ALBERT

All Library Books, journals and Electronic Records Telegrafenberg

X
feed icon rss

Your email was sent successfully. Check your inbox.

An error occurred while sending the email. Please try again.

Proceed reservation?

Export
Filter
  • Data  (6)
  • Other Sources  (90)
Collection
Source
Keywords
Publisher
Years
  • 1
    facet.materialart.
    Unknown
    Rare earth elements measured on water bottle samples at BATS (2017)
    PANGAEA
    Details
    Publication Date: 2023-03-10
    Keywords: BATS15m; Cerium, dissolved; CTD/Rosette; CTD-RO; DEPTH, water; Dysprosium, dissolved; Erbium, dissolved; Europium, dissolved; Gadolinium, dissolved; GEOTRACES; Global marine biogeochemical cycles of trace elements and their isotopes; Holmium, dissolved; Lanthanum, dissolved; Lutetium, dissolved; Neodymium, dissolved; Praseodymium, dissolved; Samarium, dissolved; South Atlantic Ocean; Terbium, dissolved; Thulium, dissolved; Ytterbium, dissolved; Yttrium, dissolved
    Type: Dataset
    Format: text/tab-separated-values, 225 data points
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    DATA PANGAEA
  • 2
    facet.materialart.
    Unknown
    Rare earth elements measured on water bottle samples at BATS (2017)
    PANGAEA
    Details
    Publication Date: 2023-03-10
    Keywords: BATS2000m; Cerium, dissolved; CTD/Rosette; CTD-RO; DEPTH, water; Dysprosium, dissolved; Erbium, dissolved; Europium, dissolved; Gadolinium, dissolved; GEOTRACES; Global marine biogeochemical cycles of trace elements and their isotopes; Holmium, dissolved; Lanthanum, dissolved; Lutetium, dissolved; Neodymium, dissolved; Praseodymium, dissolved; Samarium, dissolved; South Atlantic Ocean; Terbium, dissolved; Thulium, dissolved; Ytterbium, dissolved; Yttrium, dissolved
    Type: Dataset
    Format: text/tab-separated-values, 195 data points
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    DATA PANGAEA
  • 3
    facet.materialart.
    Unknown
    Neodymium isotopes and rare earth elements measured on water bottle samples during cruise TDXXI and TDXXII (2017)
    PANGAEA
    Details
    Publication Date: 2023-02-24
    Keywords: Classification; Conductivity; CTD/Rosette; CTD-RO; Density, sigma500; Density, sigma-theta (0); DEPTH, water; Elevation of event; Event label; GEOTRACES; Global marine biogeochemical cycles of trace elements and their isotopes; Laptev Sea; Latitude of event; Longitude of event; Neodymium, dissolved; Neodymium-143/Neodymium-144 ratio; Neodymium-143/Neodymium-144 ratio, standard deviation; Pressure, water; Salinity; Sample ID; TDXXI-19; TDXXII-17; Temperature, water; Temperature, water, potential; ε-Neodymium; ε-Neodymium, standard deviation
    Type: Dataset
    Format: text/tab-separated-values, 25 data points
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    DATA PANGAEA
  • 4
    facet.materialart.
