{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,6,30]],"date-time":"2026-06-30T18:16:21Z","timestamp":1782843381932,"version":"3.54.5"},"reference-count":46,"publisher":"MDPI AG","issue":"5","license":[{"start":{"date-parts":[[2018,5,7]],"date-time":"2018-05-07T00:00:00Z","timestamp":1525651200000},"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>Bottomfast sea ice is an integral part of many near-coastal Arctic ecosystems with implications for subsea permafrost, coastal stability and morphology. Bottomfast sea ice is also of great relevance to over-ice travel by coastal communities, industrial ice roads, and marine habitats. There are currently large uncertainties around where and how much bottomfast ice is present in the Arctic due to the lack of effective approaches for detecting bottomfast sea ice on large spatial scales. Here, we suggest a robust method capable of detecting bottomfast sea ice using spaceborne synthetic aperture radar interferometry. This approach is used to discriminate between slowly deforming floating ice and completely stationary bottomfast ice based on the interferometric phase. We validate the approach over freshwater ice in the Mackenzie Delta, Canada, and over sea ice in the Colville Delta and Elson Lagoon, Alaska. For these areas, bottomfast ice, as interpreted from the interferometric phase, shows high correlation with local bathymetry and in-situ ice auger and ground penetrating radar measurements. The technique is further used to track the seasonal evolution of bottomfast ice in the Kasegaluk Lagoon, Alaska, by identifying freeze-up progression and areas of liquid water throughout winter.<\/jats:p>","DOI":"10.3390\/rs10050720","type":"journal-article","created":{"date-parts":[[2018,5,8]],"date-time":"2018-05-08T02:48:08Z","timestamp":1525747688000},"page":"720","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":18,"title":["Mapping Arctic Bottomfast Sea Ice Using SAR Interferometry"],"prefix":"10.3390","volume":"10","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-5355-9516","authenticated-orcid":false,"given":"Dyre O.","family":"Dammann","sequence":"first","affiliation":[{"name":"Department of Space, Earth, and Environment, Chalmers University of Technology, H\u00f6rsalsv\u00e4gen 11, 412 96 Gothenburg, Sweden"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Leif E. B.","family":"Eriksson","sequence":"additional","affiliation":[{"name":"Department of Space, Earth, and Environment, Chalmers University of Technology, H\u00f6rsalsv\u00e4gen 11, 412 96 Gothenburg, Sweden"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Andrew R.","family":"Mahoney","sequence":"additional","affiliation":[{"name":"Geophysical Institute, University of Alaska Fairbanks, Fairbanks, Alaska, 2156 Koyukuk Drive, Fairbanks, AK 99775, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Christopher W.","family":"Stevens","sequence":"additional","affiliation":[{"name":"SRK Consulting (U.S.), Inc., 4700 Business Park Blvd, Anchorage, AK 99503, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-0407-2733","authenticated-orcid":false,"given":"Joost","family":"Van der Sanden","sequence":"additional","affiliation":[{"name":"Canada Centre for Mapping and Earth Observation, 560 Rochester St., Ottawa, ON K1A 0E4, Canada"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Hajo","family":"Eicken","sequence":"additional","affiliation":[{"name":"International Arctic Research Center, University of Alaska Fairbanks, Fairbanks, Alaska, 2160 Koyukuk Drive, Fairbanks, AK 99775, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Franz J.","family":"Meyer","sequence":"additional","affiliation":[{"name":"Geophysical Institute, University of Alaska Fairbanks, Fairbanks, Alaska, 2156 Koyukuk Drive, Fairbanks, AK 99775, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Craig E.","family":"Tweedie","sequence":"additional","affiliation":[{"name":"Department of Biological Sciences, University of Texas El Paso, 500 W University Ave, El Paso, TX 79968, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2018,5,7]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"119","DOI":"10.14430\/arctic126","article-title":"Sea-ice system services: A framework to help identify and meet information needs relevant for Arctic observing networks","volume":"62","author":"Eicken","year":"2009","journal-title":"Arctic"},{"key":"ref_2","doi-asserted-by":"crossref","first-page":"1005","DOI":"10.1007\/s10584-011-0101-1","article-title":"The Arctic\u2019s rapidly shrinking sea ice cover: A research synthesis","volume":"110","author":"Stroeve","year":"2012","journal-title":"Clim. Chang."