/* DATA DESCRIPTION:
Citation:	Walter, Maren; Mette, Jonathan; Sültenfuß, Jürgen (2026): Raw noble gas data from RV POLARSTERN cruise PS137 [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.989650
Abstract:	This dataset contains raw noble gas data from water samples collected during the cruise PS137. Additional metadata was taken from the CTD rosette system with which the samples were collected. The stations were executed in July 2023 to detect possible hydrothermal plumes along the Gakkel ridge and to assess the dispersal of hydrothermal plumes. From the isotope ratio different water masses can be distinguished. The samples were taken from Niskin bottles into gas tight copper tubes and transported to the Bremen Helium Isotope Laboratory. For the analysis, the smaples were extracted with an ultra high vaccum system and transferred into a fully automated mass spectrometric system, which is composed of a two stage cryogenic chamber and a quadrupole and a sector-field mass spectrometer. The system aswell as the performance is described in detail in Sültenfuß et al. (2009). The results of double samples taken for control purposes were averaged.
Keyword(s):	Arctic Ocean; AURORA seamount; CTD/Rosette; Helium; hydrothermal activity; isotope; Lucky B; noble gas
Related to:	Schlindwein, Vera (2023): The Expedition PS137 of the Research Vessel POLARSTERN to the Arctic Ocean in 2023. Berichte zur Polar- und Meeresforschung = Reports on Polar and Marine Research, 781, 121 pp, https://doi.org/10.57738/BzPM_0781_2023
	Sültenfuß, Jürgen; Roether, Wolfgang; Rhein, Monika (2009): The Bremen mass spectrometric facility for the measurement of helium isotopes, neon, and tritium in water. Isotopes in Environmental and Health Studies, 45(2), 83-95, https://doi.org/10.1080/10256010902871929
Project(s):	Center for Marine Environmental Sciences (MARUM) (URI: https://www.marum.de/en/)
	Physical Oceanography @ AWI (AWI_PhyOce) (URI: https://www.awi.de/en/science/climate-sciences/physical-oceanography.html)
Funding:	German Research Foundation (DFG) (URI: http://www.dfg.de/en/), grant/award no. 390741603: EXC 2077: The Ocean Floor – Earth's Uncharted Interface (URI: https://gepris.dfg.de/gepris/projekt/390741603)
Coverage:	MEDIAN LATITUDE: 82.502707 * MEDIAN LONGITUDE: -5.087711 * SOUTH-BOUND LATITUDE: 81.358683 * WEST-BOUND LONGITUDE: -6.324112 * NORTH-BOUND LATITUDE: 83.806179 * EAST-BOUND LONGITUDE: -3.395741
	DATE/TIME START: 2023-07-01T01:49:27 * DATE/TIME END: 2023-07-26T15:46:44
	MINIMUM DEPTH, water: 12.178 m * MAXIMUM DEPTH, water: 4491.736 m
