Lange, Benjamin Allen; Granskog, Mats A; Meyer, Hanno; Bauch, Dorothea; Smith, Madison M; von Albedyll, Luisa; Raphael, Ian; Matero, Ilkka; Salganik, Evgenii (2022): Oxygen and hydrogen isotopic ratios from sea ice bottom, false bottom ice, under-ice meltwater layer and surface melt pond samples collected during MOSAiC leg 4 (PS122.4) [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.943734
Always quote citation above when using data! You can download the citation in several formats below.
Abstract:
Oxygen and hydrogen isotopic ratio samples were collected from sea ice and water samples. Coring and sampling were completed at six locations on July 25 for measurement of salinity and stable oxygen isotopic composition to better understand the meltwater sources for under-ice meltwater and false bottoms. Cores were collected using a corer (9 cm inner diameter; Mark II coring system, Kovacs Enterprises, US), and ice samples were collected from the bottom 10 centimeters of the ice core in 5 cm increments (0-5 and 5-10 cm above the bottom) and from the false bottom ice. Under-ice meltwater layer samples and water from directly below the false bottom were collected using a peristaltic pump. In order to minimize contamination from coring activities, under-ice meltwater samples from the meltwater layer in the void space between ice and false bottom were collected prior to coring through the false bottom. Surface melt pond water samples were collected by dipping plastic sample cups (rinsed with milliQ water) in the melt ponds where cores were collected, prior to ice coring. In total, ice samples were collected from six cores –– five of which included false bottoms –– and water samples were collected from four surface melt ponds, three under-ice melt water layers, and seawater beneath false bottoms at four locations. Locations are shown on map (Figure 2) as pink dashes. Ice samples were melted onboard the R/V Polarstern, and salinities of all water and ice samples were measured onboard using a calibrated YSI model 30 probe (salinity is given in PSS-78 scale, unitless). Vials for oxygen isotope composition were shipped to the AlfredWegener Institute (AWI) ISOLAB Facility in Potsdam, Germany, where they were analyzed for stable water isotopes with Finnigan MAT Delta-S mass spectrometers using equilibration techniques. The oxygen isotope composition is given as per mil difference relative to VSMOW (‰, Vienna Standard Mean Ocean Water), with an internal 1 sigma error better than 0.1‰ for delta 18O (Meyer et al., 2000). See attached diagram for a visualization of where the samples were collected.
Keyword(s):
Supplement to:
Smith, Madison M; von Albedyll, Luisa; Raphael, Ian; Lange, Benjamin Allen; Matero, Ilkka; Salganik, Evgenii; Webster, Melinda; Granskog, Mats A; Fong, Allison A; Lei, Ruibo; Light, Bonnie (2022): Quantifying false bottoms and under-ice meltwater layers beneath Arctic summer sea ice with fine-scale observations. Elementa - Science of the Anthropocene, 10(1), 000116, https://doi.org/10.1525/elementa.2021.000116
Further details:
Meyer, Hanno; Schönicke, Lutz; Wand, Ulrich; Hubberten, Hans-Wolfgang; Friedrichsen, Hans (2000): Isotope Studies of Hydrogen and Oxygen in Ground Ice - Experiences with the Equilibration Technique. Isotopes in Environmental and Health Studies, 36(2), 133-149, https://doi.org/10.1080/10256010008032939
Project(s):
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
The Research Council of Norway (RCN), grant/award no. 280292: Ridges - Safe HAVens for ice-associated Flora and Fauna in a Seasonally ice-covered Arctic OCean
Coverage:
Latitude: 79.941760 * Longitude: -0.777710
Date/Time Start: 2020-07-25T00:00:00 * Date/Time End: 2020-07-25T00:00:00
Minimum Elevation: -2634.7 m * Maximum Elevation: -2634.7 m
Event(s):
PS122/4_48-158 * Latitude: 79.945362 * Longitude: -0.763653 * Date/Time: 2020-07-25T11:45:00 * Elevation: -2634.7 m * O2A Registry URI: sensor.awi.de * Location: Arctic Ocean * Campaign: PS122/4 (MOSAiC20192020) * Basis: Polarstern * Method/Device: Ice corer (IC) * Comment: False Bottom Coring/Drilling Transect (near FYI coring to DroneVille). Along drilling transect, 6 cores extracted at X = 0m (false bottom), 10m, -11m, 60m, 175m (False bottom), Y=5m (false bottom).
