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293 results for “Svalbard”
Modelled gas hydrate stability zone extents for Svalbard's fjord and near-shore settings
<p>Supplementary data to the published paper 'Modelling of the gas hydrate potential in Svalbard's fjords' (https://doi.org/10.1016/j.jngse.2021.104127). This archive includes geopackage files for each of the targeted fjords and contains (amongst others) bathymetric depth (Z, metres), top and base of the modelled GHSZ (GHSZ_T/GHSZ_B, metres depth), cumulative GHSZ cell count (#, 25 metres per), and the number of CTD data points within the radius (CTD_count and CTD2deep). Included onshore modelling data is to be ignored and considered a modelling artefact.</p>
Figure 5. Top 10 in Microhabitat diversity of Svalbard Bryozoa
Figure 5. Top 10 most abundant
Figure 2 in Microhabitat diversity of Svalbard Bryozoa
Figure 2. Depth range of substrata collected, A, algae; B, bryozoa.
Figure 3 in Microhabitat diversity of Svalbard Bryozoa
Figure 3. Accumulation curve for assemblages on major microhabitats.
Surge-induced Crevasse dynamics of Monacobreen Glacier, Svalbard, through SAR observations and subglacial flow estimations
<p>This repository contains the datasets of glacial surface velocity, subsurface velocities, and the basal shear stress published in the paper 'Surge-induced Crevasse dynamics of Monacobreen Glacier, Svalbard, through SAR observations and subglacial flow estimations' in AGU Earth and Space Sciences. The detailed methodological description along with the computational methods have been discussed in detail in the article.</p>
Catalog of icequakes recorded in March 2019, in the Van Mijen Fjord, in Svalbard (Norway)
<p>The files contain a catalog of icequakes waveforms recorded in March 2019, at Vallunden lake, in the Van Mijen Fjord, in Svalbard (Norway). The three components of velocity are available. </p>
Active gas seepage in western Spitsbergen fjords, Svalbard archipelago: spatial extent and geological controls
<p>The following digital data package is provided as part of the submission of the publication Rodes et al. (2023) <em>Active gas seepage in western Spitsbergen fjords, Svalbard archipelago: spatial extent and geological controls</em>, considered for publication in the journal Frontiers in Earth Science. The dataset contains the distribution and characteristics of the gas flares observed during the HE-449 cruise in 2015 and the GASGEM cruise in 2021. Moreover, it contains the interpreted outcropping areas of the geological units in Isfjorden and Van Mijenfjorden. Each dataset is provided in GeoJSON, Geopackage and Shapefile file extensions. Finally, we provide a minimal working example to calculate the flare density per multibeam area of outcropping geological units.</p>
Passive Open-Path Fouriertransform Infrared spectroscopy (OP-FTIR) measurements in the Arctic environment of Ny Ålesund / Svalbard 2023
<p>In the Polar MOSES campaign 2023, a ground-based remote sensing method – OP-FTIR spectroscopy- which is proven to be a flexible long-path technique for the characterization of larger areas was used. This method is able to simultaneously detect various volatile atmospheric compounds relevant for environmental assessment with a single rapid measurement. Many greenhouse gas molecules (e.g., CO<sub>2</sub>, H<sub>2</sub>O, CH<sub>4</sub>) have unique signatures (absorption or emission bands) in the measured spectral IR range. IR spectroscopy allows spatial and non-invasive characterization of emissions and is a useful method to capture emissions along the coastline, both seaward and landward.</p> <p>The passive technique was applied in a mobile mode to obtain IR spectra at different relevant locations. In order to investigate the near surface atmospheric composition, the mobile passive OP-FTIR spectroscopic scanning measurements was executed with Bruker RAPID devices to cover marine and terrestrial areas. The RAPID passive detection systems was deployed for 360° remote sensing of threats at distances up to 5000 m. Initially, the survey's primary objective was to qualitatively interpret spectra, enabling the identification of emission sources and the characterization of the heterogeneous emission pattern. This was achieved through the measurements in different directions to allow the direct comparisons of the various compartments under investigation and their potential interactions.</p>
Data set of solar irradiation from Svalsat, Svalbard
<p>The data collected with a set of SP110 Apogee pyranometers.</p>
Data from: Spatiotemporal dynamics of Nektonic biodiversity and vegetation shifts during the Smithian–Spathian Transition: Conodont and Palynomorph insights from Svalbard
Open the record for dataset details and reuse information.
Determinants of heart rate in Svalbard reindeer reveal mechanisms of seasonal energy management
Open the record for dataset details and reuse information.
State-space model for Svalbard ptarmigan
Open the record for dataset details and reuse information.
