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
  • PANGAEA  (9)
Collection
Keywords
Publisher
Years
  • 1
    facet.materialart.
    Unknown
    Sulfur hexafluoride (SF6) traces of Moulin L41A on the Greenland Ice Sheet measured in summer 2012 (2021)
    PANGAEA
    Details
    Publication Date: 2023-01-30
    Description: SF6 gas traces were injected into Moulin L41A, and samples were collected in the proglacial river near Leverett Glacier terminus (67.09N, -50.23E). A total of 11 traces were carried out between 16 June and 6 August, 2012. Tracers were injected at ~19:00 hrs, shortly after the peak daily moulin discharge (typically between 15:00 and 19:00 hrs). Tracer concentrations were monitored by collecting water samples from the proglacial river draining Leverett Glacier and were analysed by a Cambridge Scientific 300-series gas chromatograph fitted with an electron capture detector. Analytical errors (estimated from the analysis of duplicate samples) were below 15% and the level of detection of SF6 was below 0.005 parts per trillion by mass in water. The analytical method was more sensitive than that employed in our previous study at this site (Chandler et al., 2013, http://dx.doi.org/10.1038/ngeo1737) and is described in detail by Chandler et el. (In review, Earth and Planetary Science Letters)
    Keywords: DATE/TIME; Gas chromatograph with an electron capture detector (GC-ECD); Greenland; Greenland ice sheet; hydrology; ICEOBS; Ice observation; Ice Sheet; Identification; moulin; Moulin_L41A; subglacial; Sulfur hexafluoride, SF6; Time in hours; tracing
    Type: Dataset
    Format: text/tab-separated-values, 1137 data points
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    DATA PANGAEA
  • 2
    facet.materialart.
    Unknown
    Supraglacial river discharge into Moulin L41A on the Greenland Ice Sheet measured in spring/summer 2012 (2021)
    PANGAEA
    Details
    Publication Date: 2023-01-30
    Description: Supraglacial river discharge was measured by monitoring water depth with a custom-built pressure sensor, at 1-minute intervals, and converting depth to discharge with a rating curve established from salt dilution gauging. Here we report 1-hour means of the 1-minute measurements. This method is well suited to supraglacial river gauging as the electrical conductivity of supraglacial melt water is very low. The pressure sensor was installed on the bottom of the channel and was able to move downwards with the ice surface as the channel gradually incised. Full details are provided in the online supplement to Wadham et al. (2016) at https://doi.org/10.5194/bg-13-6339-2016.
    Keywords: Calculated after Wadham et al. (2016); DATE/TIME; Greenland; Greenland ice sheet; hydrology; ICEOBS; Ice observation; Ice Sheet; moulin; Moulin_L41A; River discharge, hourly maximum; River discharge, hourly mean; River discharge, hourly minimum; subglacial; tracing
    Type: Dataset
    Format: text/tab-separated-values, 3492 data points
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    DATA PANGAEA
  • 3
    facet.materialart.
    Unknown
    Ice ablation record from the Greenland Ice Sheet measured in spring/summer 2012 (2021)
    PANGAEA
    Details
    Publication Date: 2023-01-30
    Description: Surface ablation rates were measured daily using changes in ice surface height at five ablation stakes arranged in a cross configuration at ~2 m separation. The stakes were located in the supraglacial hydrological catchment feeding Moulin L41A. The stakes were installed in holes deeper than the length of the stake (so each measurement of ice surface height was made from the ice surface down to the top of the stake) to avoid the problem of enhanced surface melting caused by solar radiation absorbed by the stake. All ablation measurements were carried out by the same observer to ensure consistency for example in the interpretation of the level of a rough ice surface. A full description was provided by Chandler et al. (2015) at https://doi.org/10.5194/tc-9-487-2015.
