Item talk:Q265764
From geokb
{
"USGS Publications Warehouse": { "@context": "https://schema.org", "@type": "Article", "additionalType": "Journal Article", "name": "Sediment export by ice rafting from a coastal Polynya, Arctic Alaska, U.S.A.", "identifier": [ { "@type": "PropertyValue", "propertyID": "USGS Publications Warehouse IndexID", "value": "70243584", "url": "https://pubs.usgs.gov/publication/70243584" }, { "@type": "PropertyValue", "propertyID": "USGS Publications Warehouse Internal ID", "value": 70243584 }, { "@type": "PropertyValue", "propertyID": "DOI", "value": "10.2307/1551544", "url": "https://doi.org/10.2307/1551544" } ], "journal": { "@type": "Periodical", "name": "Arctic and Alpine Research", "volumeNumber": "25", "issueNumber": "2" }, "inLanguage": "en", "isPartOf": [ { "@type": "CreativeWorkSeries", "name": "Arctic and Alpine Research" } ], "datePublished": "1993", "dateModified": "2023-05-12", "abstract": "Strong offshore winds in early 1989 produced a shore polynya that reached along the entire north coast of Alaska and eastward beyond the mouth of the Mackenzie River in Canada. From January through April, this open water periodically exposed the shelf to sediment entrainment by suspension freezing. This process requires turbulence and supercooled water, which results in the formation of frazil and anchor ice. The resulting granular, sediment-laden ice was observed to extend over 100 km seaward of the outer continental shelf after having been advected offshore. It was sampled to determine sediment type and to quantify the particle load. The particle size was mainly silt and clay, with local admixtures of as much as 27% sand and coarser clasts. Melted ice samples contained from 31 to nearly 600 mg L-1 of sediment. Combining these data with over 400 km of shipboard and aerial observations, photographs, and computer analysis of a summer Landsat image, we estimated the sediment load per unit area of sea ice. Seaward of the shelf, in regions of dense pack ice, a conservatively estimated sediment load was over 289 t km-2. Using a westward summer drift rate of 3 cm s-1, the sediment transport through a 1-km-long north-south segment is 67,418 t during 3 mo. In terms of regional sediment dynamics (littoral transport estimated at 10,000 t during the same period) and sediment budget (continental denudation estimated at 10 t km-2 during the same period), this number is very significant. Benthic microfossils indicate that bottom sediment incorporated in the ice came from water depths ranging from the inner neritic seaward to 50 m. The large load of shelf-derived sediment observed seaward of the continental shelf indicates that ice entrainment and transport cause shelf erosion. Nothing is known about sediment release over the Arctic Ocean Basin from these pulses of dirty ice that are periodically introduced into the Transpolar Drift.", "description": "16 p.", "publisher": { "@type": "Organization", "name": "Taylor & Francis" }, "author": [ { "@type": "Person", "name": "Reimnitz, Erk", "givenName": "Erk", "familyName": "Reimnitz" }, { "@type": "Person", "name": "McCormick, Michael", "givenName": "Michael", "familyName": "McCormick" }, { "@type": "Person", "name": "McDougall-Reid, Kristin kris@usgs.gov", "givenName": "Kristin", "familyName": "McDougall-Reid", "email": "kris@usgs.gov", "identifier": { "@type": "PropertyValue", "propertyID": "ORCID", "value": "0000-0001-6026-0718", "url": "https://orcid.org/0000-0001-6026-0718" }, "affiliation": [ { "@type": "Organization", "name": "Geology, Minerals, Energy, and