    Unknown
    Analysis of Nd isotope, REE and oxygen isotope ratios on water samples across Fram Strait (2017)
    PANGAEA
    In:  Supplement to: Laukert, Georgi; Frank, Martin; Bauch, Dorothea; Hathorne, Ed C; Rabe, Benjamin; von Appen, Wilken-Jon; Wegner, Carolyn; Zieringer, Moritz; Kassens, Heidemarie (2017): Ocean circulation and freshwater pathways in the Arctic Mediterranean based on a combined Nd isotope, REE and oxygen isotope section across Fram Strait. Geochimica et Cosmochimica Acta, 202, 285-309, https://doi.org/10.1016/j.gca.2016.12.028
    Details
    Publication Date: 2023-04-03
    Description: The water masses passing the Fram Strait are mainly responsible for the exchange of heat and freshwater between the Nordic Seas and the Arctic Ocean (the Arctic Mediterranean, AM). Disentangling their exact sources, distribution and mixing, however, is complex. This work provides new insights based on a detailed geochemical tracer inventory including dissolved Nd isotope (e-Nd), rare earth element (REE) and stable oxygen isotope (d18O) data along a full water depth section across Fram Strait. We find that Nd isotope and REE distributions in the open AM primarily reflect lateral advection of water masses and their mixing. Seawater-particle interactions exert important control only above the shelf regions, as observed above the NE Greenland Shelf. Advection of northward flowing warm Atlantic Water (AW) is clearly reflected by an e-Nd signature of -11.7 and a Nd concentration ([Nd]) of 16 pmol/kg in the upper ~500 m of the eastern and central Fram Strait. Freshening and cooling of the AW on its way trough the AM are accompanied by a continuous change towards more radiogenic e-Nd signatures (e.g. -10.4 of dense Arctic Atlantic Water). This mainly reflects mixing with intermediate waters but also admixture of dense Kara Sea waters and Pacific-derived waters. The more radiogenic e-Nd signatures of the intermediate and deep waters (reaching -9.5) are mainly acquired in the SW Nordic Seas through exchange with basaltic formations of Iceland and CE Greenland. Inputs of Nd from Svalbard are not observed and surface waters and Nd on the Svalbard shelf originate from the Barents Sea. Shallow southward flowing Arctic-derived waters (〈200 m) form the core of the East Greenland Current above the Greenland slope and can be traced by their relatively radiogenic e-Nd (reaching -8.8) and elevated [Nd] (21-29 pmol/kg). These properties are used together with d18O and standard hydrographic tracers to define the proportions of Pacific-derived (〈~30% based on Nd isotopes) and Atlantic-derived waters, as well as of river waters (〈~8%). Shallow waters (〈150 m) on the NE Greenland Shelf share some characteristics of Arctic-derived waters, but exhibit less radiogenic epsilon-Nd values (reaching -12.4) and higher [Nd] (up to 38 pmol/kg) in the upper ~100 m. This suggests local addition of Greenland freshwater of up to ~6%. In addition to these observations, this study shows that the pronounced gradients in epsilon-Nd signatures and REE characteristics in the upper water column provide a reliable basis for assessments of shallow hydrological changes within the AM.
    Keywords: GEOTRACES; Global marine biogeochemical cycles of trace elements and their isotopes
    Type: Dataset
    Format: application/zip, 4 datasets
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    DATA PANGAEA
  • 5
    facet.materialart.
    Unknown
    Neodymium isotopes and rare earth elements measured on water bottle samples during POLARSTERN cruise ARK-XXVII/1 (2017)
    PANGAEA
    Details
    Publication Date: 2023-12-01
    Keywords: ARK-XXVII/1; Attenuation, optical beam transmission; Calculated; Calculated, PAAS-normalized (McLennan, 2001); Cerium, dissolved; Cerium anomaly; Classification; Conductivity; CTD/Rosette; CTD-RO; Date/Time of event; Density, sigma1500; Density, sigma2500; Density, sigma500; Density, sigma-theta (0); DEPTH, water; Dysprosium, dissolved; Elevation of event; Erbium, dissolved; Europium, dissolved; Event label; Fluorometer; Gadolinium, dissolved; GEOTRACES; Global marine biogeochemical cycles of trace elements and their isotopes; Heavy rare-earth elements/light rare-earth elements ratio; Holmium, dissolved; Isotope dilution; Lanthanum, dissolved; Latitude of event; Longitude of event; Lutetium, dissolved; Middle rare-earth elements anomaly; Neodymium, dissolved; Neodymium-143/Neodymium-144 ratio; Neodymium-143/Neodymium-144 ratio, standard deviation; North Greenland Sea; Oxygen; Oxygen saturation; Polarstern; Praseodymium, dissolved; Pressure, water; PS80; PS80/013-1; PS80/016-1; PS80/019-1; PS80/026-1; PS80/050-1; PS80/055-1; PS80/068-1; PS80/086-1; PS80/092-1; PS80/097-1; PS80/106-1; PS80/110-1; PS80/113-1; PS80/118-1; PS80/121-1; PS80/124-1; PS80/126-1; PS80/130-1; PS80/132-1; PS80/134-1; Salinity; Samarium, dissolved; Sample ID; Temperature, water; Temperature, water, potential; Terbium, dissolved; Thulium, dissolved; Ytterbium, dissolved; Yttrium, dissolved; ε-Neodymium; ε-Neodymium, standard deviation
    Type: Dataset
    Format: text/tab-separated-values, 3962 data points
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    DATA PANGAEA
  • 6
    facet.materialart.
