Not logged in
PANGAEA.
Data Publisher for Earth & Environmental Science

Stephens, Mark (2022): Beryllium-7 concentrations in seawater during the MOSAiC expedition [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.945403, In: Stephens, M (2022): Beryllium-7 concentrations in snow, ice, seawater, and aerosols during the MOSAiC expedition [dataset publication series]. PANGAEA, https://doi.org/10.1594/PANGAEA.945414

Always quote citation above when using data! You can download the citation in several formats below.

RIS CitationBibTeX CitationShow MapGoogle Earth

Abstract:
Pumps were used to collect seawater within the upper 60 m of the ocean for Be-7analysis. Unfiltered seawater was drawn through a pvc hose to the surface where it was passed through iron-oxide impregnated acrylic fiber filters, which adsorb the Be-7. A flow meter attached in-line to the filter compartment recorded the amount of seawater passed through each filter. To maximize Be-7 collection, two or three fibers filtering approximately 600- 700 L of seawater apiece were collected from each depth and later combined. For the mixed layer samples, water was collected from the ship's seawater intake (~8m) into barrels from which the water was passed through the iron-oxide filters as described above. The fibers were dried and shipped to Florida International University. There, the fibers were ashed, placed in a Marinelli beaker and analyzed with a high purity germanium (HPGe) gamma detector. Be-7 has a readily identifiable gamma peak at 478 keV. The detector is calibrated by adding a commercially prepared mixed solution of known gamma activities to an ashed fiber and counting it in the Marinelli geometry.
Keyword(s):
beryllium-7; central Arctic Ocean; Mosaic; winter
Project(s):
Multidisciplinary drifting Observatory for the Study of Arctic Climate (MOSAiC)
Funding:
Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Bremerhaven (AWI), grant/award no. AFMOSAiC-1_00: Multidisciplinary drifting Observatory for the Study of Arctic Climate
Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Bremerhaven (AWI), grant/award no. AWI_PS122_00: Multidisciplinary drifting Observatory for the Study of Arctic Climate / MOSAiC
National Science Foundation (NSF), grant/award no. 1753423: Collaborative Research: Defining the Atmospheric Deposition of Trace Elements into the Arctic Ocean-Ice Ecosystem During the Year-Long MOSAiC Ice Drift
Coverage:
Median Latitude: 86.536716 * Median Longitude: 58.082376 * South-bound Latitude: 83.994000 * West-bound Longitude: 12.392300 * North-bound Latitude: 88.496300 * East-bound Longitude: 115.966300
Date/Time Start: 2019-12-21T12:00:00 * Date/Time End: 2020-04-29T12:00:00
Minimum DEPTH, water: 8.0 m * Maximum DEPTH, water: 60.0 m
Event(s):
PS122/2_17-127  * Latitude: 86.688433 * Longitude: 112.410500 * Date/Time: 2019-12-21T12:46:00 * Sensor URI: sensor.awi.de * Location: Arctic Ocean * Campaign: PS122/2 (MOSAiC20192020) * Basis: Polarstern * Method/Device: Water pump (PUMP)
PS122/2_18-114  * Latitude: 86.658133 * Longitude: 115.943083 * Date/Time: 2019-12-26T10:41:00 * Sensor URI: sensor.awi.de * Location: Arctic Ocean * Campaign: PS122/2 (MOSAiC20192020) * Basis: Polarstern * Method/Device: Water pump (PUMP)
PS122/2_18-115  * Latitude: 86.677950 * Longitude: 115.966267 * Date/Time: 2019-12-27T13:10:00 * Sensor URI: sensor.awi.de * Location: Arctic Ocean * Campaign: PS122/2 (MOSAiC20192020) * Basis: Polarstern * Method/Device: Water pump (PUMP)
Parameter(s):
#NameShort NameUnitPrincipal InvestigatorMethod/DeviceComment
1 Event labelEventStephens, Mark
2 Sample IDSample IDStephens, Mark
3 DATE/TIMEDate/TimeStephens, MarkGeocode
4 LATITUDELatitudeStephens, MarkGeocode
5 LONGITUDELongitudeStephens, MarkGeocode
6 DEPTH, waterDepth watermStephens, MarkGeocode
7 Beryllium-77BeBq/m3Stephens, MarkGamma spectrometry
8 Beryllium-7, error7Be e±Stephens, MarkGamma spectrometry
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
Status:
Curation Level: Enhanced curation (CurationLevelC) * Processing Level: PANGAEA data processing level 3 (ProcLevel3)
Size:
75 data points

Data

Download dataset as tab-delimited text — use the following character encoding:

1 
Event		2 
Sample ID		3 
Date/Time		4 
Latitude		5 
Longitude		6 
Depth water [m]		7 
7Be [Bq/m3]		8 
7Be e [±]
PS122/2_17-127 mosaic 12019-12-21T12:00:0086.6884112.41058.01.6250.238
PS122/2_18-114 mosaic 22019-12-26T12:00:0086.6581115.943146.00.0500.193
PS122/2_18-115 mosaic 32019-12-27T12:00:0086.6780115.96638.01.5130.160
PS122/2_19-156 mosaic 42020-01-06T12:00:0087.1046115.14888.00.9930.155
PS122/2_20-147 mosaic 52020-01-14T12:00:0087.4091105.06028.01.0970.163
PS122/2_21-147 mosaic 62020-01-25T12:00:0087.404492.817842.00.2630.093
PS122/2_21-147mosaic 72020-01-25T12:00:0087.404492.817831.50.8450.142
PS122/2_21-148 mosaic 82020-01-26T12:00:0087.413893.52348.00.9430.132
PS122/2_22-116 mosaic 92020-02-02T12:00:0087.411793.21028.00.7480.133
PS122/2_24-27 mosaic 102020-02-11T12:00:0087.820490.102645.00.0520.083
PS122/2_24-27mosaic 112020-02-11T12:00:0087.820490.102630.00.7150.197
PS122/2_24-28 mosaic 122020-02-12T12:00:0087.860288.04948.00.8130.112
PS122/2_25-86 mosaic 132020-02-22T12:00:0088.496340.48108.00.5920.103
PS122/3_30-24 mosaic 142020-03-04T12:00:0088.095630.50378.00.5190.125
PS122/3_31-49 mosaic 152020-03-11T12:00:0087.647623.86728.00.3130.130
PS122/3_31-93 mosaic 162020-03-15T12:00:0087.273318.536437.50.2020.095
PS122/3_32-19 mosaic 172020-03-17T12:00:0086.800012.39238.00.2430.125
PS122/3_33-22 mosaic 182020-03-26T12:00:0086.193815.58798.00.2860.133
PS122/3_34-25 mosaic 192020-03-31T12:00:0085.306814.07968.00.2150.107
PS122/3_35-55 mosaic 202020-04-07T12:00:0084.503614.53588.00.1300.098
PS122/3_35-54 mosaic 212020-04-08T12:00:0084.503514.533860.00.2550.070
PS122/3_36-142 mosaic 222020-04-15T12:00:0084.326613.97788.00.1600.118
PS122/3_37-91 mosaic 232020-04-20T12:00:0084.566314.58228.00.0400.110
PS122/3_38-28 mosaic 242020-04-28T12:00:0084.037016.61108.00.1850.092
PS122/3_38-114 mosaic 252020-04-29T12:00:0083.994017.218060.00.1370.087