Geophysics Science Center", "url": "https://www.usgs.gov/centers/gmeg" } ] }, { "@type": "Person", "name": "Brouwers, Elisabeth M. brouwers@usgs.gov", "givenName": "Elisabeth M.", "familyName": "Brouwers", "email": "brouwers@usgs.gov", "affiliation": [ { "@type": "Organization", "name": "Office of Science Quality and Integrity", "url": "https://www.usgs.gov/office-of-science-quality-and-integrity" } ] } ], "spatialCoverage": [ { "@type": "Place", "additionalType": "country", "name": "United States", "url": "https://geonames.org/4074035" }, { "@type": "Place", "additionalType": "state", "name": "Alaska" }, { "@type": "Place", "additionalType": "unknown", "name": "Arctic Ocean" }, { "@type": "Place", "geo": [ { "@type": "GeoShape", "additionalProperty": { "@type": "PropertyValue", "name": "GeoJSON", "value": { "type": "FeatureCollection", "features": [ { "type": "Feature", "properties": {}, "geometry": { "coordinates": [ [ [ -166.1893628235785, 68.8510799545711 ], [ -165.7927784937305, 68.60302294479024 ], [ -163.59571757549665, 68.45306559682152 ], [ -162.10797619040798, 69.25615394607448 ], [ -157.08199600571925, 70.07554650332517 ], [ -151.61365855031693, 69.51002606358901 ], [ -148.49371558067688, 69.28203829095418 ], [ -146.08719200955667, 69.23274785479458 ], [ -142.86278578656948, 69.5068404646222 ], [ -140.99468181589384, 69.07584879432568 ], [ -141.0126515770738, 69.62138774277821 ], [ -140.17191729737542, 71.55828011520083 ], [ -142.89846249283258, 71.71808353148506 ], [ -158.7712581652307, 73.17888787382822 ], [ -166.19595621130796, 71.98411374590395 ], [ -168.2196648555574, 69.9431467369302 ], [ -166.1893628235785, 68.8510799545711 ] ] ], "type": "Polygon" } } ] } } }, { "@type": "GeoCoordinates", "latitude": 70.89096277434237, "longitude": -154.84547110096213 } ] } ] }, "OpenAlex": { "_id": "https://openalex.org/w2797450100", "abstract_inverted_index": { "Strong": [ 0 ], "offshore": [ 1 ], "winds": [ 2 ], "in": [ 3, 28 ], "early": [ 4 ], "1989": [ 5 ], "produced": [ 6 ], "a": [ 7 ], "shore": [ 8 ], "polynya": [ 9 ], "that": [ 10 ], "reached": [ 11 ], "along": [ 12 ], "the": [ 13, 22, 25 ], "entire": [ 14 ], "north": [ 15 ], "coast": [ 16 ], "of": [ 17, 24 ], "Alaska": [ 18 ], "and": [ 19 ], "eastward": [ 20 ], "beyond": [ 21 ], "mouth": [ 23 ], "Mackenzie": [ 26 ], "River": [ 27 ], "Canada.": [ 29 ], "From": [ 30 ], "January": [ 31 ], "through...": [ 32 ] }, "apc_list": null, "apc_paid": null, "authorships": [ { "author_position": "first", "author": { "id": "https://openalex.org/A5007270750", "display_name": "Erk Reimnitz", "orcid": null }, "institutions": [], "countries": [], "is_corresponding": false, "raw_author_name": "Erk Reimnitz", "raw_affiliation_strings": [], "affiliations": [] }, { "author_position": "middle", "author": { "id": "https://openalex.org/A5021303066", "display_name": "Michael McCormick", "orcid": "https://orcid.org/0000-0001-7964-9387" }, "institutions": [], "countries": [], "is_corresponding": false, "raw_author_name": "Michael McCormick", "raw_affiliation_strings": [], "affiliations": [] }, { "author_position": "middle", "author": { "id": "https://openalex.org/A5067795841", "display_name": "Kristin McDougall", "orcid": "https://orcid.org/0000-0002-8788-3664" }, "institutions": [], "countries": [], "is_corresponding": false, "raw_author_name": "Kristin McDougall", "raw_affiliation_strings": [], "affiliations": [] }, { "author_position": "last", "author": { "id": "https://openalex.org/A5048742797", "display_name": "Elisabeth M. 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