Event(s):	PS137_18-1 * LATITUDE: 82.609661 * LONGITUDE: -5.886405 * DATE/TIME: 2023-07-01T01:50:10 * ELEVATION: -4544.0 m * O2A REGISTRY URI: hdl:10013/sensor.ebd40c0a-11ea-427a-bb89-4b3dd1b5c3b1 * CAMPAIGN: PS137 (ALOIS) * BASIS: Polarstern (URI: https://doi.org/10.17815/jlsrf-3-163) * METHOD/DEVICE: CTD/Rosette (CTD-RO)
	PS137_22-1 * LATITUDE: 82.897592 * LONGITUDE: -6.233509 * DATE/TIME: 2023-07-03T03:56:32 * ELEVATION: -3912.0 m * O2A REGISTRY URI: hdl:10013/sensor.ebd40c0a-11ea-427a-bb89-4b3dd1b5c3b1 * CAMPAIGN: PS137 (ALOIS) * BASIS: Polarstern (URI: https://doi.org/10.17815/jlsrf-3-163) * METHOD/DEVICE: CTD/Rosette (CTD-RO)
	PS137_33-1 * LATITUDE: 82.905517 * LONGITUDE: -6.324112 * DATE/TIME: 2023-07-08T15:30:33 * ELEVATION: -4096.0 m * O2A REGISTRY URI: hdl:10013/sensor.ebd40c0a-11ea-427a-bb89-4b3dd1b5c3b1 * CAMPAIGN: PS137 (ALOIS) * BASIS: Polarstern (URI: https://doi.org/10.17815/jlsrf-3-163) * METHOD/DEVICE: CTD/Rosette (CTD-RO)
	PS137_36-1 * LATITUDE START: 82.904512 * LONGITUDE START: -6.287405 * LATITUDE END: 82.892784 * LONGITUDE END: -6.272554 * DATE/TIME START: 2023-07-10T10:18:58 * DATE/TIME END: 2023-07-10T12:42:44 * ELEVATION START: -4046.0 m * ELEVATION END: -4035.0 m * O2A REGISTRY URI: hdl:10013/sensor.ebd40c0a-11ea-427a-bb89-4b3dd1b5c3b1 * CAMPAIGN: PS137 (ALOIS) * BASIS: Polarstern (URI: https://doi.org/10.17815/jlsrf-3-163) * METHOD/DEVICE: Yoyo-CTD (CTD-yoyo)
	PS137_41-1 * LATITUDE: 82.896314 * LONGITUDE: -6.242628 * DATE/TIME: 2023-07-13T12:22:35 * ELEVATION: -3943.0 m * O2A REGISTRY URI: hdl:10013/sensor.ebd40c0a-11ea-427a-bb89-4b3dd1b5c3b1 * CAMPAIGN: PS137 (ALOIS) * BASIS: Polarstern (URI: https://doi.org/10.17815/jlsrf-3-163) * METHOD/DEVICE: CTD/Rosette (CTD-RO)
	PS137_49-1 * LATITUDE: 83.806179 * LONGITUDE: -3.413437 * DATE/TIME: 2023-07-18T13:19:22 * ELEVATION: -3099.0 m * O2A REGISTRY URI: hdl:10013/sensor.ebd40c0a-11ea-427a-bb89-4b3dd1b5c3b1 * CAMPAIGN: PS137 (ALOIS) * BASIS: Polarstern (URI: https://doi.org/10.17815/jlsrf-3-163) * METHOD/DEVICE: CTD/Rosette (CTD-RO)
	PS137_58-1 * LATITUDE START: 81.369244 * LONGITUDE START: -3.395741 * LATITUDE END: 81.358683 * LONGITUDE END: -3.401182 * DATE/TIME START: 2023-07-25T16:48:37 * DATE/TIME END: 2023-07-25T19:14:53 * ELEVATION START: -3265.0 m * ELEVATION END: -3238.0 m * O2A REGISTRY URI: hdl:10013/sensor.ebd40c0a-11ea-427a-bb89-4b3dd1b5c3b1 * CAMPAIGN: PS137 (ALOIS) * BASIS: Polarstern (URI: https://doi.org/10.17815/jlsrf-3-163) * METHOD/DEVICE: CTD/Rosette (CTD-RO) * COMMENT: Yoyo-CTD
	PS137_61-1 * LATITUDE: 81.386584 * LONGITUDE: -3.420138 * DATE/TIME: 2023-07-26T11:52:37 * ELEVATION: -3155.0 m * O2A REGISTRY URI: hdl:10013/sensor.ebd40c0a-11ea-427a-bb89-4b3dd1b5c3b1 * CAMPAIGN: PS137 (ALOIS) * BASIS: Polarstern (URI: https://doi.org/10.17815/jlsrf-3-163) * METHOD/DEVICE: CTD/Rosette (CTD-RO) * COMMENT: Yoyo-CTD