Parameter(s):
# | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
---|---|---|---|---|---|---|
1 | Gear | Gear | Lange, Benjamin Allen | |||
2 | LATITUDE | Latitude | Lange, Benjamin Allen | Geocode – coordinates of the Central Observatory at the time of sampling | ||
3 | LONGITUDE | Longitude | Lange, Benjamin Allen | Geocode – coordinates of the Central Observatory at the time of sampling | ||
4 | Location | Location | Lange, Benjamin Allen | false bottom sampling event and location | ||
5 | DATE/TIME | Date/Time | Lange, Benjamin Allen | Geocode | ||
6 | Sample ID | Sample ID | Lange, Benjamin Allen | unique identifier for each sample | ||
7 | Salinity | Sal | Lange, Benjamin Allen | PSU | ||
8 | Description | Description | Lange, Benjamin Allen | identifies which part of the sea ice, surface water or melt pond the sample was taken (see also attached figure for visual diagram) | ||
9 | DEPTH, ice/snow | Depth ice/snow | m | Lange, Benjamin Allen | Geocode – the top of the ice section (from the ice surface) from where the sample was collected. this is only applicable to the ice core sections, not false bottoms or water samples | |
10 | DEPTH, ice/snow | Depth ice/snow | m | Lange, Benjamin Allen | Geocode – the bottom of the ice section (from the ice surface) from where the sample was collected. this is only applicable to the ice core sections, not false bottoms or water samples | |
11 | δ18O, water | δ18O H2O | ‰ SMOW | Lange, Benjamin Allen | Mass spectrometer Finnigan MAT Delta-S (ISOLAB) | ppt, vs. VSMOW |
12 | δ Deuterium, water | δD H2O | ‰ SMOW | Lange, Benjamin Allen | Mass spectrometer Finnigan MAT Delta-S (ISOLAB) | ppt, vs. VSMOW |
13 | DISTANCE | Distance | cm | Lange, Benjamin Allen | Geocode – sampling location along the transect (unique location) shown in Smith et al., (under review) | |
14 | Core length | Core length | cm | Lange, Benjamin Allen | length of the full ice core extracted | |
15 | False bottom pucks | False bottom puck | # | Lange, Benjamin Allen | ||
16 | Comment | Comment | Lange, Benjamin Allen | additional information |
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:
279 data points
Data
1 Gear | 2 Latitude (coordinates of the Central Ob...) | 3 Longitude (coordinates of the Central Ob...) | 4 Location (false bottom sampling event a...) | 5 Date/Time | 6 Sample ID (unique identifier for each sa...) | 7 Sal (PSU) | 8 Description (identifies which part of the ...) | 9 Depth ice/snow [m] (the top of the ice section (f...) | 10 Depth ice/snow [m] (the bottom of the ice section...) | 11 δ18O H2O [‰ SMOW] (ppt, vs. VSMOW) | 12 δD H2O [‰ SMOW] (ppt, vs. VSMOW) | 13 Distance [cm] (sampling location along the t...) | 14 Core length [cm] (length of the full ice core e...) | 15 False bottom puck [#] | 16 Comment (additional information) |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
SI_corer_9cm | 79.94176 | -0.77771 | Falsebottom study | 2020-07-25 | PS122-4_48-158_TxFB-DO18-1 | 0.7 | Bot 5-10 | 1.10 | 1.15 | -1.743334190 | -12.194698780 | 0 | 120 | 2 | bottom ice, pucks, void water and melt pond samples taken for salinity and O18 |
SI_corer_9cm | 79.94176 | -0.77771 | Falsebottom study | 2020-07-25 | PS122-4_48-158_TxFB-DO18-2 | 0.9 | Bot 0-5 | 1.15 | 1.20 | -4.873523043 | -38.318798240 | 0 | 120 | 2 | bottom ice, pucks, void water and melt pond samples taken for salinity and O18 |
SI_corer_9cm | 79.94176 | -0.77771 | Falsebottom study | 2020-07-25 | PS122-4_48-158_TxFB-DO18-3 | 6.8 | void | -4.270335604 | -32.200164720 | 0 | 120 | 2 | bottom ice, pucks, void water and melt pond samples taken for salinity and O18 | ||