Fractional Snow Covered Area at Ny-Ålesund (Svalbard, Norway) 2015-2019
<p>The produced dataset (in netCDF v4 format) contains the estimation of the Factional Snow Cover (FSC) in different sites located in Svalbard islands. We considered areas that complete the already available datasets and we focused the attention to the Ny-Ålesund area (Svalbard - Norway) (78.917° N, 11.933° E) where different facilities are available for supporting the use of terrestrial photography. One asset is the Zeppelin observatory, located on a panoramic spot where cameras are operating since 2000, and one is the Climate Change Tower (CCT) where we deployed a camera in 2018 (Figure 1). While the Zeppelin camera, operated by the Norwegian Polar Institute, offers a long time-series coupled with a pan-tilt-zoom device (4 different views daily), the CCT device was installed in order to cover the hidden side of the coastal plain not visible from the observatory. Furthermore, the CCT camera provided highly spatial and time resolved (hourly) images that were also below the cloud layer.</p>
Data from: A century of conservation: the ongoing recovery of Svalbard reindeer
Several caribou and reindeer (Rangifer tarandus) populations have experienced recent population declines, often attributed to anthropogenic stressors such as harvesting, landscape fragmentation, and climate change. Svalbard reindeer (R. t. platyrhynchus), the wild reindeer subspecies endemic to the high-Arctic Svalbard archipelago, was protected in 1925, after most subpopulations had been eradicated by harvest. Although direct pressure from harvest has ceased, indirect anthropogenic stressors from environmental changes have increased in this climate change hot spot. An assessment of the current distribution and abundance is therefore urgently needed. We combined distance sampling (300 km transects, n = 489 reindeer groups) and total counts (1,350 km2, n = 1,349 groups) to estimate the Svalbard reindeer distribution and abundance across its entire range, which we compared with historical data from the literature and radiocarbon-dated bones. Reindeer have now recolonized nearly all non-glaciated land (i.e., areas occupied prior to human presence), and their spatial variation in abundance reflects vegetation productivity. Independent of vegetation productivity, however, recently recolonized areas have lower reindeer densities than areas not subject to past extirpation. This suggests that recovery from past overharvesting is still in progress. These incompletely recovered areas are potential targets for increased monitoring frequency and maintaining strict conservation to follow the Svalbard management goal (i.e., virtually untouched wilderness areas). Because of such ongoing recolonization, possibly combined with vegetation greening effects of recent warming, our status estimate of Svalbard reindeer abundance (22,435 [95% CI = 21,452–23,425]) is more than twice a previous estimate based on opportunistic counts. Thus, although our study demonstrates the successful outcome of strict harvesting control implemented a century ago, current and future population trajectories are likely shaped by climate change.
FIGURES 81–86 in The empidoid flies (Diptera: Empidoidea, exclusive of Dolichopodidae) of the Russian Arctic islands and Svalbard Archipelago
FIGURES 81–86. Landscapes in different regions of Wrangel Island. 81. middle course of Neozhidannaya River, zonal spotted tundra; 82. middle course of Neozhidannaya River, river valley; 83. coastal Southern plain; 84. environs of Somnitelnaya Bay, Mineev Mtns; 85. central part of Wrangel Island, middle flow of Mamontovaya River, oseir-bed in the river valley; 86. central part of Wrangel Island, spurs of Pervaya Mtn, herb-dryad dry spotted tundra.
FIGURES 49–53 in The empidoid flies (Diptera: Empidoidea, exclusive of Dolichopodidae) of the Russian Arctic islands and Svalbard Archipelago
FIGURES 49–53. Rhamphomyia (Pararhamphomyia) wrangeli sp. nov., male. 49. habitus, holotype, lateral view; 50. abdomen, right lateral view; 51. postabdomen, macerated, right lateral view; 52. same, macerated, dorsal view; 53. same, outline (setation omitted), dorsal view. Abbreviations: cerc—cercus; epand—epandrium; ph—phallus; sg 8—segment 8; st 7—sternite 7; tg 7—tergite 7.
FIGURES 43, 44 in The empidoid flies (Diptera: Empidoidea, exclusive of Dolichopodidae) of the Russian Arctic islands and Svalbard Archipelago
FIGURES 43, 44. Rhamphomyia (Pararhamphomyia) submacrura sp. nov., male, holotype. 43. habitus, lateral view; 44. terminalia, lateral view. Abbreviations: cerc—cercus; ej apod—ejaculatory apodeme; epand—epandrium; hypd—hypandrium; ph—phallus.
FIGURES 62–65 in The empidoid flies (Diptera: Empidoidea, exclusive of Dolichopodidae) of the Russian Arctic islands and Svalbard Archipelago
FIGURES 62–65. Rhamphomyia sublongiseta sp. nov., male. 62. habitus, holotype, lateral view; 63. postabdomen, lateral view; 64. terminalia; 65. phallus, lateral view. Abbreviations: cerc—cercus; ej apod—ejaculatory apodeme; epand—epandrium; hypd—hypandrium; ph—phallus.
FIGURES 41, 42 in The empidoid flies (Diptera: Empidoidea, exclusive of Dolichopodidae) of the Russian Arctic islands and Svalbard Archipelago
FIGURES 41, 42. Rhamphomyia (Pararhamphomyia) subfilicauda sp. nov., male, holotype. 41. habitus, lateral view; 42. terminalia, lateral view. Abbreviations: cerc—cercus; ej apod—ejaculatory apodeme; epand—epandrium; hypd—hypandrium; ph—phallus.
FIGURES 32–34 in The empidoid flies (Diptera: Empidoidea, exclusive of Dolichopodidae) of the Russian Arctic islands and Svalbard Archipelago
FIGURES 32–34. Rhamphomyia (Pararhamphomyia), male habitus, lateral view. 32. R. (P.) filicauda Henriksen & Lundbeck; 33. R. (P.) frigida Sinclair, Vajda, Saigusa & Shamshev; 34. R. (P.) hoeli Frey.
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Allen Brain Atlas
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International Brain Laboratory public data
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OpenNeuro
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