Comment:	Nml/kg, mass concentration = normal milliliter per kilogram
Parameter(s):	Event label (Event) * PI: Walter, Maren (maren.walter@uni-bremen.de, http://www.ocean.uni-bremen.de/mitarbeiter/mwalter/index_mw_eng.html)
	DATE/TIME (Date/Time) * GEOCODE * PI: Walter, Maren (maren.walter@uni-bremen.de, http://www.ocean.uni-bremen.de/mitarbeiter/mwalter/index_mw_eng.html) * METHOD/DEVICE: CTD, Sea-Bird SBE 911plus (URI: https://www.seabird.com/sbe-911plus-ctd/product?id=60761421595&callback=qs)
	Bottle number [#] (Bottle) * PI: Walter, Maren (maren.walter@uni-bremen.de, http://www.ocean.uni-bremen.de/mitarbeiter/mwalter/index_mw_eng.html)
	DEPTH, water [m] (Depth water) * GEOCODE * PI: Walter, Maren (maren.walter@uni-bremen.de, http://www.ocean.uni-bremen.de/mitarbeiter/mwalter/index_mw_eng.html) * METHOD/DEVICE: CTD, Sea-Bird SBE 911plus (URI: https://www.seabird.com/sbe-911plus-ctd/product?id=60761421595&callback=qs)
	Sample mass [g] (Samp m) * PI: Walter, Maren (maren.walter@uni-bremen.de, http://www.ocean.uni-bremen.de/mitarbeiter/mwalter/index_mw_eng.html) * METHOD/DEVICE: Ultra high vacuum (UHV) mass spectrometry
	Helium-4 [10**-5 ml/kg] (4He) * PI: Walter, Maren (maren.walter@uni-bremen.de, http://www.ocean.uni-bremen.de/mitarbeiter/mwalter/index_mw_eng.html) * METHOD/DEVICE: Ultra high vacuum (UHV) mass spectrometry * COMMENT: Nml/kg, mass concentration of 4He isotope
	Helium-3 [10**-5 ml/kg] (3He) * PI: Walter, Maren (maren.walter@uni-bremen.de, http://www.ocean.uni-bremen.de/mitarbeiter/mwalter/index_mw_eng.html) * METHOD/DEVICE: Ultra high vacuum (UHV) mass spectrometry * COMMENT: Nml/kg, mass concentration of 3He isotope
	Neon [10**-5 ml/kg] (Ne) * PI: Walter, Maren (maren.walter@uni-bremen.de, http://www.ocean.uni-bremen.de/mitarbeiter/mwalter/index_mw_eng.html) * METHOD/DEVICE: Ultra high vacuum (UHV) mass spectrometry * COMMENT: Nml/kg, mass concentration of total 20Ne + 22Ne isotopes
	Helium-3/Helium-4 ratio [10**-4] (3He/4He) * PI: Walter, Maren (maren.walter@uni-bremen.de, http://www.ocean.uni-bremen.de/mitarbeiter/mwalter/index_mw_eng.html) * METHOD/DEVICE: Ultra high vacuum (UHV) mass spectrometry
	Neon/Helium ratio (Ne/He) * PI: Walter, Maren (maren.walter@uni-bremen.de, http://www.ocean.uni-bremen.de/mitarbeiter/mwalter/index_mw_eng.html) * METHOD/DEVICE: Ultra high vacuum (UHV) mass spectrometry
	δ Helium-3 [‰] (δ3He) * PI: Walter, Maren (maren.walter@uni-bremen.de, http://www.ocean.uni-bremen.de/mitarbeiter/mwalter/index_mw_eng.html) * METHOD/DEVICE: Ultra high vacuum (UHV) mass spectrometry * COMMENT: 3He/4He isotope ratio as 100 x ([3He/4He]obs/[3He/4He]atm.- 1)
