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  • 1
    Electronic Resource
    Electronic Resource
    Stress-controlled silicon nitride film with high optical transmittance prepared by an ultrahigh-vacuum electron cyclotron resonance plasma chemical-vapor deposition system (1994)
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 64 (1994), S. 3249-3251 
    Details
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: An ultrahigh-vaccuum electron cyclotron resonance plasma chemical-vapor deposition system with a substrate heating component has been applied to deposit silicon nitride film. Low background pressure (∼5×10−9 Torr) and efficient plasma excitation at a low deposition pressure (〈10−3 Torr) result in a low oxygen impurity content in the silicon nitride film. Process flexibility of this system, i.e., control of the SiH4 to NH3 flow ratio, deposition pressure, and substrate temperature, allows the deposition of near-stoichiometry silicon nitride film with a high optical transmittance as well as a suppressed amount of hydrogen impurity and a low film stress.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.111300
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    Paper (German National Licenses)
    Fulltext
  • 2
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    Early Holocene methane records from Siple Dome, Antarctica (2017)
    PANGAEA
    In:  Supplement to: Yang, Ji-Woong; Ahn, Jinho; Brook, Edward J; Ryu, Yeongjun (2017): Atmospheric methane control mechanisms during the early Holocene. Climate of the Past, 13(9), 1227-1242, https://doi.org/10.5194/cp-13-1227-2017
    Details
    Publication Date: 2023-01-13
    Description: Below we present the early Holocene discrete CH4 dataset from Siple Dome (SDMA), Antarctica, measured at Oregon State University (OSU) and Seoul National University (SNU) by discrete wet extraction technique. Analytical method is described in Grachev et al. (2009, doi:10.1029/2008GB003330) and Mitchell et al. (2011, doi:10.1029/2010JG001441) for OSU data, and Yang et al. (2017) for SNU data. SDMA CH4 composite record was constructed by combining OSU data for 7.6 - 9.0 ka and SNU data for 9.0 - 11.6 ka to maximize temporal resolution. SDMA gas chronology was synchronized to Greenland Ice Core Chronology 2005 (GICC05) scale. For detailed description on synchronization and age uncertainty please refer to Yang et al. (2017).
    Keywords: Ice_core_diverse; ICEDRILL; Ice drill; Sampling/drilling ice; Siple_Dome; Siple Coast
    Type: Dataset
    Format: application/zip, 2 datasets
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  • 3
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    Early Holocene discrete methane record from Siple Dome (SDMA), Antarctica, measured at Oregon State University (2017)
    PANGAEA
    Details
    Publication Date: 2023-01-13
    Keywords: AGE; DEPTH, ice/snow; Ice_core_diverse; ICEDRILL; Ice drill; Methane; Sampling/drilling ice; Siple_Dome; Siple Coast
    Type: Dataset
    Format: text/tab-separated-values, 81 data points
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  • 4
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    Early Holocene discrete methane record from Siple Dome (SDMA), Antarctica, measured at Seoul National University (2017)
    PANGAEA
    Details
    Publication Date: 2023-01-13
    Keywords: AGE; DEPTH, ice/snow; Ice_core_diverse; ICEDRILL; Ice drill; Methane; Sampling/drilling ice; Siple_Dome; Siple Coast
    Type: Dataset
    Format: text/tab-separated-values, 108 data points
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  • 5
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    Millennial variations of atmospheric CO2 during the early Holocene (11.7–7.4 ka), based on Siple Dome ice core (2022)
    PANGAEA
    Details
    Publication Date: 2023-01-30
    Description: We present a new high-resolution record of atmospheric CO2 from the Siple Dome ice core, Antarctica over the early Holocene (11.7–7.4 ka) that quantifies natural CO2 variability on millennial timescales under interglacial climate conditions. We reconstructed atmospheric CO2 concentrations with ages between 11.7 and 9.0 ka from the Siple Dome ice core. 247 individual ice samples from 99 depth intervals were measured by needle cracker dry extraction and gas chromatography methods at Seoul National University (SNU). To extend the record to 7.4 ka, we made a composite dataset using a previous CO2 record from the Siple Dome ice core covering 9.0–7.4 ka measured by the needle cracker system at Oregon State University (OSU) (Ahn et al., 2014, https://doi.org/10.1002/2013gl058177). To make a composite record of atmospheric CO2, we tested for bias between the two data sets. Siple Dome samples from 7 depth intervals between 538.55–490. 16 samples were analysed at both laboratories (Ahn et al., 2014, https://doi.org/10.1002/2013gl058177). The SNU measurements were higher than the OSU measurements by 0.3±0.7 ppm (1σ) on average, indicating that the SNU and OSU results agree well. The small offset of 0.3 ppm was added to OSU data before combining them with the SNU results. The Siple Dome samples are placed on the improved Siple Dome chronology developed by Yang et al. (2017, https://doi.org/10.1594/PANGAEA.880561), which is aligned with the Greenland Ice Core Chronology, 2005 (GICC05) using the synchronization of CH4 and δ18Oatm time series.