    Keywords: Ablation; Ablation, standard deviation; After Chandler et al. (2015); DATE/TIME; Greenland; Greenland ice sheet; hydrology; ICEOBS; Ice observation; Ice Sheet; moulin; Moulin_L41A; subglacial; tracing
    Type: Dataset
    Format: text/tab-separated-values, 148 data points
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    DATA PANGAEA
  • 4
    facet.materialart.
    Unknown
    Westwards component of ice surface velocity on the Greenland Ice Sheet measured in spring/summer 2012 (2021)
    PANGAEA
    Details
    Publication Date: 2023-01-30
    Description: Ice surface motion was recorded by five dual-frequency Leica SR520 GPS receivers deployed on poles drilled 2 m into the ice surface, within 700 m of Moulin L41A at 66.97N -49.27E. GPS data were post-processed kinematically (King, 2004, http://dx.doi.org/10.3189/172756504781829747) with Track v.1.27 software (Chen, 1998, Ph.D. thesis, Cambridge MA, USA) against bedrock-mounted reference stations using a precise ephemeris from the International GNSS Service )Dow et al., 2009, http://dx.doi.org/10.1007/s00190-008-0300-3). Reference stations were located 1 km from the terminus of Russell Glacier and at Kellyville, giving baseline lengths less than 41 km. Due to gaps in the time series caused by power outage, we averaged the horizontal velocities recorded at the five stations with the fewest gaps to give a single record. Positions were recorded at 30 s intervals; 1-hr means were then smoothed using a 5-point binomial filter. Since there was generally little difference in velocity between the stakes, the mean velocity across the network gives a better indication of the seasonal pattern of ice motion with fewer gaps than in the individual records. Velocities are centred differences of hourly displacements. GPS stakes required periodic re-drilling as they gradually melted out.
    Keywords: DATE/TIME; GPS receiver (Leica SR520); Greenland; Greenland ice sheet; hydrology; ICEOBS; Ice observation; Ice Sheet; Ice surface velocity; moulin; Moulin_L41A; subglacial; tracing
    Type: Dataset
    Format: text/tab-separated-values, 3125 data points
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    DATA PANGAEA
  • 5
    facet.materialart.
    Unknown
    Proglacial river discharge from the Greenland Ice Sheet measured in spring/summer 2012 (2021)
    PANGAEA
    Details
    Publication Date: 2023-03-03
    Description: Proglacial river discharge was monitored using stage measurements (collected by a HOBO pressure sensor) and dye dilution gauging at a stable bedrock section near the terminus of Leverett Glacier, 67.09N -50.23E. Here we report hourly means of measurements made at 1 minute intervals. The same method has been used at this site over several melt seasons and is described in detail by Bartholomew et al. (2011, http://dx.doi.org/10.1029/2011GL047063) and Tedstone et al. (2013, http://dx.doi.org/10.1073/pnas.1315843110).
    Keywords: DATE/TIME; Greenland; Greenland ice sheet; hydrology; Ice Sheet; L Atalante; Leverett_glacier_HOBO; moulin; Pressure transducer, HOBO; River discharge, hourly mean; see description in data abstract; subglacial; tracing; ZAIROV
    Type: Dataset
    Format: text/tab-separated-values, 1592 data points
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    DATA PANGAEA
  • 6
    facet.materialart.
    Unknown
    Fluorescence properties of dissolved organic matter from Leverett Glacier outflow (2020)
    PANGAEA
    Details
    Publication Date: 2023-10-28
    Description: The outflow of Leverett Glacier, a large land-terminating glacier of the Greenland Ice Sheet was sampled over the 2015 ablation season. Dissolved organic carbon (DOC) concentrations, dissolved organic matter (DOM) fluorescence, and hydrogeochemical data (e.g. discharge, specific conductivity, pH, and turbidity) were analyzed to assess changing DOM sources over the melt season. DOC concentrations and red-shifted fluorescence suggest terrestrial inputs from overridden soils dominated DOM early season inputs before progressive dilution with increasing discharge. During the outburst period, supraglacial drainage events disrupted the subglacial drainage system and introduced dominant protein-like fluorescence signatures not observed in basal flow. These results suggest that subglacial hydrology and changing water sources influence exported DOC concentration and DOM composition, differentiated through fluorescence characteristics. The outburst and post-outburst periods were characterized by protein-like fluorescence from supraglacial and potentially subglacial microbial sources.