	δ Neon-22 [‰] (δ22Ne) * PI: Walter, Maren (maren.walter@uni-bremen.de, http://www.ocean.uni-bremen.de/mitarbeiter/mwalter/index_mw_eng.html) * METHOD/DEVICE: Ultra high vacuum (UHV) mass spectrometry * COMMENT: 22Ne/20Ne isotope ratio as 100 x ([22Ne/20Ne]obs/[3He/4He]atm.- 1)
License:	Creative Commons Attribution 4.0 International (CC-BY-4.0) (URI: https://creativecommons.org/licenses/by/4.0/)
Status:	Curation Level: Enhanced curation (URI: https://wiki.pangaea.de/wiki/Curation_levels)
Size:	540 data points
*/
Event	Date/Time	Bottle [#]	Depth water [m]	Samp m [g]	4He [10**-5 ml/kg]	3He [10**-5 ml/kg]	Ne [10**-5 ml/kg]	3He/4He [10**-4]	Ne/He	δ3He [‰]	δ22Ne [‰]
PS137_18-1	2023-07-01T01:49:27	4	4491.736	42.900	4.16055780	6.15E-06	18.2875740	1.48E-02	4.45508920	6.773944400	0.348560260
PS137_18-1	2023-07-01T02:03:10	5	4000.492	43.100	4.25046850	6.33E-06	18.6851250	1.49E-02	4.46120450	7.610664200	0.009965903
PS137_18-1	2023-07-01T02:08:36	7	3746.297	43.450	4.15727770	6.17E-06	18.4786070	1.48E-02	4.46980660	7.280166000	0.445550800
PS137_18-1	2023-07-01T02:13:44	8	3499.572	42.940	4.16014580	6.17E-06	18.3037510	1.48E-02	4.45543050	7.246182000	0.259362180
PS137_18-1	2023-07-01T02:18:45	10	3247.466	43.180	4.15264970	6.21E-06	18.5027610	1.49E-02	4.48350150	7.993513000	0.325715050
PS137_18-1	2023-07-01T02:20:01	11	3199.418	43.230	4.14636230	6.21E-06	18.2078060	1.50E-02	4.46582750	8.167107500	0.397293540
PS137_18-1	2023-07-01T04:07:18	15	2997.379	43.250	4.14973180	6.14E-06	18.2359190	1.48E-02	4.45026020	6.920003600	0.563776830
PS137_18-1	2023-07-01T04:17:49	18	2498.664	43.410	4.12434290	6.05E-06	18.3361180	1.47E-02	4.47447600	5.942572600	0.308555670
PS137_18-1	2023-07-01T04:28:41	19	2000.013	43.230	4.13443350	6.10E-06	18.2142780	1.48E-02	4.46871330	6.607040800	0.403023990
PS137_18-1	2023-07-01T04:48:56	21	999.494	43.390	4.09984030	6.07E-06	18.2342970	1.48E-02	4.46092900	7.032422800	0.559389260
PS137_22-1	2023-07-03T03:57:56	4	3915.390	43.510	4.17202420	6.19E-06	18.3298530	1.48E-02	4.46159420	7.252679000	0.094610242
PS137_22-1	2023-07-03T04:02:15	5	3748.449	43.180	4.20828050	6.28E-06	18.4638520	1.49E-02	4.44848810	7.779988200	0.105978880
PS137_22-1	2023-07-03T04:10:05	10	3400.457	43.440	4.19631620	6.15E-06	18.5506610	1.46E-02	4.46844540	5.826308900	0.214182650
PS137_22-1	2023-07-03T04:14:42	11	3200.378	42.630	4.15232600	6.28E-06	18.2663710	1.51E-02	4.43346960	9.217843700	0.162861250
PS137_22-1	2023-07-03T04:23:49	17	2800.299	43.420	4.18136650	6.39E-06	18.4230960	1.53E-02	4.45034920	10.418464000	0.453127150
PS137_22-1	2023-07-03T05:22:50	24	12.178	43.270	4.17045040	6.17E-06	18.3672545	1.48E-02	4.46008905	6.977085800	0.188624690
PS137_33-1	2023-07-08T20:02:35	4	3972.017	43.510	4.13565460	6.11E-06	18.3105410	1.48E-02	4.47838750	6.729185200	-0.145490250
