{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,11,4]],"date-time":"2025-11-04T23:47:36Z","timestamp":1762300056260,"version":"build-2065373602"},"reference-count":88,"publisher":"MDPI AG","issue":"9","license":[{"start":{"date-parts":[[2022,5,5]],"date-time":"2022-05-05T00:00:00Z","timestamp":1651708800000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100001809","name":"National Natural Science Foundation of China","doi-asserted-by":"publisher","award":["42004137","22NSFSC3946","F19C20000110005","2014-037-R.0","2014-037-R-1-2017"],"award-info":[{"award-number":["42004137","22NSFSC3946","F19C20000110005","2014-037-R.0","2014-037-R-1-2017"]}],"id":[{"id":"10.13039\/501100001809","id-type":"DOI","asserted-by":"publisher"}]},{"name":"The Natural Science Foundation of Sichuan Province of China","award":["42004137","22NSFSC3946","F19C20000110005","2014-037-R.0","2014-037-R-1-2017"],"award-info":[{"award-number":["42004137","22NSFSC3946","F19C20000110005","2014-037-R.0","2014-037-R-1-2017"]}]},{"name":"The Italian Space Agency","award":["42004137","22NSFSC3946","F19C20000110005","2014-037-R.0","2014-037-R-1-2017"],"award-info":[{"award-number":["42004137","22NSFSC3946","F19C20000110005","2014-037-R.0","2014-037-R-1-2017"]}]},{"name":"ASI-INFN","award":["42004137","22NSFSC3946","F19C20000110005","2014-037-R.0","2014-037-R-1-2017"],"award-info":[{"award-number":["42004137","22NSFSC3946","F19C20000110005","2014-037-R.0","2014-037-R-1-2017"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Remote Sensing"],"abstract":"<jats:p>This work is an attempt to critically analyze the correlation between great deep-focus undersea earthquake and possible ionospheric anomalies. The significant TEC (total electron content) temporal and spatial anomalies were detected over the epicenter of 2007 Mw7.5 Jakarta\u2013Java earthquake, and they coincide well with the striking plasma anomalies in the ionosphere in situ observed by the LEO (low Earth orbit) satellite. The localization and synchronization of the disturbances during the earthquake suggest that these ionospheric anomalies are highly related to this large undersea earthquake. In order to identify this correlation, we made efforts to distinguish seismo-associated signals from large electromagnetic noise due to solar and geomagnetic activities, natural non-seismic sources and known artificial signals. Nevertheless, the difficulties of this work should be recognized and approached with caution. This special (deep-focus and undersea) case study here provides us with valuable information on the study of lithosphere\u2013atmosphere\u2013ionosphere (LAI) coupling process and reminds us that deep-focus undersea seismic events need to be treated more carefully and discreetly in the future.<\/jats:p>","DOI":"10.3390\/rs14092211","type":"journal-article","created":{"date-parts":[[2022,5,6]],"date-time":"2022-05-06T02:46:39Z","timestamp":1651805199000},"page":"2211","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":5,"title":["Are the Significant Ionospheric Anomalies Associated with the 2007 Great Deep-Focus Undersea Jakarta\u2013Java Earthquake?"],"prefix":"10.3390","volume":"14","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-2313-1057","authenticated-orcid":false,"given":"Dan","family":"Tao","sequence":"first","affiliation":[{"name":"Key Laboratory of Earth Exploration and Information Techniques of Ministry of Education, Chengdu University of Technology, Chengdu 610059, China"},{"name":"College of Geophysics, Chengdu University of Technology, Chengdu 610059, China"}]},{"given":"Guangxue","family":"Wang","sequence":"additional","affiliation":[{"name":"Key Laboratory of Earth Exploration and Information Techniques of Ministry of Education, Chengdu University of Technology, Chengdu 610059, China"},{"name":"College of Geophysics, Chengdu University of Technology, Chengdu 610059, China"}]},{"given":"Jiayi","family":"Zong","sequence":"additional","affiliation":[{"name":"Key Laboratory of Earth Exploration and Information Techniques of Ministry of Education, Chengdu University of Technology, Chengdu 610059, China"},{"name":"College of Geophysics, Chengdu University of Technology, Chengdu 610059, China"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-6141-6171","authenticated-orcid":false,"given":"Yuanzheng","family":"Wen","sequence":"additional","affiliation":[{"name":"Key Laboratory of Earth Exploration and Information Techniques of Ministry of Education, Chengdu University of Technology, Chengdu 610059, China"},{"name":"College of Geophysics, Chengdu University of Technology, Chengdu 610059, China"}]},{"given":"Jinbin","family":"Cao","sequence":"additional","affiliation":[{"name":"School of Space and Environment, Beihang University, Beijing 100191, China"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-5808-7239","authenticated-orcid":false,"given":"Roberto","family":"Battiston","sequence":"additional","affiliation":[{"name":"Dipartimento di Fisica, Universit\u00e0 di Trento, 38123 Trento, Italy"},{"name":"Trento Institute for Fundamental Physics and Applications (TIFPA), National Institute for Nuclear Physics (INFN), 34136 Trento, Italy"}]},{"given":"Zhima","family":"Zeren","sequence":"additional","affiliation":[{"name":"National Institute of Natural Hazards, Ministry of Emergency Management of China, Beijing 100085, China"}]}],"member":"1968","published-online":{"date-parts":[[2022,5,5]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"677","DOI":"10.1038\/262677a0","article-title":"Frequency of foreshocks","volume":"262","author":"Jones","year":"1976","journal-title":"Nature"},{"key":"ref_2","doi-asserted-by":"crossref","first-page":"197","DOI":"10.1209\/0295-5075\/9\/3\/002","article-title":"Self-organized criticality and earthquakes","volume":"9","author":"Sornette","year":"1989","journal-title":"Europhys. 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