    Unknown
    Physical oceanography and hydrochemistry from the Laptev Sea, Arctic Ocean (2009)
    PANGAEA
    In:  Supplement to: Bauch, Dorothea; Dmitrenko, Igor; Wegner, Carolyn; Hölemann, Jens A; Kirillov, Sergey A; Timokhov, Leonid; Kassens, Heidemarie (2009): Exchange of Laptev Sea and Arctic Ocean halocline waters in response to atmospheric forcing. Journal of Geophysical Research: Oceans, 114, C05008, https://doi.org/10.1029/2008JC005062
    Details
    Publication Date: 2024-04-16
    Description: Combined d18O/salinity data reveal a distinctive water mass generated during winter sea ice formation which is found predominantly in the coastal polynya region of the southern Laptev Sea. Export of the brine-enriched bottom water shows interannual variability in correlation with atmospheric conditions. Summer anticyclonic circulation is favoring an offshore transport of river water at the surface as well as a pronounced signal of brine-enriched waters at about 50 m water depth at the shelf break. Summer cyclonic atmospheric circulation favors onshore or an eastward, alongshore water transport, and at the shelf break the river water fraction is reduced and the pronounced brine signal is missing, while on the middle Laptev Sea shelf, brine-enriched waters are found in high proportions. Residence times of bottom and subsurface waters on the shelf may thereby vary considerably: an export of shelf waters to the Arctic Ocean halocline might be shut down or strongly reduced during "onshore" cyclonic atmospheric circulation, while with "offshore" anticyclonic atmospheric circulation, brine waters are exported and residence times may be as short as 1 year only.
    Keywords: ARK-XIV/1b; CTD/Rosette; CTD-RO; East Siberian Sea; Giant box corer; GKG; Helicopter; IK03-01-A; IK03-02-A; IK03-03-A; IK03-03-B; IK03-04-A; IK03-05-A; IK03-06-A; IK03-07-A; IK03-08-A; IK03-09-A; IK03-10-A; IK03-11-A; IK03-12-A; IK03-13-A; IK03-14-A; IK03-15-A; IK03-16-A; IK03-17-A; IK03-18-A; IK03-19-A; IK03-20-A; IK03-21-A; IK03-22-A; IK03-23-A; IK93_1; IK93_10; IK93_100; IK93_101; IK93_102; IK93_103; IK93_104; IK93_105; IK93_106; IK93_107; IK93_108; IK93_109; IK93_11; IK93_110; IK93_111; IK93_112; IK93_113; IK93_114; IK93_115; IK93_116; IK93_117; IK93_118; IK93_119; IK93_12; IK93_120; IK93_121; IK93_122; IK93_123; IK93_124; IK93_125; IK93_126; IK93_127; IK93_128; IK93_129; IK93_13; IK93_130; IK93_131; IK93_14; IK93_15; IK93_16; IK93_17; IK93_18; IK93_19; IK93_2; IK93_20; IK93_21; IK93_22; IK93_23; IK93_24; IK93_25; IK93_26; IK93_27; IK93_28; IK93_29; IK93_3; IK93_30; IK93_31; IK93_32; IK93_33; IK93_34; IK93_35; IK93_36; IK93_37; IK93_38; IK93_38a; IK93_39; IK93_4; IK93_40; IK93_41; IK93_42; IK93_43; IK93_44; IK93_45; IK93_45a; IK93_46; IK93_47; IK93_48; IK93_49; IK93_5; IK93_50; IK93_51; IK93_52; IK93_53; IK93_54; IK93_55; IK93_56; IK93_57; IK93_58; IK93_59; IK93_6; IK93_60; IK93_61; IK93_62; IK93_63; IK93_64; IK93_65; IK93_66; IK93_67; IK93_68; IK93_69; IK93_7; IK93_70; IK93_71; IK93_72; IK93_73; IK93_74; IK93_75; IK93_76; IK93_77; IK93_78; IK93_79; IK93_8; IK93_80; IK93_81; IK93_82; IK93_83; IK93_84; IK93_85; IK93_86; IK93_87; IK93_88; IK93_89; IK93_9; IK93_90; IK93_91; IK93_92; IK93_93; IK93_94; IK93_95; IK93_96; IK93_97; IK93_98; IK93_99; Ivan