PS137_33-1	2023-07-08T20:17:41	8	3179.185	43.450	4.13353260	6.23E-06	18.1552450	1.51E-02	4.45870760	8.972876500	0.022215309
PS137_33-1	2023-07-08T20:26:57	18	2699.356	43.400	4.20451440	6.32E-06	18.3483290	1.50E-02	4.45581260	8.648076300	0.262014250
PS137_36-1	2023-07-10T11:34:33	4	3086.645	43.330	4.12785870	6.24E-06	18.1414620	1.51E-02	4.45278170	9.188005300	0.574250100
PS137_36-1	2023-07-10T12:22:15	4	3073.277	43.330	4.12785870	6.24E-06	18.1414620	1.51E-02	4.45278170	9.188005300	0.574250100
PS137_36-1	2023-07-10T12:23:13	17	3073.494	43.320	4.16468305	6.24E-06	18.3050235	1.50E-02	4.46015625	8.250784800	0.339775180
PS137_36-1	2023-07-10T12:59:20	20	3067.100	43.320	4.17523450	6.18E-06	18.3223810	1.48E-02	4.44655080	6.986616200	0.288434010
PS137_36-1	2023-07-10T14:10:50	23	13.620	43.300	4.15537320	5.85E-06	18.9704400	1.41E-02	4.56967400	1.749668300	0.575403500
PS137_41-1	2023-07-13T11:58:47	1	3000.316	43.300	4.06671420	6.06E-06	17.9961810	1.49E-02	4.43879190	7.590174500	0.512772970
PS137_41-1	2023-07-13T12:02:40	5	3135.711	43.300	4.24174660	6.38E-06	18.6596680	1.51E-02	4.43916760	8.745835200	0.365251370
PS137_41-1	2023-07-13T12:06:04	7	3204.649	42.960	4.27042965	6.50E-06	18.6416655	1.52E-02	4.41860920	10.041207250	0.498975280
PS137_41-1	2023-07-13T12:22:46	9	3881.493	43.360	4.12562490	6.09E-06	18.1431720	1.47E-02	4.42395900	6.574896600	0.437181200
PS137_41-1	2023-07-13T12:24:28	13	3875.825	43.440	4.83203290	7.16E-06	20.5601660	1.48E-02	4.31387815	7.235582000	0.535605955
PS137_41-1	2023-07-13T12:31:07	15	3712.705	43.470	4.18164390	6.23E-06	18.3541390	1.49E-02	4.42804050	7.584145200	0.496781470
PS137_41-1	2023-07-13T12:36:27	17	3500.949	43.310	4.23343820	6.23E-06	18.6787400	1.47E-02	4.44270460	6.294742300	0.503487600
PS137_41-1	2023-07-13T12:40:16	19	3300.102	43.310	4.17373920	6.27E-06	18.2350610	1.50E-02	4.42846100	8.611152400	0.552135560
PS137_41-1	2023-07-13T12:44:58	21	3116.583	43.500	4.14843790	6.49E-06	18.0633130	1.56E-02	4.42063990	13.073552000	0.577791690
PS137_41-1	2023-07-13T13:49:17	23	13.184	43.230	4.22648940	5.82E-06	19.0738780	1.38E-02	4.55771670	-0.421660090	0.549123660
PS137_49-1	2023-07-18T13:32:43	5	2802.472	43.400	4.21134770	6.33E-06	18.6279740	1.50E-02	4.41993230	8.548496800	0.395509630
PS137_49-1	2023-07-18T13:35:08	7	2700.220	43.180	4.24001150	6.29E-06	18.6210600	1.48E-02	4.43456390	7.176296000	0.331236420
PS137_49-1	2023-07-18T13:36:34	9	2650.414	43.835	4.19457675	6.30E-06	18.4974390	1.50E-02	4.44949910	8.482967500	0.625871860
PS137_49-1	2023-07-18T13:37:49	11	2599.948	43.430	4.20966230	6.36E-06	18.4608280	1.51E-02	4.40825270	9.225982300	0.466422180
