{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,2,7]],"date-time":"2026-02-07T19:33:44Z","timestamp":1770492824492,"version":"3.49.0"},"reference-count":65,"publisher":"MDPI AG","issue":"24","license":[{"start":{"date-parts":[[2021,12,10]],"date-time":"2021-12-10T00:00:00Z","timestamp":1639094400000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Remote Sensing"],"abstract":"<jats:p>Satellite altimetry is an efficient instrument for detection dynamical processes in the World Ocean, including reconstruction of geostrophic currents and tracking of mesoscale eddies. Satellite altimetry has the potential to detect large river plumes, which have reduced salinity and, therefore, elevated surface level as compared to surrounding saline sea. In this study, we analyze applicability of satellite altimetry for detection of the Ob\u2013Yenisei plume in the Kara Sea, which is among the largest river plumes in the World Ocean. Based on the extensive in situ data collected at the study area during oceanographic surveys in 2007\u20132019, we analyze the accuracy and efficiency of satellite altimetry in reproducing, first, the outer boundary of the plume and, second, the internal structure of the plume. We reveal that the value of positive level anomaly within the Ob\u2013Yenisei plume strongly depends on the vertical plume structure and is prone to significant synoptic and seasonal variability due to wind forcing and mixing of the plume with subjacent sea. As a result, despite generally high statistical correlation between the ADT and surface salinity, straightforward usage of ADT for detection of the river plume is incorrect and produces misleading results. Satellite altimetry could provide correct information about spatial extents and shape of the Ob\u2013Yenisei plume only if it is validated by synchronous in situ measurements.<\/jats:p>","DOI":"10.3390\/rs13245014","type":"journal-article","created":{"date-parts":[[2021,12,10]],"date-time":"2021-12-10T02:07:18Z","timestamp":1639102038000},"page":"5014","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":21,"title":["Large River Plumes Detection by Satellite Altimetry: Case Study of the Ob\u2013Yenisei Plume"],"prefix":"10.3390","volume":"13","author":[{"given":"Dmitry","family":"Frey","sequence":"first","affiliation":[{"name":"Shirshov Institute of Oceanology, Russian Academy of Sciences, Nakhimovskiy Prospect 36, 117997 Moscow, Russia"},{"name":"Marine Hydrophysical Institute of RAS, Kapitanskaya Ulitsa 2, 299011 Sevastopol, Russia"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-6659-0934","authenticated-orcid":false,"given":"Alexander","family":"Osadchiev","sequence":"additional","affiliation":[{"name":"Shirshov Institute of Oceanology, Russian Academy of Sciences, Nakhimovskiy Prospect 36, 117997 Moscow, Russia"},{"name":"Moscow Institute of Physics and Technology, Institutskiy Pereulok 9, 141701 Dolgoprudny, Russia"}]}],"member":"1968","published-online":{"date-parts":[[2021,12,10]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"192","DOI":"10.1007\/s12237-007-9001-z","article-title":"Temporal and spatial variability of freshwater plumes in a semi-enclosed estuarine\u2013bay system","volume":"31","author":"Ostrander","year":"2008","journal-title":"Estuaries Coasts"},{"key":"ref_2","doi-asserted-by":"crossref","first-page":"865","DOI":"10.5194\/os-10-863-2014","article-title":"Effects of bottom topography on dynamics of river discharges in tidal regions: Case study of twin plumes in Taiwan Strait","volume":"10","author":"Korotenko","year":"2014","journal-title":"Ocean Sci."},{"key":"ref_3","doi-asserted-by":"crossref","first-page":"41","DOI":"10.5194\/nhess-16-41-2016","article-title":"Transport and bottom accumulation of fine river sediments under typhoon conditions and associated submarine landslides: Case study of the Peinan River, Taiwan","volume":"16","author":"Osadchiev","year":"2016","journal-title":"Nat. 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