    Keywords: Campbell Scientific 247-L Conductivity and Temperature Probe; Carbon, organic, dissolved; Carbon, organic, dissolved load; Conductivity; DATE/TIME; Day of the year; Dissolved Organic Matter; DOM; Event label; Flow rate; Fluorescence; Fluorescence, dissolved organic matter, at 317 nm wavelength; Fluorescence, dissolved organic matter, at 368 nm wavelength; Fluorescence, dissolved organic matter, at 416 nm wavelength; Fluorescence, dissolved organic matter, at 425 nm wavelength; Fluorescence, dissolved organic matter, at 483 nm wavelength; Fluorescence spectrometer, AquaLog, HORIBA JobinYvon; glaciers; Greenland; Honeywell Durafet pH sensors; Lachat QuickChem 8500 flow injection autoanalyser; L Atalante; Leverett_glacier_basal_ice; Leverett_glacier_snow; Leverett_glacier_time_series; Nitrogen in nitrate; PARAFAC; Period; pH; Phosphorus in orthophosphate; Pressure transducer, HOBO; Roorkee Industries Suspended Sediment Sampler USDH-48; Shimadzu TOC-L total organic carbon analyzer; SNOW; Snow/ice sample; Suspended particulate matter; Thermo Scientific Dionex IonPac AS11-HC-4μm Anion-Exchange Column fitted to a Thermo Scientific Dionex ICS-5000 Ion Chromatography; ZAIROV
    Type: Dataset
    Format: text/tab-separated-values, 785 data points
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    DATA PANGAEA
  • 7
    facet.materialart.
    Unknown
    Biogeochemical and Silicon Isotopic Data for Dry and Wet-based Glaciers in Antarctica (2020)
    PANGAEA
    Details
    Publication Date: 2023-10-28
    Description: This data product contains dissolved silicon concentrations and isotopic composition, major ion concentrations and discharge for streams in Potter Peninsula, King George Island and Commonwealth Stream, McMurdo Dry Valleys, Antarctica.
    Keywords: Antarctica; Calcium; Chloride; CommonwealthStreamGauge; CommonwealthStreamMouth; DATE/TIME; Day of the year; Discharge; Event label; IMCOAST/IMCONet; Impact of climate induced glacier melt on marine coastal systems, Antarctica; LATITUDE; LONGITUDE; Magnesium; Potassium; PotterPeninsula_W19; PotterPeninsula_W20; PotterPeninsula_W21; PotterPeninsula_W22; PotterPeninsula_W23; PotterPeninsula_W24; PotterPeninsula_W25; PotterPeninsula_W35; PotterPeninsula_W39; PotterPeninsula_W40; PotterPeninsula_W41; PotterPeninsula_W45; PotterPeninsula_W49; PotterPeninsula_W50; Potter Peninsula, King George Island, Western Antarctica; Priority Programme 1158 Antarctic Research with Comparable Investigations in Arctic Sea Ice Areas; Ratio; Sample code/label; Silicon; Silicon Isotope Geochemistry; Site; Sodium; SPP1158; Stream Weathering; Subglacial Weathering; Sulfate; Water sample; WS; δ30Si, error; δ30Si, silicon dissolved
    Type: Dataset
    Format: text/tab-separated-values, 608 data points
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    DATA PANGAEA
  • 8
    facet.materialart.
