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  • PANGAEA  (305)
  • Interperiodica, Springer  (3)
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  • 1
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    Changes in the Lena River runoff during the Holocene (2009)
    Interperiodica, Springer
    In:  Water Resources, 36 (3). pp. 273-283.
    Details
    Publication Date: 2016-04-26
    Description: The spatial and temporal changes in the Lena River runoff over the last 9 thousand years are reconstructed through studying the freshwater microfossils in sediment cores obtained from the Laptev Sea inner shelf immediately adjacent to the Lena delta and subject to the freshening effect of river water inflowing the sea through the main arms of the delta (the Trofimovskaya, Bykovskaya, and Tumatskaya arms), the sediments having been thoroughly AMS (14)C dated. The freshwater species of diatoms (predominantly the river ones) and green algae that enter the shelf with river water served as indicators of river runoff. The reconstruction of paleosalinity of the sea surface water in the regions under study is based on the relationships (established earlier) between the distribution of freshwater diatoms in the surface layers of sediments in the Arctic seas and the gradients of water salinity in summer. Data on variations in the composition of aquatic microfossil associations in sediments and the reconstructed paleosalinity in the regions of the eastern and western paleovalleys of the Lena River are used to determine the main paleohydrologic events that controlled the variations in the Lena runoff into the shelf zone of the Laptev Sea during the Holocene.
    Type: Article , PeerReviewed
    Format: text
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    PAPER (OCEANREP)
  • 2
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    Russian-German studies in the Arctic: Fifteen years of investigations in high latitudes (2011)
    Interperiodica, Springer
    In:  Herald of the Russian Academy of Sciences, 81 (3). pp. 297-304.
    Details
    Publication Date: 2019-09-23
    Description: Fifteen years ago, Russian and German earth scientists began their joint studies of the Laptev, Kara, and Barents seas and the Central Arctic. In the course of these studies, more than 50 marine expeditions and several expeditions to islands and the mainland were accomplished. The organization and results of these studies, as well as the plans for the future, are discussed in the article published below.
    Type: Article , PeerReviewed
    Format: text
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  • 3
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    Anomalous variations in the thermohaline structure of the Arctic Ocean (Aus dem Russ. übersetzt) (2009)
    Interperiodica, Springer
    In:  Doklady Earth Sciences, 429 (2). pp. 1567-1569.
    Details
    Publication Date: 2019-12-31
    Description: Introduction: In the last two decades, significant changes have occurred in the Arctic Ocean as well as in the entire Arctic region. The ice cover of Arctic seas, which was gradually (linearly) decreasing from the beginning of the 20th century to the end of it [1], began to shrink rapidly in the 1990s and in the 21st century [2]. Salinity variations in the upper layer changed sign in different regions [3]. The temperature of Atlantic waters in the Arctic basin started to increase. At the end of the 1990s, stabilization of Atlantic water transport to the Arctic Basin was observed [4], but starting from 2004, the temperature of Atlantic waters in the Eurasian sub-basin increased even more and reached values that had not been observed here previously [5]. In 2007, extreme summer processes in the Arctic that followed this increase and anomalous state of the ice cover and upper layer of the ocean that were formed by the beginning of autumn put forward a pressing problem to evaluate the variation in the thermohaline structure of the Arctic Ocean as a whole.
    Type: Article , PeerReviewed
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  • 4
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    Nutrient and oxygen concentrations, alkalinity and pH measured on water bottle samples collected during cruise Transdrift-XXII (VB14) in 2014, Laptev Sea (2021)
    PANGAEA
    Details
    Publication Date: 2023-03-14
    Description: We collected seawater samples during TRANSDRIFT XXII Expedition in September and October 2014 along with CTD (conductivity, temperature, depth) profiles with a SBE 32 rosette water sampler equipped with 12 Niskin bottles (2.5 L) under ice-free conditions onboard the Russian research vessel RV Viktor Buynitskiy on the entire Laptev Sea shelf and above the shelf slope. The dataset includes nitrate, nitrite, ammonia, total nitrogen, phosphate, silicate and oxygen concentration data, as well as pH and total alkalinity, which provide important information on the geochemical state of the Laptev Sea.
