GLORIA

GEOMAR Library Ocean Research Information Access

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
Document type
Keywords
Publisher
Language
Years
  • 1
    Online Resource
    Online Resource
    Barents Sea upstream events impact the properties of Atlantic water inflow into the Arctic Ocean : evidence from 2005 to 2006 downstream observations (2009)
    Associated volumes
    Details Availability
    In: Deep-sea research / 1, Amsterdam [u.a.] : Elsevier Science, 1993, 56(2009), 4, Seite 513-527, 1879-0119
    In: volume:56
    In: year:2009
    In: number:4
    In: pages:513-527
    Description / Table of Contents: Inflow of Atlantic water (AW) from Fram Strait and the Barents Sea into the Arctic Ocean conditions the intermediate (100-1000 m) waters of the Arctic Ocean Eurasian margins. While over the Siberian margin the Fram Strait AW branch (FSBW) has exhibited continuous dramatic warming beginning in 2004, the tendency of the Barents Sea AW branch (BSBW) has remained poorly known. Here we document the contrary cooling tendency of the BSBW through the analysis of observational data collected from the icebreaker Kapitan Dranitsyn over the continental slope of the Eurasian Basin in 2005 and 2006. The CTD data from the R.V. Polarstern cruise in 1995 were used as a reference point for evaluating external atmospheric and sea-ice forcing and oxygen isotope analysis. Our data show that in 2006 the BSBW core was saltier (by ~0.037), cooler (~0.41 ʿC), denser (by ~0.04 kg/m3), deeper (by 150-200 m), and relatively better ventilated (by 78 mymol/kg of dissolved oxygen, or by 1.11.7% of saturation) compared with 2005. We hypothesize that the shift of the meridional wind from off-shore to on-shore direction during the BSBW translation through the Barents and northern Kara seas results in longer surface residence time for the BSBW sampled in 2006 compared with samples from 2005. The cooler, more saline, and better-ventilated BSBW sampled in 2006 may result from longer upstream translation through the Barents and northern Kara seas where the BSBW was modified by sea-ice formation and interaction with atmosphere. The data for stable oxygen isotopes from 1995 and 2006 reveals amplified brine modification of the BSBW core sampled downstream in 2006, which supports the assumption of an increased upstream residence time as indicated by wind patterns and dissolved oxygen values.
    Type of Medium: Online Resource
    Pages: graph. Darst
    ISSN: 1879-0119
    DOI: 10.1016/j.dsr.2008.11.005
    Language: English
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    GEOMAR CATALOGUE
    Link to Library Catalog
    get availability status
  • 2
    Online Resource
    Online Resource
    Effects of atmospheric vorticity on the seasonal hydrographic cycle over the eastern Siberian shelf (2008)
    Associated volumes
    Details Availability
    In: Geophysical research letters, Hoboken, NJ : Wiley, 1974, 35(2008), 1944-8007
    In: volume:35
    In: year:2008
    In: extent:5
    Description / Table of Contents: The seasonal hydrographic cycle explains about 25-75% of the entire salinity variability spectrum of the Siberian shelf hydrography. Quasi-decadal variations in the seasonal salinity difference over the Laptev and East Siberian sea shelves derived from continuous summer-to-winter historical records from the 1960s-1990s are attributed to atmospheric vorticity quasi-decadal variations. Summer cyclonic vorticity results in riverine water accumulation on the shelf, increasing the salinity summer-to-winter difference. Summer anticyclonic wind pattern enhances fresh water movement from the shelf towards the Arctic Ocean that tends to weaken the seasonal salinity amplitude.