Kireyev; Kapitan Dranitsyn; Kara Sea; KD9501-1; KD9502-1; KD9502-2; KD9502-3; KD9502-4; KD9503-1; KD9504-1; KD9505-1; KD9506-1; KD9507-1; KD9508-1; KD9509-1; KD9510-1; KD9511-1; KD9512-1; KD9513-1; KD9514-1; KD9515-1; KD9516-1; KD9517-1; KD9518-1; KD9519-1; KD9520-1; KD9521-1; KD9522-1; KD9523-1; KD9524-1; KD9525-1; KD9526-1; KD9527-1; KD9528-1; KD9529-1; KD9530-1; KD9531-1; KD9532-1; KD9533-1; KD9534-1; KD9536-1; KD9538-1; KD9540-1; KD9541-1; KD9543-1; KD9545-1; KD9546-1; KD9547-1; KD9548-1; KD9549-1; KD9550-1; KD9551-1; KD9552-1; KD9553-1; KD9554-1; KD9555-1; KD9556-1; KD9557-1; KD9558-1; KD9559-1; KD9560-1; KD9564-1; KD9565-1; KD9566-1; KD9567-1; KD9568-1; KD9569-1; KD9570-1; KD9571-1; KD9573-1; KD9574-1; Laptev Sea; Laptev Sea System; Lena Nordenskøld Station; LN9601-1; LN9602-1; LN9603-1; LN9603A-2; LN9603B-2; LN9604-1; LN9604A-2; LN9604B-2; LN9605-1; LN9605A-1; LN9605B-1; LN9606-1; LN9606A-2; LN9606B-2; LN9608-2; LN9608A-3; LN9608B-2; LN9609-1; LN9609A-2; LN9609B-2; LN9610-1; LN9610A-2; LN9610B-1; LN9611-2; LN9611A-3; LN9611B-3; LN9612-1; LN9613-1; LN9614-1; LN9615-1; LN9616-1; LN9617-1; LN9618-1; LN9619-1; LN9620-1; LN9620A-2; LN9621-1; LN9621A-2; LN9622-1; LN9623-1; LN9623A-2; LN9624-2; LN9624A-1; LN9625-1; LSS; MULT; Multiple investigations; PM9401-1; PM9401-2; PM9401-3; PM9402-1; PM9402-2; PM9402-3; PM9402-4; PM9402-5; PM9402-6; PM9402-7; PM9403-1; PM9403-2; PM9404-1; PM9405-1; PM9405-2; PM9406-1; PM9407-1; PM9407-2; PM9408-1; PM9409-1; PM94100-1; PM9410-1; PM94101-1; PM9410-2; PM9411-1; PM9412-1; PM9413-1; PM9413-10; PM9413-11; PM9413-12; PM9413-13; PM9413-2; PM9413-3; PM9413-4; PM9413-5; PM9413-6; PM9413-7; PM9413-8; PM9413-9; PM9414-1; PM9415-1; PM9415-2; PM9416-1; PM9416-2; PM9417-1; PM9417-10; PM9417-11; PM9417-12; PM9417-13; PM9417-14; PM9417-15; PM9417-16; PM9417-17; PM9417-2; PM9417-3; PM9417-4; PM9417-5; PM9417-6; PM9417-7; PM9417-8; PM9417-9; PM9418-1; PM9418-2; PM9419-1; PM9419-2; PM9419-3; PM9420-1; PM9420-2; PM9421-1; PM9421-2; PM9422-1; PM9423-1; PM9424; PM9424-1; PM9424-10; PM9424-11; PM9424-12; PM9424-13; PM9424-14; PM9424-15; PM9424-16; PM9424-17; PM9424-18; PM9424-2; PM9424-20; PM9424-3; PM9424-4; PM9424-5; PM9424-6; PM9424-7; PM9424-8; PM9424-9; PM9425-1; PM9426-1; PM9426-2; PM9427-1; PM9427-2; PM9428-1; PM9428-2; PM9429-1; PM9429-2; PM9430-1; PM9430-2; PM9431-1; PM9431-2; PM9432-1; PM9432-2; PM9433-1; PM9433-2; PM9434-1; PM9435-1; PM9436-1; PM9436-2; PM9437-1; PM9437-2; PM9437-3; PM9438-1; PM9438-2; PM9439-1; PM9440-1; PM9440-2; PM9441-1; PM9441-2; PM9442-1; PM9442-2; PM9442-3; PM9442-4; PM9442-5; PM9442-6; PM9442-7; PM9442-8; PM9443-1; PM9443-2; PM9444-1; PM9444-2; PM9445-1; PM9445-10; PM9445-11; PM9445-12; PM9445-13; PM9445-14; PM9445-15; PM9445-16; PM9445-17; PM9445-2; PM9445-3; PM9445-4; PM9445-6; PM9445-7; PM9445-8; PM9445-9; PM9446-1; PM9447-1; PM9448-1; PM9449-1; PM9449-2; PM9450-1; PM9451-1; PM9452-1; PM9453-1; PM9454-1; PM9455-1; PM9456-1; PM9457-1; PM9458-1; PM9459-1; PM9460-1; PM9461-1; PM9462-1; PM9462-2; PM9463; PM9463-1; PM9463-10; PM9463-11; PM9463-12; PM9463-13; PM9463-14; PM9463-15; PM9463-16; PM9463-17; PM9463-18; PM9463-2; PM9463-20; PM9463-21; PM9463-22; PM9463-23; PM9463-24; PM9463-25; PM9463-26; PM9463-27; PM9463-28; PM9463-29; PM9463-3; PM9463-30; PM9463-31; PM9463-32; PM9463-33; PM9463-34; PM9463-35; PM9463-36; PM9463-37; PM9463-38; PM9463-39; PM9463-4; PM9463-40; PM9463-41; PM9463-42; PM9463-43; PM9463-5; PM9463-6; PM9463-7; PM9463-8; PM9463-9; PM9465-1; PM9466-1; PM9466-2; PM9466-3; PM9467-1; PM9467-2; PM9468-1; PM9468-2; PM9469-1; PM9469-2; PM9470-1; PM9470-2; PM9471-1; PM9472-1; PM9473-1; PM9474-1; PM9475-1; PM9476-1; PM9477-1; PM9478-1; PM9479-1; PM9480-1; PM9481-1; PM9483-1; PM9484-1; PM9485-1; PM9486-1; PM9487-1; PM9488-1; PM9489-1; PM9490-1; PM9491-1; PM9493-1; PM9493-2; PM9494-1; PM9495-1; PM9496-1; PM9497-1; PM9498-1; PM9499-1; PM94a33-1; PM94a51-10; PM94a51-11; PM94a51-12; PM94a51-13; PM94a51-14; PM94a51-15; PM94a51-16; PM94a51-17; PM94a51-18; PM94a51-2; PM94a51-3; PM94a51-4; PM94a51-5; PM94a51-6; PM94a51-7; PM94a51-8; PM94a51-9; PM94a57-1; PM94K01; PM94K02; PM94K03; PM94K04; PM94K05; PM94K06; PM94K07-1; PM94K08-1; PM94K08-2; PM94K09-1; PM94K09-2; PM94K10-1; PM94K10-2; PM94K11-1; PM94K12; PM94K12-1; PM94K12-11; PM94K12-12; PM94K12-13; PM94K12-14; PM94K12-15; PM94K12-16; PM94K12-17; PM94K12-18; PM94K12-2; PM94K12-20; PM94K12-21; PM94K12-22; PM94K12-23; PM94K12-24; PM94K12-25; PM94K12-26; PM94K12-27; PM94K12-28; PM94K12-29; PM94K12-3; PM94K12-4; PM94K12-5; PM94K12-6; PM94K12-7; PM94K12-8; PM94K12-9; PM94K13; PM94K13-1; PM94K13-10; PM94K13-11; PM94K13-12; PM94K13-13; PM94K13-14; PM94K13-15; PM94K13-16; PM94K13-17; PM94K13-18; PM94K13-2; PM94K13-20; PM94K13-21; PM94K13-22; PM94K13-23; PM94K13-24; PM94K13-25; PM94K13-26; PM94K13-27; PM94K13-28; PM94K13-29; PM94K13-3; PM94K13-30; PM94K13-31; PM94K13-32; PM94K13-33; PM94K13-34; PM94K13-4; PM94K13-5; PM94K13-6; PM94K13-7; PM94K13-8; PM94K13-9; PM94K14-1; PM94K14-2; PM94K14-3; PM94K14-4; PM94K14-5; PM94K15-1; PM94K16-1; Polarstern; Professor Multanovskiy; PS51/078-1; PS51/080-7; PS51/082-1; PS51/083-2; PS51/084-2; PS51/086-1; PS51/087-2; PS51/089-1; PS51/090-1; PS51/091-1; PS51/092-7; PS51/095-3; PS51/096-3; PS51/097-1; PS51/098-3; PS51/099-3; PS51/100-3; PS51/101-1; PS51/102-3; PS51/103-1; PS51/104-7; PS51/110-3; PS51/112-3; PS51/114-2; PS51/116-1; PS51/120-1; PS51/122-1; PS51/125-2; PS51/129-1; PS51/130-1; PS51/131-2; PS51/132-2; PS51/133-2; PS51/134-3; PS51/138-7; PS51/144-5; PS51/145-2; PS51/146-5; PS51/147-2; PS51/148-5; PS51/149-5; PS51/150-5; PS51/151-2; PS51/152-4; PS51/153-2; PS51/154-4; PS51/157-2; PS51/158-2; PS51/159-5; PS51 Transdrift-V; TI99; TI9901-1; TI9902-1; TI9903-1; TI9904-1; TI9905-1; TI9906-1; TI9907-1; TI9908-1; TI9909-1; TI9910-1; TI9911-1; TI9912-1; TI9913-1; TI9914-1; TI9915-1; TI9916-1; TI9917-1; TI9918-1; TI9919-1; TI9920-1; TI9921-1; TI9922-1; TI9923-1; TI9924-1; Transdrift-I; Transdrift-II; Transdrift-III; Transdrift-IV; Transdrift-IX; Transdrift-VI; Transdrift-VII; Transdrift-VIII; Water