    Keywords: Alkalinity, total; Ammonium; CTD/Rosette; CTD-RO; DATE/TIME; Depth, bathymetric; DEPTH, water; Event label; Laptev Sea; LATITUDE; LONGITUDE; Nitrate; Nitrite; Nitrogen, total; nutrients; Oxygen, dissolved; Oxygen saturation; pH; Phosphate; Salinity; Silicate; Station label; System Laptev-Sea: Transdrift; Temperature, water; TRANSDRIFT; Transdrift-XXII; VB14; VB14_10-3; VB14_11-1a; VB14_12-1a; VB14_13-1a; VB14_14-1a; VB14_15-7-1a; VB14_16-1a; VB14_17-1a; VB14_18-1a; VB14_19-2a; VB14_20-1a; VB14_21-1a; VB14_2-1a; VB14_22-3a; VB14_23-1a; VB14_24-1; VB14_25-1a; VB14_26-1a; VB14_27-1a; VB14_28-3a; VB14_29-1a; VB14_30-1a; VB14_31-1; VB14_4-2a; VB14_5-1a; VB14_6-3a; VB14_7-1a; VB14_8-1a; VB14_9-2; Viktor Buynitskiy
    Type: Dataset
    Format: text/tab-separated-values, 3094 data points
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    DATA PANGAEA
  • 5
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    Temperature and salinity measurements on the Laptev Sea shelf in 2013-2014 at mooring site "1893-T1" (2020)
    PANGAEA
    In:  Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Bremerhaven
    Details
    Publication Date: 2023-03-16
    Description: A total of four moorings ("1893", "Taymyr", "Kotelny", "Vilkitsky") was deployed in September 2013 during the Transdrift 21 - expedition and recovered in September 2014 during Transdrift 22 aboard the Viktor Buinitsky. The expeditions were carried out in the framework of the German-Russian "Laptev Sea Systems" partnership, and within the BMBF-funded "Transdrift"-project. The moorings were equipped with RDI-Workhorse ADCPs for current measurements and Seabird SBE37 for temperature and salinity measurements. Sampling intervals were 1 hour for ADCP, and 30 minutes for SBE37. Currents were corrected for misalignment based on angles extracted from: https://geomag.nrcan.gc.ca/calc/mdcal-en.php Not all SBE37 models included a pressure sensor. If pressure was recorded, the data files provide pressure and the converted water depth. For models without a pressure sensor, the data file lists only a constant value indicating the targeted instrument depth. Temperature and salinity data were despiked, and outliers exceeding three times the standard deviation were removed and interpolated.
    Keywords: 1893-T1-13; Arctic Ocean; AWI_PhyOce; CTD, SEA-BIRD SBE 37; DATE/TIME; Density, sigma-theta (0); DEPTH, water; Gear identification number; Laptev Sea; Laptev Sea System; LSS; Mooring (long time); MOORY; oceanographic moorings; Physical Oceanography @ AWI; Pressure, water; Salinity; System Laptev-Sea: Transdrift; Temperature, water; TRANSDRIFT; Transdrift-XXI; VB13; VB13_16-5a; Viktor Buynitskiy
    Type: Dataset
    Format: text/tab-separated-values, 441575 data points
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    DATA PANGAEA
  • 6
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    Daily mean sea ice draft from moored Upward-Looking Sonar ULS_Taymyr_1415 in the Laptev Sea (2019)
    PANGAEA
    Details
    Publication Date: 2023-03-16
    Keywords: AWI_SeaIce; DATE/TIME; Laptev Sea; Laptev Sea System; Latitude of event; Longitude of event; LSS; sea ice draft; Sea ice draft; Sea Ice Physics @ AWI; Taymyr-T1-14-ULS; Transdrift-XXII; ULS; ULS_Taymyr_1415; Upward looking sonar; Upward looking sonar (ULS); VB14; Viktor Buynitskiy
    Type: Dataset
    Format: text/tab-separated-values, 239 data points