    Keywords: AGE; Antarctica; carbon dioxide; Carbon dioxide; Carbon dioxide, standard error; DEPTH, ice/snow; Early Holocene; Ice_core_diverse; Ice core; ICEDRILL; Ice drill; Reference/source; Sampling/drilling ice; Siple_Dome; Siple Coast; Siple Dome
    Type: Dataset
    Format: text/tab-separated-values, 612 data points
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  • 6
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    Ice surface measurements from Larsen blue ice area, East Antarctica (2022)
    PANGAEA
    Details
    Publication Date: 2023-01-30
    Description: Blue ice areas (BIAs) have several advantages for reconstructing past climate. However, the complicated ice flow in the areas hinders constraining the age. We apply state-of-the-art techniques and show that the ages cover the last deglaciation for Larsen BIA. Our study demonstrates that Larsen BIA in Northern Victoria Land helps in reconstructing the past climate during the last deglaciation. This data set presents gas composition (CO2, CH4, N2O, δ18Oatm, δ15N-N2, δO2/N2, δAr/N2), stable water isotopes (δ2Hice, δ18Oice), and the chronology of Larsen BIA. The ice cores were collected in January 2019 in Northern Victoria Land, East Antarctica. Gas composition analysis was conducted at Seoul National University and National Institute of Polar Research. Stable water isotopes were analyzed at Korea Polar Research Institute. Data sets were also published as a supplement of Lee et al. (2022) titled with “Chronostratigraphy of Larsen blue ice area in Northern Victoria Land, East Antarctica, and its implications for paleoclimate”, The Cryosphere.
    Keywords: Age model, WD2014; Antarctic ice core chronology (AICC2012); blue ice area; carbon dioxide; Core section label; d15N-N2; d18Oatm; Deuterium excess; Distance; Ice age; Ice core; Isotope ratio mass spectrometry; Larsen; Larsen_BIA_2019; Methane; nitrous oxide; stable water isotopes; δ18O, water; δ Deuterium, water
    Type: Dataset
    Format: text/tab-separated-values, 742 data points
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  • 7
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    Ice age uncertainty in ice cores from Larsen blue ice area, East Antarctica (2022)
    PANGAEA
    Details
    Publication Date: 2023-01-30
    Description: Blue ice areas (BIAs) have several advantages for reconstructing past climate. However, the complicated ice flow in the areas hinders constraining the age. We apply state-of-the-art techniques and show that the ages cover the last deglaciation for Larsen BIA. Our study demonstrates that Larsen BIA in Northern Victoria Land helps in reconstructing the past climate during the last deglaciation. This data set presents gas composition (CO2, CH4, N2O, δ18Oatm, δ15N-N2, δO2/N2, δAr/N2), stable water isotopes (δ2Hice, δ18Oice), and the chronology of Larsen BIA. The ice cores were collected in January 2019 in Northern Victoria Land, East Antarctica. Gas composition analysis was conducted at Seoul National University and National Institute of Polar Research. Stable water isotopes were analyzed at Korea Polar Research Institute. Data sets were also published as a supplement of Lee et al. (2022) titled with “Chronostratigraphy of Larsen blue ice area in Northern Victoria Land, East Antarctica, and its implications for paleoclimate”, The Cryosphere.
