http://lod.bco-dmo.org/id/dataset/854241
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
2021-06-22
ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data
ISO 19115-2:2009(E)
Particulate Th-234 collected with surface-tethered sediment traps at Station ALOHA as part of the EAGER chief scientist training cruise (KM1910) in the subtropical North Pacific gyre in June 2019
2021-07-20
publication
2021-07-20
revision
Marine Biological Laboratory/Woods Hole Oceanographic Institution Library (MBLWHOI DLA)
2021-07-20
publication
https://doi.org/10.26008/1912/bco-dmo.854241.1
Matthew J. Church
University of Montana
principalInvestigator
Sara Ferrón
University of Hawaiʻi at Mānoa
principalInvestigator
Erica Goetze
University of Hawaiʻi at Mānoa
principalInvestigator
Angelicque E. White
University of Hawai'i
principalInvestigator
Erin E. Black
Columbia University
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: Kenyon, J., Black, E., Church, M. J. (2021) Particulate Th-234 collected with surface-tethered sediment traps at Station ALOHA as part of the EAGER chief scientist training cruise (KM1910) in the subtropical North Pacific gyre in June 2019. Biological and Chemical Oceanography Data Management Office (BCO-DMO). (Version 1) Version Date 2021-07-20 [if applicable, indicate subset used]. doi:10.26008/1912/bco-dmo.854241.1 [access date]
Particulate Thorium-234 Flux Dataset Description: Methods and Sampling: <p>Particle flux measurements from the Chief Scientist Training cruise generally followed the methods of the Hawaii Ocean Time-Series (HOT). Measurements were made at 75 meters, 150 meters, and 300 meters using multiple cylindrical particle interceptor traps deployed on a free-floating array for approximately 3 days twice during cruise KM1910 at station ALOHA. Sediment trap design and collection methods are described in Winn et al. (1991). Sediment trap tubes were split, with roughly 50% of the split going to Th-234 particulate analysis.</p>
<p>All thorium-234 data were decay corrected back to mid-deployment times. The subsampled trap material was gradually poured into 25 millimeter (mm) filter funnels containing 25 mm QMA or GFF filters (most were QMA and efficiency differences were taken into account). Once all the trap subsample liquid was filtered, the 25 mm filter was dried at low temperature for a few hours (&lt;60 degrees Celsius). Samples were mounted and prepared for beta counting according to the techniques noted in Pike et al., 2005 and Clevenger et al., 2021.</p>
Funding provided by NSF Division of Ocean Sciences (NSF OCE) Award Number: OCE-1911831 Award URL: https://www.nsf.gov/awardsearch/show-award?AWD_ID=1911831
Funding provided by NSF Division of Ocean Sciences (NSF OCE) Award Number: OCE-1911990 Award URL: https://www.nsf.gov/awardsearch/show-award?AWD_ID=1911990
completed
Matthew J. Church
University of Montana
(406) 982-3301
Flathead Lake Biological Station, University of Montana 321225 Bio Station Lane
Polson
MT
59860-6815
USA
matt.church@flbs.umt.edu
pointOfContact
Sara Ferrón
University of Hawaiʻi at Mānoa
(808) 956-3420
1950 East West Road
Honolulu
HI
96822
USA
sferron@hawaii.edu
pointOfContact
Erica Goetze
University of Hawaiʻi at Mānoa
808-956-7156
Department of Oceanography, University of Hawaii at Manoa 1000 Pope Road
Honolulu
HI
96822
United States
egoetze@hawaii.edu
pointOfContact
Angelicque E. White
University of Hawai'i
808-956-6220
1950 East West Rd.
Honolulu
HI
USA
aewhite@hawaii.edu
pointOfContact
Erin E. Black
Columbia University
585-375-3440
Rochester
NY
14627
USA
e.black@rochester.edu
pointOfContact
asNeeded
Dataset Version: 1
Unknown
Trap_Event_ID
Depth
Tube_ID
Start_Date_HAST
End_Date_HAST
Start_ISO_DateTime_UTC
End_ISO_DateTime_UTC
Latitude_In
Longitude_In
Latitude_Out
Longitude_Out
Volume
Fraction_Trap_Material_Coll
Th234_Flux
Th234_Flux_SD
Th234_Flux_QF
theme
None, User defined
deployment number
depth
sample identification
date
ISO_DateTime_UTC
latitude
longitude
volume
sample fraction (includes size fractions)
thorium-234 activity
standard deviation
quality flag
featureType
BCO-DMO Standard Parameters
Riso Laboratory Anti-coincidence Beta Counter
Sediment Trap
instrument
BCO-DMO Standard Instruments
KM1910
service
Deployment Activity
Honolulu, Hawai'i
place
Locations
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.
