Ground Surface Temperature History Since the Last Glacial Maximum in Northeast Asia: Reconstructions From the Borehole Geotherms of the International Continental Scientific Drilling Program
Ground Surface Temperature History Since the Last Glacial Maximum in Northeast Asia: Reconstructions From the Borehole Geotherms of the International Continental Scientific Drilling Program
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东北亚末次盛冰期以来的地表温度历史：来自国际大陆科学钻探计划钻孔地热的重建
DOI：
10.1029/2023gl103055
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发表时间：
2023-04
影响因子：
5.2
通讯作者：
G. Jiang;Yuntao Tian;Qingtian Lv;M. Sandiford;Yizuo Shi;C. Zou;Feng Ma;Chenglong Deng;Lijuan He;Shengbiao Hu
中科院分区：
文献类型：
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作者：
G. Jiang;Yuntao Tian;Qingtian Lv;M. Sandiford;Yizuo Shi;C. Zou;Feng Ma;Chenglong Deng;Lijuan He;Shengbiao Hu
过去的地表温度是古气候重建的重要方面之一，可以从钻孔温度测量中反演。在这里，我们报告了国际大陆科学钻探计划SK-2 e的连续6，100米温度记录。我们从上部钻孔温度测井（<600 m）反演了过去的GST变化。在这个深度以下，局部的流体流动掩盖了古气候记录。自0.1-0.6 Kyr BP以来，反转产生约2 K GST上升，自20 Kyr BP以来约10 K上升。假设深层地下水流的影响为±5 K，自20 Kyr BP以来，反演的温度上升在8至12 K之间变化，这与末次盛冰期以来的先前报告一致。我们的结果强调了钻孔热流剖面作为气候变化记录的潜力以及气候校正对热流测定的重要性。
Past ground surface temperature (GST), one of the important aspects of paleoclimate reconstructions, can be inverted from borehole temperature measurements. Here, we report continuous 6,100‐m temperature logs in the International Continental Scientific Drilling Program SK‐2e. We inverted the past GST changes from upper borehole temperature logging (<600 m). Below this depth, localized fluid flow masks the paleoclimate record. Inversions yield an approximately 2 K GST rise since 0.1–0.6 Kyr BP and an approximately 10 K rise since 20 Kyr BP. Assuming a ±5 K influence from the deep groundwater flow, the inverted temperature rise has varied between 8 and 12 K since 20 Kyr BP, which is consistent with previous reports since the Last Glacial Maximum. Our results emphasize the potential of borehole heat‐flow profiles as a record of climate changes and the importance of climate correction for heat‐flow determinations.