    Keywords: blue ice area; carbon dioxide; d15N-N2; d18Oatm; Ice age; Ice age, standard deviation; Ice core; Larsen; Larsen_BIA_2019; Methane; nitrous oxide; stable water isotopes
    Type: Dataset
    Format: text/tab-separated-values, 28 data points
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  • 8
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    Properties of ice core #23 from Larsen blue ice area, East Antarctica (2022)
    PANGAEA
    Details
    Publication Date: 2023-01-30
    Description: Blue ice areas (BIAs) have several advantages for reconstructing past climate. However, the complicated ice flow in the areas hinders constraining the age. We apply state-of-the-art techniques and show that the ages cover the last deglaciation for Larsen BIA. Our study demonstrates that Larsen BIA in Northern Victoria Land helps in reconstructing the past climate during the last deglaciation. This data set presents gas composition (CO2, CH4, N2O, δ18Oatm, δ15N-N2, δO2/N2, δAr/N2), stable water isotopes (δ2Hice, δ18Oice), and the chronology of Larsen BIA. The ice cores were collected in January 2019 in Northern Victoria Land, East Antarctica. Gas composition analysis was conducted at Seoul National University and National Institute of Polar Research. Stable water isotopes were analyzed at Korea Polar Research Institute. Data sets were also published as a supplement of Lee et al. (2022) titled with “Chronostratigraphy of Larsen blue ice area in Northern Victoria Land, East Antarctica, and its implications for paleoclimate”, The Cryosphere.
    Keywords: Age model, WD2014; Antarctic ice core chronology (AICC2012); blue ice area; carbon dioxide; d15N-N2; d18Oatm; DEPTH, ice/snow; Deuterium excess; Ice age; Ice core; Isotope ratio mass spectrometry; Larsen; Larsen_BIA_2019; Methane; nitrous oxide; stable water isotopes; δ18O, water; δ Deuterium, water
    Type: Dataset
    Format: text/tab-separated-values, 260 data points
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  • 9
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    Ice properties at core depth 1.95 m in ice cores from Larsen blue ice area, East Antarctica (2022)
    PANGAEA
    Details
    Publication Date: 2023-01-30
    Description: Blue ice areas (BIAs) have several advantages for reconstructing past climate. However, the complicated ice flow in the areas hinders constraining the age. We apply state-of-the-art techniques and show that the ages cover the last deglaciation for Larsen BIA. Our study demonstrates that Larsen BIA in Northern Victoria Land helps in reconstructing the past climate during the last deglaciation. This data set presents gas composition (CO2, CH4, N2O, δ18Oatm, δ15N-N2, δO2/N2, δAr/N2), stable water isotopes (δ2Hice, δ18Oice), and the chronology of Larsen BIA. The ice cores were collected in January 2019 in Northern Victoria Land, East Antarctica. Gas composition analysis was conducted at Seoul National University and National Institute of Polar Research. Stable water isotopes were analyzed at Korea Polar Research Institute. Data sets were also published as a supplement of Lee et al. (2022) titled with “Chronostratigraphy of Larsen blue ice area in Northern Victoria Land, East Antarctica, and its implications for paleoclimate”, The Cryosphere.
    Keywords: Age model, WD2014; Antarctic ice core chronology (AICC2012); blue ice area; carbon dioxide; Core section number; d15N-N2; d18Oatm; Deuterium excess; Distance; Ice age; Ice core; Isotope ratio mass spectrometry; Larsen; Larsen_BIA_2019; Methane; nitrous oxide; stable water isotopes; δ18O, water; δ Deuterium, water
    Type: Dataset
    Format: text/tab-separated-values, 315 data points
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  • 10
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    Gas age uncertainty in ice cores from Larsen blue ice area, East Antarctica (2022)
    PANGAEA
    Details
    Publication Date: 2023-01-30
    Description: Blue ice areas (BIAs) have several advantages for reconstructing past climate. However, the complicated ice flow in the areas hinders constraining the age. We apply state-of-the-art techniques and show that the ages cover the last deglaciation for Larsen BIA. Our study demonstrates that Larsen BIA in Northern Victoria Land helps in reconstructing the past climate during the last deglaciation. This data set presents gas composition (CO2, CH4, N2O, δ18Oatm, δ15N-N2, δO2/N2, δAr/N2), stable water isotopes (δ2Hice, δ18Oice), and the chronology of Larsen BIA. The ice cores were collected in January 2019 in Northern Victoria Land, East Antarctica. Gas composition analysis was conducted at Seoul National University and National Institute of Polar Research. Stable water isotopes were analyzed at Korea Polar Research Institute. Data sets were also published as a supplement of Lee et al. (2022) titled with “Chronostratigraphy of Larsen blue ice area in Northern Victoria Land, East Antarctica, and its implications for paleoclimate”, The Cryosphere.
    Keywords: blue ice area; carbon dioxide; d15N-N2; d18Oatm; Gas age; Gas age, standard deviation; Ice core; Larsen; Larsen_BIA_2019; Methane; nitrous oxide; stable water isotopes
    Type: Dataset
    Format: text/tab-separated-values, 24 data points
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