EAGER Collaborative Research: Early career chief scientist training for biological and chemical oceanographers
https://osprey.bco-dmo.org/project/805876
EAGER Collaborative Research: Early career chief scientist training for biological and chemical oceanographers
<p><em>NSF Award Abstract:</em></p>
<p>Intellectual Merit<br />
The PIs request funds to provide training in leading and organizing research cruises to early career researchers in the areas of Biological and Chemical Oceanography. Participants in this training program would be introduced to pre-cruise planning and logistics, receive training in commonly used oceanographic sampling equipment, and conduct shipboard measurements during a 10-day oceanographic cruise to the North Pacific Subtropical Gyre (NPSG). The goal of this training program is to prepare early career scientists for leading and participating in interdisciplinary oceanographic research at sea.</p>
<p>Broader Impacts<br />
The proposed program addresses the broader impacts criteria successfully. The research cruise and follow-up reports and publications focus on interdisciplinary questions important for advancing the field. Given the rapid changes that oceanic systems are undergoing, it is important to have a cadre of junior scientists who are adept at managing interdisciplinary collaborations and conducting research at sea. The PIs are considering ways to connect with diverse audiences in recruiting participants. The impact on early career oceanographers will be very strong. This will create an experience that will be a major impact on the careers of the trainees, especially if they stay in the oceanography field.</p>
Chief Sci KM1910
largerWorkCitation
project
eng; USA
oceans
Honolulu, Hawai'i
-158.44
-157.785
22.1
23.13
2019-06-16
2019-06-23
Station ALOHA (22.75N, 158W), North Pacific Ocean
0
BCO-DMO catalogue of parameters from Particulate Th-234 collected with surface-tethered sediment traps at Station ALOHA as part of the EAGER chief scientist training cruise (KM1910) in the subtropical North Pacific gyre in June 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/855007.rdf
Name: Trap_Event_ID
Units: Unitless
Description: <p>Sediment trap deployments were indicated with a T, followed by the deployment number (1 or 2)</p>
http://lod.bco-dmo.org/id/dataset-parameter/855008.rdf
Name: Depth
Units: Meters
Description: <p>Depth of trap below water surface (zero = water surface and all values are reported as positive)</p>
http://lod.bco-dmo.org/id/dataset-parameter/855009.rdf
Name: Tube_ID
Units: Unitless
Description: <p>Each letter represents trap material from a different tube at a given depth</p>
http://lod.bco-dmo.org/id/dataset-parameter/855010.rdf
Name: Start_Date_HAST
Units: Unitless
Description: <p>Date and time (Hawaii-Aleutian Standard Time, GMT-10) of deployment start; format: MM/DD/YYYY hh:mm</p>
http://lod.bco-dmo.org/id/dataset-parameter/855011.rdf
Name: End_Date_HAST
Units: Unitless
Description: <p>Date and time (Hawaii-Aleutian Standard Time, GMT-10) of deployment end; format: MM/DD/YYYY hh:mm</p>
http://lod.bco-dmo.org/id/dataset-parameter/855012.rdf
Name: Start_ISO_DateTime_UTC
Units: Unitless
Description: <p>Date and time (UTC) of deployment start in ISO8601 format: YYYY-MM-DDThh:mmZ</p>
http://lod.bco-dmo.org/id/dataset-parameter/855013.rdf
Name: End_ISO_DateTime_UTC
Units: Unitless
Description: <p>Date and time (UTC) of deployment end in ISO8601 format: YYYY-MM-DDThh:mmZ</p>
http://lod.bco-dmo.org/id/dataset-parameter/855014.rdf
Name: Latitude_In
Units: Decimal degrees
Description: <p>Latitude at time of trap deployment in degrees North</p>
http://lod.bco-dmo.org/id/dataset-parameter/855015.rdf
Name: Longitude_In
Units: Decimal degrees
Description: <p>Longitude at time of trap deployment in degrees East </p>
http://lod.bco-dmo.org/id/dataset-parameter/855016.rdf
Name: Latitude_Out
Units: Decimal degrees
Description: <p>Latitude at time of trap recovery in degrees North</p>
http://lod.bco-dmo.org/id/dataset-parameter/855017.rdf
Name: Longitude_Out
Units: Decimal degrees
Description: <p>Longitude at time of trap recovery in degrees East</p>
http://lod.bco-dmo.org/id/dataset-parameter/855018.rdf
Name: Volume
Units: Liters
Description: <p>Volume of the water sample from the trap tube that was analyzed for thorium-234</p>
http://lod.bco-dmo.org/id/dataset-parameter/855019.rdf
Name: Fraction_Trap_Material_Coll
Units: Decimal fraction
Description: <p>The G, H, I tubes were subsampled. Approximately 1/2 was used for the thorium-234 measurements. The absolute fraction of the total tube volume (i.e. the total sample collected) is indicated here.</p>
http://lod.bco-dmo.org/id/dataset-parameter/855020.rdf
Name: Th234_Flux
Units: Decays per minute (dpm) per square meter per day (dpm m-2 d-1)
Description: <p>Sinking flux of 234Th calculated from sediment trap samples</p>
http://lod.bco-dmo.org/id/dataset-parameter/855021.rdf
Name: Th234_Flux_SD
Units: Decays per minute (dpm) per square meter per day (dpm m-2 d-1)
Description: <p>Standard deviation of Th234_Flux</p>