    Unknown
    Major ion and silicon isotope composition of glacial meltwaters, Leverett and Kiattuut glacier, Greenland (2018)
    PANGAEA
    In:  Supplement to: Hatton, Jade Elizabeth; Hendry, Katharine R; Hawkings, Jonathan; Wadham, Jemma; Kohler, Tyler; Stibal, Marek; Beaton, Alexander; Bagshaw, Elizabeth; Telling, J (2019): Investigation of subglacial weathering under the Greenland Ice Sheet using silicon isotopes. Geochimica et Cosmochimica Acta, 247, 191-206, https://doi.org/10.1016/j.gca.2018.12.033
    Details
    Publication Date: 2023-09-30
    Description: This data product contains dissolved and amorphous particulate silicon concentrations and isotopic compositions, and ancillary data (discharge, conductivity, suspended particulate matter, pH, major ion data) for glacial meltwaters collected from two glaciers in Greenland: Leverett Glacier (67 degrees N, 50 degrees W) and Kiattuut Sermiat (61 degrees N, 45 degrees W).
    Keywords: Aluminium; Bicarbonate; Calcium; Chloride; Conductivity, electrical; DATE/TIME; Day of the year; Event label; Fluoride; Glacier discharge; Greenland; Ion chromatography; Kiattuut_glacier; Leverett_glacier; Magnesium; Multi-Collector ICP-MS (MC-ICP-MS); Nitrate; Original value; pH; Potassium; Silicon; Silicon, particulate amorphous; Sodium; Sulfate; Suspended particulate matter; Water sample; WS; Year of observation; δ30Si, silicon dissolved; δ30Si, silicon particulate amorphous
    Type: Dataset
    Format: text/tab-separated-values, 6107 data points
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    DATA PANGAEA
  • 9
    facet.materialart.
    Unknown
    Silicon isotopes in Arctic and sub-Arctic glacial meltwaters (2019)
    PANGAEA
    In:  Supplement to: Hatton, Jade Elizabeth; Hendry, Katharine R; Hawkings, Jonathan; Wadham, Jemma; Opfergelt, Sophie; Kohler, Tyler; Yde, Jacob; Stibal, Marek; Žárský, Jakub (2019): Silicon isotopes in Arctic and sub-Arctic glacial meltwaters: the role of the subglacial weathering in the silicon cycle. Proceedings of the Royal Society A-Mathematical Physical and Engineering Sciences, 475(2228), https://doi.org/10.1098/rspa.2019.0098
    Details
    Publication Date: 2023-09-30
    Description: This data product contains dissolved and amorphous particulate silicon concentrations and isotopic compositions, and ancillary data (discharge, conductivity, suspended particulate matter, pH, major ion data) for glacial meltwaters collected from Pan Arctic and Subarctic glacial catchments.
    Keywords: Austerdalsbreen_glacier; Bicarbonate; Bicarbonate ion; Boverbreen_glacier; Calcium; Calcium cation; Chloride; Chloride anion; Conductivity, electrical; DATE/TIME; Disko_10_glacier; Disko_11_glacier; Disko_13_glacier; Disko_6_glacier; Drangajoekull_glacier; Eagle_glacier; Ebbabreen_glacier; Eyjabakkajoekull_glacier; Fluoride; Glacier; Herbert_glacier; ICY-LAB; Isotope CYcling in the LABrador Sea; Kuannersuit_glacier; Langjoekull_glacier; LATITUDE; Lemon_glacier; LONGITUDE; Magnesium; Magnesium cation; Mendenhall_glacier; MULT; Multiple investigations; Nansenbreen_glacier; pH; Potassium; Potassium cation; Ratio; Sefstroembreen_glacier; Silicon; Silicon, particulate amorphous; Skaftrafelljokull_glacier; Sodium; Sodium cation; Solheimajoekull_glacier; Styggedalsbreen_glacier; Sulfate; Sulfate anion; Suspended particulate matter; Temperature, water; δ30Si, silicon dissolved; δ30Si, silicon particulate amorphous
    Type: Dataset
    Format: text/tab-separated-values, 529 data points
    Location Call Number Expected 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...