sample; WS; Yakov Smirnitskiy; YS00_01; YS00_02; YS00_03; YS00_04; YS00_05; YS00_06; YS00_07; YS00_08; YS00_09; YS00_10; YS00_11; YS00_12; YS00_13; YS00_14; YS00_15; YS00_16; YS00_17; YS00_18; YS00_19; YS00_20; YS00_21; YS00_22; YS00_23; YS00_24; YS00_25; YS00_26; YS00_27; YS00_28; YS00_29; YS00_30; YS00_31; YS00_32; YS00_33; YS00_34; YS00_35; YS00_36; YS00_37; YS00_38; YS00_39;
    Type: Dataset
    Format: application/zip, 17 datasets
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    DATA PANGAEA
  • 7
    facet.materialart.
    Unknown
    Sediment entrainment into sea ice and transport in the Transpolar Drift: a case study from the Laptev Sea (Winter 2011/12) (2017)
    Elsevier
    In:  Continental Shelf Research, 141 . pp. 1-10.
    Details
    Publication Date: 2020-02-06
    Description: Highlights • Observations show that formation of sediment-laden sea ice occurs in coastal polynyas in winter. • Sea ice rafted sediments are a significant component of the Laptev Sea’s sediment budget. • No observational evidence for sediment entrainment into sea ice in mid-shelf polynyas at water depth greater than 20 m. Abstract Sea ice is an important vehicle for sediment transport in the Arctic Ocean. On the Laptev Sea shelf (Siberian Arctic) large volumes of sediment-laden sea ice are formed during freeze-up in autumn, then exported and transported across the Arctic Ocean into Fram Strait where it partly melts. The incorporated sediments are released, settle on the sea floor, and serve as a proxy for ice-transport in the Arctic Ocean on geological time scales. However, the formation process of sediment-laden ice in the source area has been scarcely observed. Sediment-laden ice was sampled during a helicopter-based expedition to the Laptev Sea in March/April 2012. Sedimentological, biogeochemical and biological studies on the ice core as well as in the water column give insights into the formation process and, in combination with oceanographic process studies, on matter fluxes beneath the sea ice. Based on satellite images and ice drift back-trajectories the sediments were likely incorporated into the sea ice during a mid-winter coastal polynya near one of the main outlets of the Lena River, which is supported by the presence of abundant freshwater diatoms typical for the Lena River phytoplankton, and subsequently transported about 80 km northwards onto the shelf. Assuming ice growth of 12 to 19 cm during this period and mean suspended matter content in the newly formed ice of 91.9 mg l-1 suggests that a minimum sediment load of 8.4x104 t might have been incorporated into sea ice. Extrapolating these sediment loads for the entire Lena Delta region suggests that at least 65% of the estimated sediment loads which are incorporated during freeze-up, and up to 10% of the annually exported sediment load may be incorporated during an event such as described in this paper.