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    DATA PANGAEA
  • 7
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    Temperature and salinity measurements on the Laptev Sea shelf in 2013-2014 at mooring site "Vilkitsky" (2020)
    PANGAEA
    Details
    Publication Date: 2023-03-16
    Description: A total of four moorings ("1893", "Taymyr", "Kotelny", "Vilkitsky") was deployed in September 2013 during the Transdrift 21 - expedition and recovered in September 2014 during Transdrift 22 aboard the Viktor Buinitsky. The expeditions were carried out in the framework of the German-Russian "Laptev Sea Systems" partnership, and within the BMBF-funded "Transdrift"-project. The moorings were equipped with RDI-Workhorse ADCPs for current measurements and Seabird SBE37 for temperature and salinity measurements. Sampling intervals were 1 hour for ADCP, and 30 minutes for SBE37. Currents were corrected for misalignment based on angles extracted from: https://geomag.nrcan.gc.ca/calc/mdcal-en.php Not all SBE37 models included a pressure sensor. If pressure was recorded, the data files provide pressure and the converted water depth. For models without a pressure sensor, the data file lists only a constant value indicating the targeted instrument depth. Temperature and salinity data were despiked, and outliers exceeding three times the standard deviation were removed and interpolated.
    Keywords: Arctic Ocean; AWI_PhyOce; DATE/TIME; Density, sigma-theta (0); DEPTH, water; Gear identification number; Laptev Sea; Laptev Sea System; LSS; Mooring (long time); MOORY; oceanographic moorings; Physical Oceanography @ AWI; Pressure, water; Salinity; see comment for gear; System Laptev-Sea: Transdrift; Temperature, water; TRANSDRIFT; Transdrift-XXI; VB13; VB13_5-1; Viktor Buynitskiy; Vilkitzky-13
    Type: Dataset
    Format: text/tab-separated-values, 692198 data points
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    DATA PANGAEA
  • 8
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    Temperature and salinity measurements on the Laptev Sea shelf in 2013-2014 at mooring site "Taymyr-T1" (2020)
    PANGAEA
    In:  Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Bremerhaven
    Details
    Publication Date: 2023-03-16
    Description: A total of four moorings ("1893", "Taymyr", "Kotelny", "Vilkitsky") was deployed in September 2013 during the Transdrift 21 - expedition and recovered in September 2014 during Transdrift 22 aboard the Viktor Buinitsky. The expeditions were carried out in the framework of the German-Russian "Laptev Sea Systems" partnership, and within the BMBF-funded "Transdrift"-project. The moorings were equipped with RDI-Workhorse ADCPs for current measurements and Seabird SBE37 for temperature and salinity measurements. Sampling intervals were 1 hour for ADCP, and 30 minutes for SBE37. Currents were corrected for misalignment based on angles extracted from: https://geomag.nrcan.gc.ca/calc/mdcal-en.php Not all SBE37 models included a pressure sensor. If pressure was recorded, the data files provide pressure and the converted water depth. For models without a pressure sensor, the data file lists only a constant value indicating the targeted instrument depth. Temperature and salinity data were despiked, and outliers exceeding three times the standard deviation were removed and interpolated.