    Type of Medium: Online Resource
    Pages: 5 , graph. Darst
    ISSN: 1944-8007
    DOI: 10.1029/2007GL032739
    Language: English
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    GEOMAR CATALOGUE
    Link to Library Catalog
    get availability status
  • 3
    Online Resource
    Online Resource
    Toward a warmer Arctic Ocean : spreading of the early 21st century Atlantic water warm anomaly along the Eurasian Basin margins (2008)
    Associated volumes
    Details Availability
    In: Journal of geophysical research. C, Oceans, Hoboken, NJ : Wiley, 1978, 113(2008), 2169-9291
    In: volume:113
    In: year:2008
    In: extent:13
    Description / Table of Contents: We document through the analysis of 2002-2005 observational data the recent Atlantic Water (AW) warming along the Siberian continental margin due to several AW warm impulses that penetrated into the Arctic Ocean through Fram Strait in 1999-2000. The AW temperature record from our long-term monitoring site in the northern Laptev Sea shows several events of rapid AW temperature increase totaling 0.8ʿC in FebruaryAugust 2004. We hypothesize the along-margin spreading of this warmer anomaly has disrupted the downstream thermal equilibrium of the late 1990s to earlier 2000s. The anomaly mean velocity of 2.4-2.5 ± 0.2 cm/s was obtained on the basis of travel time required between the northern Laptev Sea and two anomaly fronts delineated over the Eurasian flank of the Lomonosov Ridge by comparing the 2005 snapshot along-margin data with the AW pre-1990 mean. The magnitude of delineated anomalies exceeds the level of pre-1990 mean along-margin cooling and rises above the level of noise attributed to shifting of the AW jet across the basin margins. The anomaly mean velocity estimation is confirmed by comparing mooring-derived AW temperature time series from 2002 to 2005 with the downstream along-margin AW temperature distribution from 2005. Our mooring current meter data corroborate these estimations.
    Type of Medium: Online Resource
    Pages: 13 , graph. Darst
    ISSN: 2169-9291
    DOI: 10.1029/2007JC004158
    Language: English
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    GEOMAR CATALOGUE
    Link to Library Catalog
    get availability status
  • 4
    Online Resource
    Online Resource
    Seasonal modification of the Arctic Ocean intermediate water layer off the eastern Laptev Sea continental shelf break (2009)
    Associated volumes
    Details Availability
    In: Journal of geophysical research. C, Oceans, Hoboken, NJ : Wiley, 1978, 114(2009), 6, 2169-9291
    In: volume:114
    In: year:2009
    In: number:6
    In: extent:19
    Description / Table of Contents: Through the analysis of observational mooring data collected at the northeastern Laptev Sea continental slope in 2004-2007, we document a hydrographic seasonal signal in the intermediate Atlantic Water (AW) layer, with generally higher temperature and salinity from December-January to May-July and lower values from May-July to December-January. At the mooring position, this seasonal signal dominates, contributing up to 75% of the total variance. Our data suggest that the entire AW layer down to at least 840 m is affected by seasonal cycling, although the strength of the seasonal signal in temperature and salinity reduces from 260 m (±0.25ʿC and ±0.025 psu) to 840 m (±0.05ʿC and ±0.005 psu). The seasonal velocity signal is substantially weaker, strongly masked by high-frequency variability, and lags the thermohaline cycle by 45-75 days. We hypothesize that our mooring record shows a time history of the along-margin propagation of the AW seasonal signal carried downstream by the AW boundary current. Our analysis suggests that the seasonal signal in the Fram Strait Branch of AW (FSBW) at 260 m is predominantly translated from Fram Strait, while the seasonality in the Barents Sea branch of AW (BSBW) domain (at 840 m) is attributed instead to the seasonal signal input from the Barents Sea. However, the characteristic signature of the BSBW seasonal dynamics observed through the entire AW layer leads us to speculate that BSBW also plays a role in seasonally modifying the properties of the FSBW.
