter/827568.rdf
Name: Fraction
Units: unitless
Description: <p>thermally separated fractions of samples: 1; 2; 3; 4; or Bulk sediments</p>
http://lod.bco-dmo.org/id/dataset-parameter/827569.rdf
Name: F14C
Units: unitless
Description: <p>Fraction modern of 14C: a measurement of the deviation of the 14C/12C ratio of a sample from "Modern." Modern is defined as 95% of the radiocarbon concentration (in AD 1950) of NBS Oxalic Acid I (SRM 4990B; OX-I) normalized to d13CVPDB=-19 per mil (Olsson; 1970).</p>
http://lod.bco-dmo.org/id/dataset-parameter/827570.rdf
Name: F14Cer
Units: unitless
Description: <p>Measurement error of F14C</p>
http://lod.bco-dmo.org/id/dataset-parameter/827571.rdf
Name: C_13
Units: ppt
Description: <p>Stable isotope 13C</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
3009
https://darchive.mblwhoilibrary.org/bitstream/1912/26528/1/dataset-827544_2018-radiocarbon__v1.tsv
download
https://doi.org/10.26008/1912/bco-dmo.827544.1
download
onLine
dataset
<p>Three sediment cores were collected for analytical analyses from each site for a total of six cores. Sediments were extracted using a polycarbonate push core (7 cm ID x 50 cm L) with beveled edges pushed into the marsh surface. Cores were sectioned into 1-cm intervals on site on the day of collection and stored cold until laboratory analysis at the University of North Carolina, Chapel Hill, NC. All sediment samples were weighed damp, placed into a drying oven at 60°C for at least 48 hours for evaporation of water content and re-weighed dry. Bulk plant material, such as root mats and rhizomes, was manually removed with tweezers after the samples dried. Dried sediment samples were then homogenized using a mortar and pestle.</p>
<p>One 2014 pre-storm core from both sites, AR2 and AN2 (sediment collected in a previous study), and one 2018 post-storm core from Aransas, B, and two 2018 post-storm cores from Anahuac, D and E, were selected for bulk radiocarbon analyses. Samples were paired, one sample from the pre-storm core and one sample from the post-storm core, based on deposition age determined by 210Pb geochronology. Four pairs of samples were selected from each study site to be analyzed for bulk 14C age. In addition, one sediment surface sample from each site from the 2018 post-storm cores was selected for bulk 14C age analyses, for a total of 18 samples.</p>
<p>Aliquots of approximately 300 mg of dried and homogenized sample were placed into acid cleaned and pre-baked glass tubes with 3 mL of a 10 % hydrochloric acid solution, with the sediment slightly agitated to ensure full saturation, and left to soak overnight to thoroughly remove inorganic carbon. After sediments settled the acid was carefully removed via pipette as to not resuspend or extract fine sediments. Samples were then rinsed five times with 5 mL of Milli-Q water over the course of 48 hours, with at least 4 hours between rinses to allow sediment to settle, to raise the pH of the samples back to neutral, and then placed in a 60 °C oven until dry. About 1 mg of OC, based on % TOC results, was weighed into tin capsules, sealed, and analyzed for bulk Δ14C at the National Ocean Sciences Accelerator Mass Spectrometry facility at the Woods Hole Oceanographic Institution, Woods Hole, MA (NOSAMS).</p>
<p>A slow thermal ramp of 5 °C min-1 was performed on only three pairs of acid rinsed aliquots of pre- and post-storm samples and the post-storm surface sample from Aransas, for a total of seven sediment samples, in order to collect fractions of evolved CO2 as temperatures increased (i.e. fraction 1 is lower temperatures and 4 are higher). Detailed RPO experimental set-up and methods are available in Rosenheim et al. (2008) and Hemingway et al. (2017b). Detailed CO2 to graphite conversion methods are provided in Pearson et al. (1998) and Shah Walter et al. (2015). Graphite was analyzed for 14C on a Continuous Flow Accelerator Mass Spectrometer at NOSAMS. Samples were normalized to OX-I (Olsson, I.U., 1970) and radiocarbon-free acetanilide (J.T. Baker, A068-03) was used for blank correction. Standards from multiple international radiocarbon intercalibration comparisons and from International Atomic Energy Agency were used for secondary standards. δ13C was analyzed from gas samples on an Optima or Prism stable isotope mass&nbsp;spectrometer.</p>
<p>Analysis of raw RPO data, described in detail in Hemingway et al. (2017a) and Hemingway (2016), was performed using the Python® package rampedpyrox.</p>
Specified by the Principal Investigator(s)
<p><strong>BCO-DMO Processing Notes:</strong><br />
- data submitted in Excel file "Radiocarbon.xlsx" extracted to csv<br />
- extracted site, station, lat, and lon data into a separate stations .csv file<br />
- created new columns for station and sample by splitting the Sample_ID column for use as a join key to the stations file<br />
- joined the stations file to the radiocarbon file so lat, lon, and&nbsp;site are included in the final table<br />
- added conventional header with dataset name, PI name, version date<br />
- renamed columns to conform with BCO-DMO naming conventions (removed units and special characters)</p>
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
Continuous flow accelerator mass spectrometer
Continuous flow accelerator mass spectrometer
PI Supplied Instrument Name: Continuous flow accelerator mass spectrometer Instrument Name: Accelerator Mass Spectrometer Instrument Short Name:AMS Instrument Description: An AMS measures "long-lived radionuclides that occur naturally in our environment. AMS uses a particle accelerator in conjunction with ion sources, large magnets, and detectors to separate out interferences and count single atoms in the presence of 1x1015 (a thousand million million) stable atoms, measuring the mass-to-charge ratio of the products of sample molecule disassociation, atom ionization and ion acceleration." AMS permits ultra low-level measurement of compound concentrations and isotope ratios that traditional alpha-spectrometry cannot provide. More from Purdue University: http://www.physics.purdue.edu/primelab/introduction/ams.html Community Standard Description: http://vocab.nerc.ac.uk/collection/L05/current/LAB17/
PI Supplied Instrument Name: Instrument Name: Drying Oven Instrument Short Name: Instrument Description: a heated chamber for drying
Optima or Prism stable isotope mass spectrometer
Optima or Prism stable isotope mass spectrometer
PI Supplied Instrument Name: Optima or Prism stable isotope mass spectrometer PI Supplied Instrument Description:Used to measure delta13C. Instrument Name: Isotope-ratio Mass Spectrometer Instrument Short Name:IR Mass Spec; IRMS Instrument Description: The Isotope-ratio Mass Spectrometer is a particular type of mass spectrometer used to measure the relative abundance of isotopes in a given sample (e.g. VG Prism II Isotope Ratio Mass-Spectrometer). Community Standard Description: http://vocab.nerc.ac.uk/collection/L05/current/LAB16/
Polycarbonate push core (7 cm ID x 50 cm L) with beveled edges
Polycarbonate push core (7 cm ID x 50 cm L) with beveled edges
PI Supplied Instrument Name: Polycarbonate push core (7 cm ID x 50 cm L) with beveled edges PI Supplied Instrument Description:Used to collect the sediment samples. Instrument Name: Push Corer Instrument Short Name: Instrument Description: Capable of being performed in numerous environments, push coring is just as it sounds. Push coring is simply pushing the core barrel (often an aluminum or polycarbonate tube) into the sediment by hand. A push core is useful in that it causes very little disturbance to the more delicate upper layers of a sub-aqueous sediment.
Description obtained from: http://web.whoi.edu/coastal-group/about/how-we-work/field-methods/coring/