    Type: Article , PeerReviewed
    Format: text
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OCEANREP)
  • 8
    facet.materialart.
    Unknown
    Episodic Bottom Warming, Mixing and Temperature Variability on the Laptev Sea Shelf (2016)
    In:  [Talk] In: AGU Ocean Sciences Meeting 2016, 21.-26.02.2016, New Orleans, Louisiana, USA .
    Details
    Publication Date: 2019-09-23
    Type: Conference or Workshop Item , NonPeerReviewed
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OCEANREP)
  • 9
    facet.materialart.
    Unknown
    Dissolved Nd isotope and REE distributions trace interannual variability of water mass mixing and water-sediment interaction in the Laptev Sea (2016)
    In:  [Poster] In: Goldschmidt Conference 2016, 26.06-01.07.2016, Yokohama, Japan .
    Details
    Publication Date: 2016-12-20
    Type: Conference or Workshop Item , NonPeerReviewed
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OCEANREP)
  • 10
    facet.materialart.
    Unknown
    Ocean circulation and freshwater pathways in the Arctic Mediterranean based on a combined Nd isotope, REE and oxygen isotope section across Fram Strait (2017)
    Elsevier
    In:  Geochimica et Cosmochimica Acta, 202 . pp. 285-309.
    Details
    Publication Date: 2020-02-06
    Description: The water masses passing the Fram Strait are mainly responsible for the exchange of heat and freshwater between the Nordic Seas and the Arctic Ocean (the Arctic Mediterranean, AM). Disentangling their exact sources, distribution and mixing, however, is complex. This work provides new insights based on a detailed geochemical tracer inventory including dissolved Nd isotope (εNd), rare earth element (REE) and stable oxygen isotope (δ18O) data along a full water depth section across Fram Strait. We find that Nd isotope and REE distributions in the open AM primarily reflect lateral advection of water masses and their mixing. Seawater-particle interactions exert important control only above the shelf regions, as observed above the NE Greenland Shelf. Advection of northward flowing warm Atlantic Water (AW) is clearly reflected by an εNd signature of -11.7 and a Nd concentration ([Nd]) of 16 pmol/kg in the upper ∼500 m of the eastern and central Fram Strait. Freshening and cooling of the AW on its way trough the AM are accompanied by a continuous change towards more radiogenic εNd signatures (e.g. -10.4 of dense Arctic Atlantic Water). This mainly reflects mixing with intermediate waters but also admixture of dense Kara Sea waters and Pacific-derived waters. The more radiogenic εNd signatures of the intermediate and deep waters (reaching -9.5) are mainly acquired in the SW Nordic Seas through exchange with basaltic formations of Iceland and SE Greenland. Inputs of Nd from Svalbard are not observed and surface waters and Nd on the Svalbard shelf originate from the Barents Sea. Shallow southward flowing Arctic-derived waters (〈 200 m) form the core of the East Greenland Current above the Greenland slope and can be traced by their relatively radiogenic εNd (reaching -8.8) and elevated [Nd] (21 to 29 pmol/kg). These properties are used together with δ18O and standard hydrographic tracers to define the proportions of Pacific-derived (〈 ∼30 % based on Nd isotopes) and Atlantic-derived waters, as well as of river waters (〈 ∼8 %). Shallow waters (〈 150 m) on the NE Greenland Shelf share some characteristics of Arctic-derived waters, but exhibit less radiogenic εNd values (reaching -12.4) and higher [Nd] (up to 38 pmol/kg) in the upper ∼100 m. This suggests local addition of Greenland freshwater of up to ∼6 %. In addition to these observations, this study shows that the pronounced gradients in εNd signatures and REE characteristics in the upper water column provide a reliable basis for assessments of shallow hydrological changes within the AM.
    Type: Article , PeerReviewed
    Format: text
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OCEANREP)
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...