},{"key":"ref_3","doi-asserted-by":"crossref","first-page":"389","DOI":"10.1002\/wcc.277","article-title":"Climate trends in the Arctic as observed from space","volume":"5","author":"Comiso","year":"2014","journal-title":"Wiley Interdiscip. Rev. Clim. Chang."},{"key":"ref_4","doi-asserted-by":"crossref","first-page":"185","DOI":"10.1002\/2013RG000431","article-title":"Arctic sea ice in transformation: A review of recent observed changes and impacts on biology and human activity","volume":"52","author":"Meier","year":"2014","journal-title":"Rev. Geophys."},{"key":"ref_5","doi-asserted-by":"crossref","first-page":"41","DOI":"10.1016\/j.coldregions.2014.03.003","article-title":"Landfast sea ice extent in the Chukchi and Beaufort Seas: The annual cycle and decadal variability","volume":"103","author":"Mahoney","year":"2014","journal-title":"Cold Reg. Sci. Technol."},{"key":"ref_6","doi-asserted-by":"crossref","first-page":"7791","DOI":"10.1002\/2015JC011135","article-title":"Seasonal and interannual variability of fast ice extent in the southeastern Laptev Sea between 1999 and 2013","volume":"120","author":"Selyuzhenok","year":"2015","journal-title":"J. Geophys. Res. Oceans"},{"key":"ref_7","doi-asserted-by":"crossref","first-page":"1334","DOI":"10.1038\/nature09051","article-title":"The central role of diminishing sea ice in recent Arctic temperature amplification","volume":"464","author":"Screen","year":"2010","journal-title":"Nature"},{"key":"ref_8","doi-asserted-by":"crossref","first-page":"519","DOI":"10.1126\/science.1235225","article-title":"Ecological consequences of sea-ice decline","volume":"341","author":"Post","year":"2013","journal-title":"Science"},{"key":"ref_9","unstructured":"Dammann, D.O. (2017). Arctic Sea Ice Trafficability\u2014New Strategies for a Changing Icescape. [Ph.D. Thesis, University of Alaska Fairbanks]."},{"key":"ref_10","unstructured":"Solomon, S.M., Taylor, A.E., and Stevens, C.W. (July, January 29). Nearshore ground temperatures, seasonal ice bonding, and permafrost formation within the bottom-fast ice zone, Mackenzie Delta, NWT. Proceedings of the Ninth International Conference on Permafrost, Fairbanks, AK, USA."},{"key":"ref_11","doi-asserted-by":"crossref","first-page":"256","DOI":"10.1002\/ppp.682","article-title":"Interannual changes in seasonal ground freezing and near-surface heat flow beneath bottom-fast ice in the near-shore zone, Mackenzie Delta, NWT, Canada","volume":"21","author":"Stevens","year":"2010","journal-title":"Permafr. Periglac. Process."},{"key":"ref_12","unstructured":"Stevens, C.W., Moorman, B.J., and Solomon, S.M. (July, January 29). Detection of frozen and unfrozen interfaces with ground penetrating radar in the nearshore zone of the Mackenzie Delta, Canada. Proceedings of the Ninth International Conference on Permafrost, Fairbanks, AK, USA."},{"key":"ref_13","unstructured":"Stevens, C.W. (2011). Controls on Seasonal Ground Freezing and Permafrost in the Near-Shore Zone of the Mackenzie Delta, NWT, Canada. [Ph.D. Thesis, University of Calgary]."},{"key":"ref_14","doi-asserted-by":"crossref","first-page":"55","DOI":"10.1016\/j.gloplacha.2004.12.005","article-title":"Zonation of the Laptev Sea landfast ice cover and its importance in a frozen estuary","volume":"48","author":"Eicken","year":"2005","journal-title":"Glob. Planet. Chang."},{"key":"ref_15","unstructured":"Are, F., and Reimnitz, E. (2000). An overview of the Lena River Delta setting: Geology, tectonics, geomorphology, and hydrology. J. Coast. Res., 1083\u20131093."},{"key":"ref_16","doi-asserted-by":"crossref","unstructured":"Leidersdorf, C.B., Hearon, G.E., Vaudrey, K.D., and Swank, G. (2007). Strudel scour formation off Arctic river deltas. Coastal Engineering 2006: (In 5 Volumes), World Scientific.","DOI":"10.1142\/9789812709554_0445"},{"key":"ref_17","doi-asserted-by":"crossref","first-page":"275","DOI":"10.1016\/j.coldregions.2010.10.015","article-title":"Mapping sea ice overflood using remote sensing: Alaskan Beaufort Sea","volume":"65","author":"Dickins","year":"2011","journal-title":"Cold Reg. Sci. Technol."