    Keywords: Arctic Ocean; AWI_PhyOce; CTD, SEA-BIRD SBE 37; DATE/TIME; Density, sigma-theta (0); DEPTH, water; Gear identification number; Laptev Sea; Laptev Sea System; LSS; Mooring (long time); MOORY; oceanographic moorings; Physical Oceanography @ AWI; Pressure, water; Salinity; System Laptev-Sea: Transdrift; Taymyr-T1-13; Temperature, water; TRANSDRIFT; Transdrift-XXI; VB13; VB13_7-9a; Viktor Buynitskiy
    Type: Dataset
    Format: text/tab-separated-values, 390632 data points
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  • 9
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    Temperature and salinity measurements on the Laptev Sea shelf in 2013-2014 at mooring site "Kotelny" (2020)
    PANGAEA
    In:  Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Bremerhaven
    Details
    Publication Date: 2023-03-16
    Description: A total of four moorings ("1893", "Taymyr", "Kotelny", "Vilkitsky") was deployed in September 2013 during the Transdrift 21 - expedition and recovered in September 2014 during Transdrift 22 aboard the Viktor Buinitsky. The expeditions were carried out in the framework of the German-Russian "Laptev Sea Systems" partnership, and within the BMBF-funded "Transdrift"-project. The moorings were equipped with RDI-Workhorse ADCPs for current measurements and Seabird SBE37 for temperature and salinity measurements. Sampling intervals were 1 hour for ADCP, and 30 minutes for SBE37. Currents were corrected for misalignment based on angles extracted from: https://geomag.nrcan.gc.ca/calc/mdcal-en.php Not all SBE37 models included a pressure sensor. If pressure was recorded, the data files provide pressure and the converted water depth. For models without a pressure sensor, the data file lists only a constant value indicating the targeted instrument depth. Temperature and salinity data were despiked, and outliers exceeding three times the standard deviation were removed and interpolated.
    Keywords: Arctic Ocean; AWI_PhyOce; CTD, SEA-BIRD SBE 37; DATE/TIME; Density, sigma-theta (0); DEPTH, water; Gear identification number; Kotelnyy-13; Laptev Sea; Laptev Sea System; LSS; Mooring (long time); MOORY; oceanographic moorings; Physical Oceanography @ AWI; Pressure, water; Salinity; System Laptev-Sea: Transdrift; Temperature, water; TRANSDRIFT; Transdrift-XXI; VB13; VB13_15-9a; Viktor Buynitskiy
    Type: Dataset
    Format: text/tab-separated-values, 268365 data points
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    DATA PANGAEA
  • 10
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    Raw bottom track error velocity and range data from moored upward-looking Acoustic Doppler Current Profilers in the Laptev Sea between 2013 and 2015 (2019)
    PANGAEA
    Details
    Publication Date: 2023-03-16
    Description: Within the framework of the Russian-German BMBF-funded TRANSDRIFT project moored upward-looking Acoustic Doppler Current Profilers (ADCPs) were deployed in the Laptev Sea between 2013 and 2015. Two upward-looking Workhorse 300 kHz Sentinel ADCPs (manufactured by Teledyne RDI) were deployed at the 1893 and Taymyr stations in September 2013. During a Russian expedition in September 2014 both moorings were recovered and partly redeployed at the two stations until September 2015 (one upward-looking ADCP was substituted in 2014). The four data sets (ADCP_BT_1893_1314.txt, ADCP_BT_Taymyr_1314.txt, ADCP_BT_1893_1415.txt and ADCP_BT_Taymyr_1415.txt) are named to indicate the location of the deployment (station name) and the sampling period. Each file contains hourly values of error velocity (in mm/s) and range (beams 1 to 4, in m) data that was recorded using the ADCPs bottom track (BT) mode. Additionally, the instruments roll and pitch values (in deg) are included. The deployment sheets are attached as well. All moorings were equipped with numerous other instruments. Their data has been published separately.
    Keywords: 1893-T1-13-ADCP; 1893-T1-14-ADCP; Acoustic Doppler Current Profiler; ADCP; ADCP_BT_1893_1314; ADCP_BT_1893_1415; ADCP_BT_Taymyr_1314; ADCP_BT_Taymyr_1415; AWI_SeaIce; bottom track; Date/Time of event; Date/Time of event 2; Event label; File content; File format; File name; File size; Laptev Sea; Laptev Sea System; Latitude of event; Longitude of event; LSS; Sea Ice Physics @ AWI; Taymyr-T1-13-ADCP; Taymyr-T1-14-ADCP; Transdrift-XXI; Transdrift-XXII; Uniform resource locator/link to file; Uniform resource locator/link to metadata file; VB13; VB14; Viktor Buynitskiy
    Type: Dataset
    Format: text/tab-separated-values, 24 data points
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    DATA PANGAEA
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