{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,25]],"date-time":"2026-09-25T14:04:20Z","timestamp":1790345060866,"version":"4.1.0"},"reference-count":68,"publisher":"American Geophysical Union (AGU)","issue":"17","license":[{"start":{"date-parts":[[2026,9,10]],"date-time":"2026-09-10T00:00:00Z","timestamp":1788998400000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0\/"},{"start":{"date-parts":[[2026,9,10]],"date-time":"2026-09-10T00:00:00Z","timestamp":1788998400000},"content-version":"tdm","delay-in-days":0,"URL":"http:\/\/doi.wiley.com\/10.1002\/tdm_license_1.1"}],"funder":[{"DOI":"10.13039\/501100001691","name":"Japan Society for the Promotion of Science","doi-asserted-by":"publisher","award":["JP22K21344"],"award-info":[{"award-number":["JP22K21344"]}],"id":[{"id":"10.13039\/501100001691","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100001691","name":"Japan Society for the Promotion of Science","doi-asserted-by":"publisher","award":["JP26KJ0001"],"award-info":[{"award-number":["JP26KJ0001"]}],"id":[{"id":"10.13039\/501100001691","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/100005156","name":"Alexander von Humboldt-Stiftung","doi-asserted-by":"publisher","id":[{"id":"10.13039\/100005156","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100001659","name":"Deutsche Forschungsgemeinschaft","doi-asserted-by":"publisher","award":["559317179"],"award-info":[{"award-number":["559317179"]}],"id":[{"id":"10.13039\/501100001659","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["agupubs.onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Geophysical Research Letters"],"published-print":{"date-parts":[[2026,9,16]]},"abstract":"<jats:title>Abstract<\/jats:title>\n                  <jats:p>Estimating Mercury's radial contraction is key to understanding the planet's geodynamic evolution. Contraction has been inferred from mapped shortening structures, whose heterogeneous distribution contradicts the isotropic contraction expected from global cooling. Here we investigate the possibility that the tectonic record is partly obscured by geologically recent resurfacing features like crater ejecta. Using topographic roughness as a proxy for surface freshness, we examine how roughness influences the mapped distribution of shortening structures. Our new global roughness map is compared to contractional strain maps derived from a shortening structures catalog. We find a lack of shortening structures in rough regions, suggesting that roughness\u2010related processes obscure pre\u2010existing structures, hindering their identification, and\/or inhibiting their formation. This obscuration effect biases previous contraction estimates downward by several kilometers, implying that Mercury's radial contraction is up to 30% larger than previously thought. This roughness bias may also be critical for other terrestrial bodies like the Moon.<\/jats:p>","DOI":"10.1029\/2026gl124067","type":"journal-article","created":{"date-parts":[[2026,9,10]],"date-time":"2026-09-10T13:00:34Z","timestamp":1789045234000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":1,"title":["Underestimation of Planetary Contraction Due To Obscuration by Surface Roughness: The Case of Mercury"],"prefix":"10.1029","volume":"53","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-6565-349X","authenticated-orcid":false,"given":"G.","family":"Nishiyama","sequence":"first","affiliation":[{"name":"Institute of Space Research German Aerospace Center (DLR)  Berlin Germany"},{"name":"Department of Cosmosciences Hokkaido University  Sapporo Japan"},{"name":"Department of Earth and Planetary Science The University of Tokyo  Tokyo Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-5153-303X","authenticated-orcid":false,"given":"A.","family":"Broquet","sequence":"additional","affiliation":[{"name":"Institute of Space Research German Aerospace Center (DLR)  Berlin Germany"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-4912-2848","authenticated-orcid":false,"given":"N.","family":"Tosi","sequence":"additional","affiliation":[{"name":"Institute of Space Research German Aerospace Center (DLR)  Berlin Germany"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-9005-4202","authenticated-orcid":false,"given":"F.","family":"Preusker","sequence":"additional","affiliation":[{"name":"Institute of Space Research German Aerospace Center (DLR)  Berlin Germany"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-9110-1138","authenticated-orcid":false,"given":"A.","family":"Stark","sequence":"additional","affiliation":[{"name":"Institute of Space Research German Aerospace Center (DLR)  Berlin Germany"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-3816-0232","authenticated-orcid":false,"given":"H.","family":"Hussmann","sequence":"additional","affiliation":[{"name":"Institute of Space Research German Aerospace Center (DLR)  Berlin Germany"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-1375-304X","authenticated-orcid":false,"given":"E.","family":"Hauber","sequence":"additional","affiliation":[{"name":"Institute of Space Research German Aerospace Center (DLR)  Berlin Germany"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"13","published-online":{"date-parts":[[2026,9,10]]},"reference":[{"key":"e_1_2_10_2_1","doi-asserted-by":"publisher","DOI":"10.1126\/science.1231753"},{"key":"e_1_2_10_3_1","first-page":"2959","volume-title":"47th Annual Lunar and Planetary Science Conference","author":"Becker K. 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