},{"key":"ref_18","doi-asserted-by":"crossref","unstructured":"Lanan, G.A., Cowin, T., Hazen, B., Maguire, D.H., Hall, J.D., and Perry, C.J. (2008, January 5\u20138). Oooguruk offshore Arctic flowline design and construction. Proceedings of the Offshore Technology Conference, Houston, TX, USA.","DOI":"10.2118\/19353-MS"},{"key":"ref_19","unstructured":"Hearon, G., Dickins, D., and Ambrosius, K.K.M. (2009). Mapping Sea Ice Overflood Using Remote Sensing: Smith Bay to Camden Bay, University of Alaska for US Department of Interior. Report Prepared by DF Dickins Associates, Minerals Management Service, Alaska OCS Region under Contract M06PC00034."},{"key":"ref_20","first-page":"123","article-title":"Interaction of river discharge with sea ice in proximity of Arctic deltas: A review","volume":"70","author":"Reimnitz","year":"2002","journal-title":"Polarforschung"},{"key":"ref_21","doi-asserted-by":"crossref","first-page":"285","DOI":"10.1111\/j.1752-1688.2007.00161.x","article-title":"Bottomfast ice mapping and the measurement of ice thickness on tundra lakes using c-band synthetic aperture radar remote sensing","volume":"44","author":"Hirose","year":"2008","journal-title":"J. Am. Water Resour. Assoc."},{"key":"ref_22","unstructured":"Hall, J. (Offshore Magazine, 2008). Oooguruk project offshore Alaska, Offshore Magazine."},{"key":"ref_23","doi-asserted-by":"crossref","first-page":"660","DOI":"10.1016\/j.rse.2018.02.022","article-title":"Analyzing floating and bedfast lake ice regimes across Arctic Alaska using 25 years of space-borne SAR imagery","volume":"209","author":"Engram","year":"2018","journal-title":"Remote Sens. Environ."},{"key":"ref_24","doi-asserted-by":"crossref","first-page":"22459","DOI":"10.1029\/94JC01479","article-title":"Structural and stratigraphie features and ERS 1 synthetic aperture radar backscatter characteristics of ice growing on shallow lakes in NW Alaska, winter 1991\u20131992","volume":"99","author":"Jeffries","year":"1994","journal-title":"J. Geophys. Res. Oceans"},{"key":"ref_25","doi-asserted-by":"crossref","unstructured":"Hallikainen, M., and Winebrenner, D.P. (1992). The physical basis for sea ice remote sensing. Microw. Remote Sens. Sea Ice, 29\u201346.","DOI":"10.1029\/GM068p0029"},{"key":"ref_26","unstructured":"Pegau, W.S., Garron, J., and Zabilansky, L. (2016). Tabulation of first-year sea-ice properties representative of the annual cycle as relevant to 2014 oil-in-ice experiments project. Detection of Oil on-in-and-under Ice\u2014Final Report 5.3, Arctic Response Technology."},{"key":"ref_27","doi-asserted-by":"crossref","first-page":"341","DOI":"10.5589\/m13-042","article-title":"Bottom-fast ice delineation with polsar and insar techniques in the Mackenzie Delta Region, Northwest Territories, Canada","volume":"39","author":"Yue","year":"2013","journal-title":"Can. J. Remote Sens."},{"key":"ref_28","doi-asserted-by":"crossref","first-page":"492","DOI":"10.1016\/j.rse.2016.10.032","article-title":"Assessing small-scale deformation and stability of landfast sea ice on seasonal timescales through l-band SAR interferometry and inverse modeling","volume":"187","author":"Dammann","year":"2016","journal-title":"Remote Sens. Environ."},{"key":"ref_29","doi-asserted-by":"crossref","first-page":"1248","DOI":"10.1109\/TGRS.2014.2336752","article-title":"X-band interferometric SAR observations of Baltic fast ice","volume":"53","author":"Berg","year":"2015","journal-title":"IEEE Trans. Geosci. Remote Sens."},{"key":"ref_30","first-page":"67","article-title":"Application of satellite radar interferometry to the detection of sea ice deformation","volume":"16","author":"Li","year":"1996","journal-title":"J. Remote Sens. Soc. Jpn."},{"key":"ref_31","doi-asserted-by":"crossref","first-page":"3029","DOI":"10.1016\/j.rse.2011.06.006","article-title":"Mapping Arctic landfast ice extent using l-band synthetic aperture radar interferometry","volume":"115","author":"Meyer","year":"2011","journal-title":"Remote Sens. Environ."},{"key":"ref_32","doi-asserted-by":"crossref","first-page":"950","DOI":"10.1109\/36.175330","article-title":"Decorrelation in interferometric radar echoes","volume":"30","author":"Zebker","year":"1992","journal-title":"IEEE Trans. Geosci. Remote Sens."