SI_corer_9cm | 79.94176 | -0.77771 | Falsebottom study | 2020-07-25 | PS122-4_48-158_TxFB-DO18-4 | 1.9 | puck 1 | -4.249911406 | -32.595743620 | 0 | 120 | 2 | bottom ice, pucks, void water and melt pond samples taken for salinity and O18 | ||
SI_corer_9cm | 79.94176 | -0.77771 | Falsebottom study | 2020-07-25 | PS122-4_48-158_TxFB-DO18-5 | 1.5 | puck 2 | -3.441331084 | -26.226455300 | 0 | 120 | 2 | bottom ice, pucks, void water and melt pond samples taken for salinity and O18 | ||
SI_corer_9cm | 79.94176 | -0.77771 | Falsebottom study | 2020-07-25 | PS122-4_48-158_TxFB-DO18-6 | 0.6 | melt pond | -8.390286835 | -64.145422310 | 0 | 120 | 2 | bottom ice, pucks, void water and melt pond samples taken for salinity and O18 | ||
SI_corer_9cm | 79.94176 | -0.77771 | Falsebottom study | 2020-07-25 | PS122-4_48-158_TxFB-DO18-7 | 4.8 | Bot 5-10 | 2.69 | 2.74 | 0.029559136 | 1.008605752 | 10 | 263 | botom ice (5 + 5 cm pieces), melt pond and under-ice water samples | |
SI_corer_9cm | 79.94176 | -0.77771 | Falsebottom study | 2020-07-25 | PS122-4_48-158_TxFB-DO18-8 | 4.3 | Bot 0-5 | 2.74 | 2.79 | -0.064077493 | 1.227041920 | 10 | 263 | botom ice (5 + 5 cm pieces), melt pond and under-ice water samples | |
SI_corer_9cm | 79.94176 | -0.77771 | Falsebottom study | 2020-07-25 | PS122-4_48-158_TxFB-DO18-9 | 1.0 | melt pond | -8.621830935 | -64.662002370 | 10 | 263 | botom ice (5 + 5 cm pieces), melt pond and under-ice water samples | |||
SI_corer_9cm | 79.94176 | -0.77771 | Falsebottom study | 2020-07-25 | PS122-4_48-158_TxFB-DO18-10 | 28.4 | under-ice water | -2.265758897 | -15.637762360 | 10 | 263 | botom ice (5 + 5 cm pieces), melt pond and under-ice water samples | |||
SI_corer_9cm | 79.94176 | -0.77771 | Falsebottom study | 2020-07-25 | PS122-4_48-158_TxFB-DO18-11 | 3.1 | Bot 5-10 | 1.52 | 1.57 | 0.351718060 | 4.533998885 | -11 | 157 | botom ice (5 + 5 cm pieces), (same melt pond as 0 m sample) and under-ice water samples | |
SI_corer_9cm | 79.94176 | -0.77771 | Falsebottom study | 2020-07-25 | PS122-4_48-158_TxFB-DO18-12 | 2.6 | Bot 0-5 | 1.57 | 1.63 | 0.527202715 | 5.229937748 | -11 | 157 | botom ice (5 + 5 cm pieces), (same melt pond as 0 m sample) and under-ice water samples | |
SI_corer_9cm | 79.94176 | -0.77771 | Falsebottom study | 2020-07-25 | PS122-4_48-158_TxFB-DO18-13 | 29.8 | under-ice water | -2.311326277 | -17.007317980 | -11 | 157 | botom ice (5 + 5 cm pieces), (same melt pond as 0 m sample) and under-ice water samples | |||
SI_corer_9cm | 79.94176 | -0.77771 | Falsebottom study | 2020-07-25 | PS122-4_48-158_TxFB-DO18-14 | 4.2 | Bot 5-10 | 2.81 | 2.86 | 0.293640811 | 3.795248853 | 60 | 291 | botom ice (5 + 5 cm pieces), (same melt pond as 0 m sample) and under-ice water samples | |
SI_corer_9cm | 79.94176 | -0.77771 | Falsebottom study | 2020-07-25 | PS122-4_48-158_TxFB-DO18-15 | 3.8 | Bot 0-5 | 2.86 | 2.91 | 0.349899075 | 3.176842146 | 60 | 291 | botom ice (5 + 5 cm pieces), (same melt pond as 0 m sample) and under-ice water samples | |
SI_corer_9cm | 79.94176 | -0.77771 | Falsebottom study | 2020-07-25 | PS122-4_48-158_TxFB-DO18-16 | 29.9 | under-ice water | -2.326542475 | -16.539671160 | 60 | 291 | botom ice (5 + 5 cm pieces), (same melt pond as 0 m sample) and under-ice water samples | |||
SI_corer_9cm | 79.94176 | -0.77771 | Falsebottom study | 2020-07-25 | PS122-4_48-158_TxFB-DO18-17 | 1.2 | melt pond | -2.924859806 | -20.611870640 | 60 | 291 | melt pond | |||