PS137_49-1	2023-07-18T13:49:58	13	2000.124	43.270	3.99535390	5.90E-06	17.6989660	1.48E-02	4.45707850	6.655404000	0.775342330
PS137_49-1	2023-07-18T14:09:47	15	1000.387	43.060	4.16232320	6.09E-06	18.5861760	1.46E-02	4.46318420	5.698159100	0.514610370
PS137_49-1	2023-07-18T14:53:58	23	18.304	42.900	4.11708940	5.75E-06	18.8294690	1.40E-02	4.61565400	0.824657200	0.399321300
PS137_58-1	2023-07-25T16:54:23	1	3071.699	43.570	4.04698500	6.05E-06	17.7272400	1.49E-02	4.43691240	8.019761900	0.507915190
PS137_58-1	2023-07-25T18:20:17	5	3319.288	43.480	4.17159050	6.13E-06	18.4295130	1.47E-02	4.45199190	6.177962500	0.500452350
PS137_58-1	2023-07-25T18:42:54	7	3144.089	42.370	4.16089090	6.16E-06	18.2201950	1.48E-02	4.44451410	6.925821200	0.579197610
PS137_58-1	2023-07-25T18:57:35	9	3246.209	43.280	4.18953590	6.29E-06	18.3544100	1.50E-02	4.44480550	8.558227900	0.450758310
PS137_58-1	2023-07-25T19:18:10	11	3149.792	43.390	4.17016520	6.09E-06	18.3562970	1.46E-02	4.45458200	5.588346500	0.318616010
PS137_58-1	2023-07-25T19:19:40	13	3100.016	43.420	4.19628380	6.36E-06	18.3415710	1.52E-02	4.46405080	9.468515900	0.318261680
PS137_58-1	2023-07-25T19:23:20	15	3000.157	43.140	4.11461150	6.04E-06	18.1741800	1.47E-02	4.46298330	6.082056300	0.470402790
PS137_58-1	2023-07-25T19:25:48	17	2900.305	43.410	4.14673610	6.13E-06	18.3192900	1.48E-02	4.46882610	6.757000900	0.335436370
PS137_58-1	2023-07-25T19:29:33	19	2799.540	43.140	4.12757500	6.19E-06	18.1474050	1.50E-02	4.48268860	8.334261300	-0.020711003
PS137_58-1	2023-07-25T19:36:02	21	2499.325	43.240	4.22635200	6.74E-06	18.0137110	1.59E-02	4.34447850	15.241206000	0.198985370
PS137_58-1	2023-07-25T20:24:47	23	17.788	43.355	4.20305275	5.79E-06	19.1849950	1.38E-02	4.62021715	-0.512797125	0.408079000
PS137_61-1	2023-07-26T12:20:39	1	2930.965	43.330	4.22782220	6.23E-06	18.6398440	1.47E-02	4.45571500	6.503479200	0.387884980
PS137_61-1	2023-07-26T13:52:30	5	2920.928	43.110	4.13788570	6.50E-06	17.9355600	1.57E-02	4.42675110	13.584986000	0.780435010
PS137_61-1	2023-07-26T14:05:12	7	2959.008	42.950	4.08737610	6.39E-06	17.9502230	1.56E-02	4.40779630	12.891762000	0.570177800
PS137_61-1	2023-07-26T14:20:09	9	2936.837	43.320	4.17388040	6.31E-06	18.3705700	1.51E-02	4.45761420	9.206110600	0.540672210
PS137_61-1	2023-07-26T14:24:02	11	2859.699	43.120	4.21195700	6.47E-06	18.3943070	1.54E-02	4.43853560	11.063440000	0.336111400
PS137_61-1	2023-07-26T14:38:28	15	2876.950	43.160	4.18778030	6.38E-06	18.4952600	1.52E-02	4.44112280	10.129911000	0.499678970
PS137_61-1	2023-07-26T15:12:31	19	3048.173	43.320	4.16640760	6.35E-06	18.3642340	1.52E-02	4.44613930	10.079023000	0.369939470
PS137_61-1	2023-07-26T15:46:44	23	1354.842	43.280	4.22918360	6.32E-06	18.4401700	1.49E-02	4.41653510	7.943825600	0.494395590