},{"key":"ref_33","doi-asserted-by":"crossref","first-page":"26","DOI":"10.1134\/S0097807809010035","article-title":"Hydrological processes at an Arctic river mouth: Case study of the Colville River, Alaska, USA","volume":"36","author":"Mikhailova","year":"2009","journal-title":"Water Resour."},{"key":"ref_34","first-page":"40","article-title":"Insar principles-guidelines for SAR interferometry processing and interpretation","volume":"TM-19","author":"Ferretti","year":"2007","journal-title":"ESA Publ."},{"key":"ref_35","doi-asserted-by":"crossref","first-page":"R1","DOI":"10.1088\/0266-5611\/14\/4\/001","article-title":"Synthetic aperture radar interferometry","volume":"14","author":"Bamler","year":"1998","journal-title":"Inverse Probl."},{"key":"ref_36","unstructured":"Eicken, H., Gradinger, R., Salganek, M., Shirasawa, K., Perovich, D., and Lepp\u00e4ranta, M. (2009). Ice thickness and roughness measurements. Field Techniques for Sea Ice Research, University of Alaska Press."},{"key":"ref_37","doi-asserted-by":"crossref","first-page":"30","DOI":"10.1016\/j.coldregions.2008.09.005","article-title":"Mapping subsurface conditions within the near-shore zone of an Arctic delta using ground penetrating radar","volume":"56","author":"Stevens","year":"2009","journal-title":"Cold. Reg. Sci. Technol."},{"key":"ref_38","doi-asserted-by":"crossref","first-page":"59","DOI":"10.14430\/arctic4701","article-title":"Assessing sea ice trafficability in a changing Arctic","volume":"71","author":"Dammann","year":"2018","journal-title":"Arctic"},{"key":"ref_39","doi-asserted-by":"crossref","first-page":"1170","DOI":"10.3189\/S0022143000017676","article-title":"Growth rate of sea ice","volume":"3","author":"Anderson","year":"1961","journal-title":"J. Glaciol."},{"key":"ref_40","first-page":"23","article-title":"Growth, structure and properties of sea ice","volume":"Volume 2","author":"Thomas","year":"2010","journal-title":"Sea Ice"},{"key":"ref_41","doi-asserted-by":"crossref","first-page":"474","DOI":"10.1029\/WR009i002p00474","article-title":"Spring discharge of an Arctic river determined from salinity measurements beneath sea ice","volume":"9","author":"Walker","year":"1973","journal-title":"Water Resour. Res."},{"key":"ref_42","unstructured":"Tweedie, C.E., Escarzaga, S., Manley, W.F., Tarin, G., and Gaylord, A. (2018, May 07). Interpolated Bathymetric Surface for the Elson Lagoon, Barrow, Northern Alaska, 2015. Available online: http:\/\/barrowmapped.org."},{"key":"ref_43","doi-asserted-by":"crossref","first-page":"465","DOI":"10.1080\/15230430.2002.12003518","article-title":"Sediment inclusions in Alaskan coastal sea ice: Spatial distribution, interannual variability, and entrainment requirements","volume":"34","author":"Stierle","year":"2002","journal-title":"Arct. Antarct. Alp. Res."},{"key":"ref_44","doi-asserted-by":"crossref","first-page":"8741","DOI":"10.1029\/96JB00104","article-title":"A global, self-consistent, hierarchical, high-resolution shoreline database","volume":"101","author":"Wessel","year":"1996","journal-title":"J. Geophys. Res. Solid Earth"},{"key":"ref_45","unstructured":"Frost, K., Lowry, L., and Carroll, G. (1992). Use of Kasegaluk Lagoon, Chukchi Sea, Alaska, by Marine Birds and Mammals, III: Marine Mammals."},{"key":"ref_46","doi-asserted-by":"crossref","unstructured":"Overduin, P.P., Westermann, S., Yoshikawa, K., Haberlau, T., Romanovsky, V., and Wetterich, S. (2012). Geoelectric observations of the degradation of nearshore submarine permafrost at Barrow (Alaskan Beaufort Sea). J. Geophys. Res. Earth Surf., 117.","DOI":"10.1029\/2011JF002088"}],"container-title":["Remote Sensing"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/www.mdpi.com\/2072-4292\/10\/5\/720\/pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,10,11]],"date-time":"2025-10-11T15:03:37Z","timestamp":1760195017000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.mdpi.com\/2072-4292\/10\/5\/720"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2018,5,7]]},"references-count":46,"journal-issue":{"issue":"5","published-online":{"date-parts":[[2018,5]]}},"alternative-id":["rs10050720"],"URL":"https:\/\/doi.org\/10.3390\/rs10050720","relation":{},"ISSN":["2072-4292"],"issn-type":[{"value":"2072-4292","type":"electronic"}],"subject":[],"published":{"date-parts":[[2018,5,7]]}}}