http://lod.bco-dmo.org/id/dataset-parameter/855022.rdf
Name: Th234_Flux_QF
Units: Unitless
Description: <p>Quality flag for Th234_Flux (1 = good data)</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
https://doi.org/10.26008/1912/bco-dmo.854241.1
download
onLine
dataset
<p>Particle flux measurements from the Chief Scientist Training cruise generally followed the methods of the Hawaii Ocean Time-Series (HOT). Measurements were made at 75 meters, 150 meters, and 300 meters using multiple cylindrical particle interceptor traps deployed on a free-floating array for approximately 3 days twice during cruise KM1910 at station ALOHA. Sediment trap design and collection methods are described in Winn et al. (1991). Sediment trap tubes were split, with roughly 50% of the split going to Th-234 particulate analysis.</p>
<p>All thorium-234 data were decay corrected back to mid-deployment times. The subsampled trap material was gradually poured into 25 millimeter (mm) filter funnels containing 25 mm QMA or GFF filters (most were QMA and efficiency differences were taken into account). Once all the trap subsample liquid was filtered, the 25 mm filter was dried at low temperature for a few hours (&lt;60 degrees Celsius). Samples were mounted and prepared for beta counting according to the techniques noted in Pike et al., 2005 and Clevenger et al., 2021.</p>
Specified by the Principal Investigator(s)
<p>Data were flagged with quality indicators: 1 = Good Value.</p>
<p>Data flags are according to the SeaDataNet scheme (<a href="https://www.geotraces.org/geotraces-quality-flag-policy/">https://www.geotraces.org/geotraces-quality-flag-policy/</a>).</p>
<p dir="ltr">BCO-DMO processing description:<br />
- Adjusted field/parameter names to comply with BCO-DMO naming conventions;<br />
- Added a conventional header with dataset name, PI names, version date;<br />
- Converted dates to ISO8601 format: YYYY-MM-DDThh:mmZ;<br />
- Converted longitude values from positive degrees West to negative degrees East;<br />
- Rounded fields as requested by data submitter.</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
PI Supplied Instrument Name: PI Supplied Instrument Description:Low-level beta detectors manufactured by Risø (now Nutech) in Denmark. These instruments accept samples that can be mounted on a 25mm filter holder. These detectors have very low backgrounds, 0.17 counts per minute, and can have counting efficiencies as high as 55%. Efficiency Calibrations: The detectors are intercalibrated with each other and across the transect using low-energy U standards. Limits of Detection: Limits of detection are not reported because they are not applicable to the 234Th beta counting method. A ‘non-detect’ for 234Th or a case where there is no 234Th present (initially or after 6 months of decay) will still result in a measurable amount of background radioactivity due to the beta decay of long lived natural radionuclides that are also present. These background values are utilized and therefore, they are not reported as a non-detections of 234Th.
See: https://cafethorium.whoi.edu/services/ and https://www.nutech.dtu.dk/english/products-and-services/radiation-instruments/gm_multicounter Instrument Name: Riso Laboratory Anti-coincidence Beta Counter Instrument Short Name:Riso Beta Counter Instrument Description: Low-level beta detectors manufactured by Riso (now Nutech) in Denmark. These instruments accept samples that can be mounted on a 25mm filter holder. These detectors have very low backgrounds, 0.17 counts per minute, and can have counting efficiencies as high as 55%.
Typically used in laboratory analyses. Designed to measure low levels of beta particle emission. The systems work on the principle of anticoincidence.
PI Supplied Instrument Name: PI Supplied Instrument Description:Sediment trap array (spar buoy, radiotransmitter, strobe light, floats, trap supports, collector tubes) Instrument Name: Sediment Trap Instrument Short Name:Sediment Trap Instrument Description: Sediment traps are specially designed containers deployed in the water column for periods of time to collect particles from the water column falling toward the sea floor. In general a sediment trap has a jar at the bottom to collect the sample and a broad funnel-shaped opening at the top with baffles to keep out very large objects and help prevent the funnel from clogging. This designation is used when the specific type of sediment trap was not specified by the contributing investigator. Community Standard Description: http://vocab.nerc.ac.uk/collection/L05/current/33/
Cruise: KM1910
KM1910
R/V Kilo Moana
Community Standard Description
International Council for the Exploration of the Sea
R/V Kilo Moana
vessel
KM1910
Matthew J. Church
University of Montana
https://datadocs.bco-dmo.org/docs/305/Chief_Sci_KM1910/data_docs/matt_church_EAGER_cruise_plan_06_17_2019.pdf
Report describing KM1910
R/V Kilo Moana
Community Standard Description
International Council for the Exploration of the Sea
R/V Kilo Moana
vessel