SI_corer_9cm | 79.94176 | -0.77771 | Falsebottom study | 2020-07-25 | PS122-4_48-158_TxFB-DO18-18 | 1.8 | Bot 5-10 | 0.43 | 0.48 | 0.425582174 | 3.883619898 | 175 | 53 | 1 | bottom ice (5 + 5 cm pieces), void water, puck, platelet ice, under ice water and melt pond water samples |
SI_corer_9cm | 79.94176 | -0.77771 | Falsebottom study | 2020-07-25 | PS122-4_48-158_TxFB-DO18-19 | 0.8 | Bot 0-5 | 0.48 | 0.53 | -0.449080619 | -3.880722472 | 175 | 53 | 1 | bottom ice (5 + 5 cm pieces), void water, puck, platelet ice, under ice water and melt pond water samples |
SI_corer_9cm | 79.94176 | -0.77771 | Falsebottom study | 2020-07-25 | PS122-4_48-158_TxFB-DO18-20 | 2.3 | platelet ice from hole | -1.116337066 | -9.227741440 | 175 | 53 | 1 | bottom ice (5 + 5 cm pieces), void water, puck, platelet ice, under ice water and melt pond water samples | ||
SI_corer_9cm | 79.94176 | -0.77771 | Falsebottom study | 2020-07-25 | PS122-4_48-158_TxFB-DO18-21 | 3.5 | puck 1 | -0.762235283 | -6.868398523 | 175 | 53 | 1 | bottom ice (5 + 5 cm pieces), void water, puck, platelet ice, under ice water and melt pond water samples | ||
SI_corer_9cm | 79.94176 | -0.77771 | Falsebottom study | 2020-07-25 | PS122-4_48-158_TxFB-DO18-22 | 1.9 | melt pond | -2.341421325 | -17.787888680 | 175 | 53 | 1 | bottom ice (5 + 5 cm pieces), void water, puck, platelet ice, under ice water and melt pond water samples | ||
SI_corer_9cm | 79.94176 | -0.77771 | Falsebottom study | 2020-07-25 | PS122-4_48-158_TxFB-DO18-23 | 8.7 | void | -2.325957385 | -18.223501410 | 175 | 53 | 1 | bottom ice (5 + 5 cm pieces), void water, puck, platelet ice, under ice water and melt pond water samples | ||
SI_corer_9cm | 79.94176 | -0.77771 | Falsebottom study | 2020-07-25 | PS122-4_48-158_TxFB-DO18-24 | 24.9 | under-ice water | -2.097472797 | -15.976966260 | 175 | 53 | 1 | bottom ice (5 + 5 cm pieces), void water, puck, platelet ice, under ice water and melt pond water samples | ||
SI_corer_9cm | 79.94176 | -0.77771 | Falsebottom study | 2020-07-25 | PS122-4_48-158_TxFB-DO18-25 | 0.9 | Bot 5-10 | 0.75 | 0.80 | -3.339635566 | -25.016645170 | 5 | 85 | 2 | bottom ice (5 + 5 cm pieces), void water, pucks x 2, (melt pond is the same as 0 and -11 m, under ice water same/similar as 0 and -11 m) |
SI_corer_9cm | 79.94176 | -0.77771 | Falsebottom study | 2020-07-25 | PS122-4_48-158_TxFB-DO18-26 | 0.5 | Bot 0-5 | 0.80 | 0.85 | -5.384640742 | -42.298867830 | 5 | 85 | 2 | bottom ice (5 + 5 cm pieces), void water, pucks x 2, (melt pond is the same as 0 and -11 m, under ice water same/similar as 0 and -11 m) |
SI_corer_9cm | 79.94176 | -0.77771 | Falsebottom study | 2020-07-25 | PS122-4_48-158_TxFB-DO18-27 | 1.4 | puck 1 | -2.618392944 | -21.742071270 | 5 | 85 | 2 | bottom ice (5 + 5 cm pieces), void water, pucks x 2, (melt pond is the same as 0 and -11 m, under ice water same/similar as 0 and -11 m) | ||
SI_corer_9cm | 79.94176 | -0.77771 | Falsebottom study | 2020-07-25 | PS122-4_48-158_TxFB-DO18-28 | 2.3 | puck 2 | -2.739962775 | -21.754167210 | 5 | 85 | 2 | bottom ice (5 + 5 cm pieces), void water, pucks x 2, (melt pond is the same as 0 and -11 m, under ice water same/similar as 0 and -11 m) | ||
SI_corer_9cm | 79.94176 | -0.77771 | Falsebottom study | 2020-07-25 | PS122-4_48-158_TxFB-DO18-29 | 16.3 | void | -2.752026965 | -20.134740840 | 5 | 85 | 2 | bottom ice (5 + 5 cm pieces), void water, pucks x 2, (melt pond is the same as 0 and -11 m, under ice water same/similar as 0 and -11 m) |