USGS Benchmark Glacier Mass Balance and Project Data

USGS Benchmark Glacier Mass Balance and Project Data
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美国地质勘探局基准冰川质量平衡和项目数据

DOI:
10.5066/f7bg2n8r
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发表时间:
2018
期刊:
--
影响因子:
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通讯作者:
E. Baker
E. Baker
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--
文献类型:
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作者:
E. Baker

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自20世纪50年代末以来,美国地质勘探局一直在三个北美冰川上保持长期的冰川质量平衡计划。1958年开始在西澳的南喀斯喀特冰川进行测量,1966年扩展到阿拉斯加的古尔卡纳和金刚狼冰川,2005年又扩展到蒙大拿的斯佩里冰川。对阿拉斯加的柠檬溪和塔库冰川进行了额外的测量,以补充朱诺冰原研究计划收集的数据(JIRP; Pelto等人,2013年)的报告。将点冰川学数据的直接实地测量与天气和大地测量数据相结合,以常规和参考表面格式得出每个冰川的冰川范围的季节性和年度表面质量平衡解(Cogley等人,2011年)。货车Beusekom等人(2010年)介绍了计算整个冰川表面物质平衡的更多细节。以常规和参考表面格式计算每个冰川的季节性和年度时间步长的物质平衡(Cogley等人,2011年)。分析框架(货车Beusekom等人,2010年; O 'Neel等人,2014年)在每个冰川都是相同的,以便能够在输出的时间序列之间进行交叉比较。Cogley and others(2011)Glossary of Glacier mass balance.物质平衡是通过直接实地测量地表物质平衡,结合天气数据和图像分析计算出来的。
Since the late 1950s, the USGS has maintained a long-term glacier mass-balance program at three North American glaciers. Measurements began on South Cascade Glacier, WA in 1958, expanding to Gulkana and Wolverine glaciers, AK in 1966, and later Sperry Glacier, MT in 2005. Additional measurements have been made on Lemon Creek and Taku glaciers, AK to compliment data collected by the Juneau Icefield Research Program (JIRP; Pelto et al., 2013). Direct field measurements of point glaciological data are combined with weather and geodetic data to derive glacier-wide seasonal and annual surface mass balance solutions of each glacier in conventional and reference surface formats (Cogley et al., 2011). Additional details on the calculation of glacier-wide surface mass balance are described in Van Beusekom et al. (2010). Mass balance is calculated at both a seasonal and annual time-step at each glacier in both a conventional and reference surface format (Cogley and others, 2011). The analysis framework (Van Beusekom and others, 2010; O’Neel and others, 2014) is identical at each glacier to enable cross-comparison between output time series. Vocabulary used follows Cogley and others (2011) Glossary of glacier mass balance. Mass balance is calculated from direct field measurements of surface mass balance in combination with weather data and imagery analyses.