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This study uses the electrical resistivity tomography method, in combination with field surveys and ground temperature monitoring, to investigate the distribution and degradation characteristics of permafrost and influencing factors at a typical monitoring site (MDS304) near the China-Russia Crude Oil Pipeline (CRCOP). The results show that the isolated permafrost in this area is vulnerable to further degradation because of warm oil pipelines and thermal erosion of rivers and ponds. The isolated permafrost is degrading in three directions at the MDS304 site. Specifically, the boundary between permafrost and talik is on both sides of the CRCOP, and permafrost is distributed as islands along a cross-section with a length of about 58\u201360 m. At present, the vertical hydrothermal influence range of the CRCOP increased to about 10\u201312 m. The active layer thickness has increased at a rate of 2.0 m\/a from about 2.4\u20136.8 m to 2.5\u201310.8 m from 2019 to 2021 along this cross-section. Permafrost degradation on the side of the CRCOP\u2019s second line is more visible due to the river\u2019s lateral thermal erosion, where the talik boundary has moved eastward about 12 m during 2018\u20132022 at a rate of 3.0 m\/a. It is 2.25 times the westward moving speed of the talik boundary on one side of the CRCOP\u2019s first line. In contrast, the talik boundary between the CRCOP\u2019s first line and the G111 highway also moves westward by about 4 m in 2019\u20132022. Moreover, the maximum displacement of the CRCOP\u2019s second line caused by the thawing of frozen soil has reached up to 1.78 m. The degradation of permafrost may threaten the long-term stability of the pipeline. Moreover, the research results can provide a useful reference for decision-makers to reduce the risk of pipeline freeze-thaw hazards.<\/jats:p>","DOI":"10.3390\/rs15030707","type":"journal-article","created":{"date-parts":[[2023,1,26]],"date-time":"2023-01-26T02:29:31Z","timestamp":1674700171000},"page":"707","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":11,"title":["Distribution and Degradation Processes of Isolated Permafrost near Buried Oil Pipelines by Means of Electrical Resistivity Tomography and Ground Temperature Monitoring: A Case Study of Da Xing\u2019anling Mountains, Northeast China"],"prefix":"10.3390","volume":"15","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-6039-0192","authenticated-orcid":false,"given":"Gang","family":"Wu","sequence":"first","affiliation":[{"name":"State Key Laboratory of Frozen Soil Engineering, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou 730000, China"},{"name":"School of Engineering Science, University of Chinese Academy of Sciences, Beijing 100049, China"},{"name":"Da Xing\u2019anling Observation and Research Station of Frozen-Ground Engineering and Environment, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Daxing\u2019anling 165000, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-4651-6251","authenticated-orcid":false,"given":"Guoyu","family":"Li","sequence":"additional","affiliation":[{"name":"State Key Laboratory of Frozen Soil Engineering, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou 730000, China"},{"name":"Da Xing\u2019anling Observation and Research Station of Frozen-Ground Engineering and Environment, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Daxing\u2019anling 165000, China"},{"name":"College of Architecture and Civil Engineering, Xi\u2019an University of Science and Technology, Xi\u2019an 710054, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Yapeng","family":"Cao","sequence":"additional","affiliation":[{"name":"State Key Laboratory of Frozen Soil Engineering, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou 730000, China"},{"name":"Da Xing\u2019anling Observation and Research Station of Frozen-Ground Engineering and Environment, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Daxing\u2019anling 165000, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-5357-2681","authenticated-orcid":false,"given":"Dun","family":"Chen","sequence":"additional","affiliation":[{"name":"State Key Laboratory of Frozen Soil Engineering, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou 730000, China"},{"name":"Da Xing\u2019anling Observation and Research Station of Frozen-Ground Engineering and Environment, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Daxing\u2019anling 165000, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-4760-7892","authenticated-orcid":false,"given":"Shunshun","family":"Qi","sequence":"additional","affiliation":[{"name":"State Key Laboratory of Frozen Soil Engineering, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou 730000, China"},{"name":"School of Engineering Science, University of Chinese Academy of Sciences, Beijing 100049, China"},{"name":"Da Xing\u2019anling Observation and Research Station of Frozen-Ground Engineering and Environment, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Daxing\u2019anling 165000, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Fei","family":"Wang","sequence":"additional","affiliation":[{"name":"Faculty of Civil Engineering and Mechanics, Jiangsu University, Zhenjiang 212013, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-8696-0218","authenticated-orcid":false,"given":"Kai","family":"Gao","sequence":"additional","affiliation":[{"name":"State Key Laboratory of Frozen Soil Engineering, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou 730000, China"},{"name":"School of Engineering Science, University of Chinese Academy of Sciences, Beijing 100049, China"},{"name":"Da Xing\u2019anling Observation and Research Station of Frozen-Ground Engineering and Environment, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Daxing\u2019anling 165000, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-3652-3957","authenticated-orcid":false,"given":"Qingsong","family":"Du","sequence":"additional","affiliation":[{"name":"State Key Laboratory of Frozen Soil Engineering, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou 730000, China"},{"name":"School of Engineering Science, University of Chinese Academy of Sciences, Beijing 100049, China"},{"name":"Da Xing\u2019anling Observation and Research Station of Frozen-Ground Engineering and Environment, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Daxing\u2019anling 165000, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Xinbin","family":"Wang","sequence":"additional","affiliation":[{"name":"State Key Laboratory of Frozen Soil Engineering, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou 730000, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Hongyuan","family":"Jing","sequence":"additional","affiliation":[{"name":"PipeChina North Pipeline Company, Langfang 065008, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Zhenrong","family":"Zhang","sequence":"additional","affiliation":[{"name":"Daqing (Jiagedaqi) Oil Gas Transportation Branch, PipeChina North Pipeline Company, Jiagedaqi 165000, China"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1968","published-online":{"date-parts":[[2023,1,25]]},"reference":[{"key":"ref_1","unstructured":"P\u00f6rtner, H.-O., Roberts, D.C., Tignor, M.M.B., Poloczanska, E.S., Mintenbeck, K., Alegr\u00eda, A., Craig, M., Langsdorf, S., L\u00f6schke, S., and M\u00f6ller, V. 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