    Type of Medium: Online Resource
    Pages: 19 , graph. Darst
    ISSN: 2169-9291
    URL: http://onlinelibrary.wiley.com/enhanced/doi/10.1029/2008JC005229/
    DOI: 10.1029/2008JC005229
    Language: English
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    GEOMAR CATALOGUE
    Link to Library Catalog
    get availability status
  • 5
    Online Resource
    Online Resource
    The long-term and interannual variability of summer fresh water storage over the eastern Siberian shelf : implication for climatic change (2008)
    Associated volumes
    Details Availability
    In: Journal of geophysical research. C, Oceans, Hoboken, NJ : Wiley, 1978, 113(2008), 2169-9291
    In: volume:113
    In: year:2008
    In: extent:14
    Description / Table of Contents: A time series of summer fresh water content anomalies (FWCA) over the Laptev and East Siberian sea shelves was constructed from historical hydrographic records for the period from 1920 to 2005. Results from a multiple regression between FCWA and various atmospheric and oceanic indices show that the fresh water content on the shelves is mainly controlled by atmospheric vorticity on quasi-decadal timescales. When the vorticity of the atmosphere on the shelves is antycyclonic, approximately 500 km3 of fresh water migrates from the eastern Siberian shelf to the Arctic Ocean through the northeastern Laptev Sea. When the vorticity of the atmosphere is cyclonic, this fresh water remains on the southern Laptev and East Siberian sea shelves. This FWCA represents approximately 35% of the total fresh water inflow provided by river discharge and local sea-ice melt, and is about ten times larger than the standard deviation of the Lena River summer long-term mean discharge. However, the large interannual and spatial variability in the fresh water content of the shelves, as well as the spatial coverage of the hydrographic data, makes it difficult to detect the long-term tendency of fresh water storage associated with climate change
    Type of Medium: Online Resource
    Pages: 14 , graph. Darst
    ISSN: 2169-9291
    DOI: 10.1029/2007JC004304
    Language: English
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    GEOMAR CATALOGUE
    Link to Library Catalog
    get availability status
  • 6
    Online Resource
    Online Resource
    Water mass dynamics and biogeochemistry of the cold-water coral reef, Stjernsund, northern Norway (2013)
    Saint Petersburg, Hamburg
    Details Availability
    Keywords: Hochschulschrift
    Type of Medium: Online Resource
    Pages: 1 Online-Ressource (86 Blatt = 4 MB)
    URL: https://oceanrep.geomar.de/27767/
    Language: Undetermined
    Note: Zusammenfassung in englischer und russischer Sprache
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    GEOMAR CATALOGUE
    Link to Library Catalog
    get availability status
  • 7
    Online Resource
    Online Resource
    The recent thermohaline changes in frontal areas of the Laptev Sea : result of two sequential summer oceanographic surveys in 2007-2008 (2009)
    Bremen
    Details Availability
    Keywords: Hochschulschrift
    Type of Medium: Online Resource
    Pages: 1 Online-Ressource (42 Blatt = 9 MB) , Illustrationen
    URL: https://oceanrep.geomar.de/28434/
    Language: English
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    GEOMAR CATALOGUE
    Link to Library Catalog
    get availability status
  • 8
    Online Resource
    Online Resource
    Noise-induced dynamical regimes in a system of globally coupled excitable units (2021)
    Berlin : Weierstraß-Institut für Angewandte Analysis und Stochastik (WIAS) Leibniz-Institut im Forschungsverbund Berlin e.V.
    Details Availability
    Keywords: Forschungsbericht
    Description / Table of Contents: We study the interplay of global attractive coupling and individual noise in a system of identical active rotators in the excitable regime. Performing a numerical bifurcation analysis of the nonlocal nonlinear Fokker-Planck equation for the thermodynamic limit, we identify a complex bifurcation scenario with regions of different dynamical regimes, including collective oscillations and coexistence of states with different levels of activity. In systems of finite size this leads to additional dynamical features, such as collective excitability of different types, noise-induced switching and bursting. Moreover, we show how characteristic quantities such as macroscopic and microscopic variability of inter spike intervals can depend in a non-monotonous way on the noise level.
    Type of Medium: Online Resource
    Pages: 1 Online-Ressource (13 Seiten, 2,76 MB) , Diagramme
    Series Statement: Preprint / Weierstraß-Institut für Angewandte Analysis und Stochastik no. 2853
    URL: https://doi.org/10.20347/WIAS.PREPRINT.2853
    DOI: 10.20347/WIAS.PREPRINT.2853
    Language: English
    Note: Literaturverzeichnis: Seite 11
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    GEOMAR CATALOGUE
    Link to Library Catalog
    get availability status
  • 9
    facet.materialart.
    Unknown
    Mooring-based (YS05) data collected in the period May-June 2014 in Young Sound, Greenland (2024)
    PANGAEA
    Details
    Publication Date: 2024-02-23
    Description: Time series of currents, salinity (conductivity), temperature Chlorophyl-a and CDOM were obtained in the period May- June 2014 by use of a McLane ice-tethered profiler in Young Sound, Greenland. At YS05 (74.238 N, 20.188 W) the mooring consisted of a 600 kHz downward-looking Nortek Aquadopp ADCP and an SBE 52-MP CTD (accuracy temperature ±0.002 C and conductivity ±0.0003 Sm-1) and WetLab ECO triplet (Cholorphyll-a and CDOM). Velocities were corrected for magnetic deviation (18.5o). The water column sampling spanned between 1.5 and 30 m depth every 30 min. The ADCP was set to sample 80 bins (bin size of 0.5 m) and each bin consisted of a 1 min ensemble average of 60 pings. The first and last bins were centred at 1m and 41 m depth. Only bins between 2.5 and 30 m were adequately measured. For further details see Boone et al., 2017 (Circulation and fjord-shelf exchange during the ice-covered period in Young Sound-Tyrolerfjord, Northwest Greenland (74 N). Estuar. Coast. Shelf Sci., 15, 194-205. https://doi.org/10.1016/j.ecss.2017.06.021).
    Keywords: Current velocity, east-west; Current velocity, north-south; DATE/TIME; DEPTH, water; Event label; Fluorescence, chlorophyll; Fluorescence, colored dissolved organic matter; Fluorometer, WET Labs ECO 3-Triplet; Hydrographic time series; ice-covered conditions; LATITUDE; LONGITUDE; MOOR; Moored Profiler CTD, Sea-Bird, SBE 52-MP; Mooring; Nortek Acoustic Wave and Current Profiler (AWAC); Pressure, water; Salinity; Temperature, water; Young Sound, Greenland; Young Sound-Greenland; YS05
    Type: Dataset
    Format: text/tab-separated-values, 284915 data points
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    DATA PANGAEA
  • 10
    facet.materialart.
    Unknown
    CTD data collected in the period April-June 2014 in Young Sound, Greenland (2024)
    PANGAEA
    Details
    Publication Date: 2024-02-23
    Description: CTD data was obtained in the period April-June 2014 in Young Sound, Greenland. CTD casts were performed using an SBE-19 plus CTD (accuracy: ±0.005 C and ±0.0005 Sm-1) which was lowered through ice-drilled holes. In total, 4 transects were performed and covered from the mouth to the head of the fjord. Standardized routines of Seabird software were used on the data set for quality control and bin averaging. The data sets consist of profiles of practical salinity, temperature, potential temperature, dissolved oxygen, fluorescence, turbidity, and irradiance (PAR). For further details see Boone et al., 2017 (Circulation and fjord-shelf exchange during the ice-covered period in Young Sound-Tyrolerfjord, Northwest Greenland (74o N). Estuar. Coast. Shelf Sci., 15, 194-205. https://doi.org/10.1016/j.ecss.2017.06.021).
    Keywords: CTD, Sea-Bird, SBE 19plus; CTD data; DATE/TIME; DEPTH, water; Event label; Fluorescence; ice-covered conditions; LATITUDE; LONGITUDE; Oxygen, dissolved; Pressure, water; Radiation, photosynthetically active; Salinity; Sample elevation; Temperature, water; Temperature, water, potential; Turbidity (Formazin Turbidity Unit); Young Sound, Greenland; Young Sound-Greenland; YS-001; YS-002; YS-003; YS-004; YS-005; YS-006; YS-007; YS-008; YS-009; YS-010; YS-011; YS-012; YS-013; YS-014; YS-015; YS-016; YS-017; YS-018; YS-019; YS-020; YS-021; YS-022; YS-023; YS-024; YS-025; YS-026; YS-027; YS-028; YS-029; YS-030; YS-031; YS-032; YS-033; YS-034; YS-035; YS-036; YS-037; YS-038; YS-039; YS-040; YS-041; YS-042; YS-043; YS-044; YS-045; YS-046; YS-047; YS-048; YS-049; YS-050; YS-051; YS-052; YS-053; YS-054; YS-055; YS-056; YS-057; YS-058; YS-059; YS-060; YS-061; YS-062; YS-063; YS-064; YS-065; YS-066; YS-067; YS-068; YS-069; YS-070; YS-071; YS-072; YS-073; YS-074; YS-075; YS-076; YS-077; YS-078; YS-079; YS-080; YS-081; YS-082; YS-083; YS-084; YS-085; YS-086; YS-087; YS-088; YS-089; YS-090; YS-091; YS-092; YS-093; YS-094; YS-095; YS-096; YS-097; YS-098; YS-099; YS-100; YS-101; YS-102; YS-103; YS-104; YS-105; YS-106; YS-107; YS-108; YS-109; YS-110; YS-111; YS-112; YS-113; YS-114; YS-115; YS-116; YS-117; YS-118; YS-119; YS-120; YS-121; YS-122; YS-123; YS-124; YS-125; YS-126; YS-127; YS-128; YS-129; YS-130; YS-131; YS-132
    Type: Dataset
    Format: text/tab-separated-values, 191889 data points
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    DATA PANGAEA
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...