Item talk:Q271175
From geokb
{
"USGS Publications Warehouse": { "@context": "https://schema.org", "@type": "Article", "additionalType": "Journal Article", "name": "Dropstones in lacustrine sediments as a record of snow avalanches - A validation of the proxy by combining satellite imagery and varve chronology at Kenai Lake (south-central Alaska)", "identifier": [ { "@type": "PropertyValue", "propertyID": "USGS Publications Warehouse IndexID", "value": "70217591", "url": "https://pubs.usgs.gov/publication/70217591" }, { "@type": "PropertyValue", "propertyID": "USGS Publications Warehouse Internal ID", "value": 70217591 }, { "@type": "PropertyValue", "propertyID": "DOI", "value": "10.3390/quat2010011", "url": "https://doi.org/10.3390/quat2010011" } ], "journal": { "@type": "Periodical", "name": "Quaternary Geochronology", "volumeNumber": "2", "issueNumber": "1" }, "inLanguage": "en", "isPartOf": [ { "@type": "CreativeWorkSeries", "name": "Quaternary Geochronology" } ], "datePublished": "2019", "dateModified": "2023-11-03", "abstract": "Snow avalanches cause many fatalities every year and damage local economies worldwide. The present-day climate change affects the snowpack and, thus, the properties and frequency of snow avalanches. Reconstructing snow avalanche records can help us understand past variations in avalanche frequency and their relationship to climate change. Previous avalanche records have primarily been reconstructed using dendrochronology. Here, we investigate the potential of lake sediments to record snow avalanches by studying 27 < 30-cm-long sediment cores from Kenai Lake, south-central Alaska. We use X-ray computed tomography (CT) to image post-1964 varves and to identify dropstones. We use two newly identified cryptotephras to update the existing varve chronology. Satellite imagery is used to understand the redistribution of sediments by ice floes over the lake, which helps to explain why some avalanches are not recorded. Finally, we compare the dropstone record with climate data to show that snow avalanche activity is related to high amounts of snowfall in periods of relatively warm or variable temperature conditions. We show, for the first time, a direct link between historical snow avalanches and dropstones preserved in lake sediments. Although the lacustrine varve record does not allow for the development of a complete annual reconstruction of the snow avalanche history in the Kenai Lake valley, our results suggest that it can be used for long-term decadal reconstructions of the snow-avalanche history, ideally in combination with similar records from lakes elsewhere in the region.", "description": "11, 19 p.", "publisher": { "@type": "Organization", "name": "MDPI" }, "author": [ { "@type": "Person", "name": "Van Daele, Maarten", "givenName": "Maarten", "familyName": "Van Daele", "identifier": { "@type": "PropertyValue", "propertyID": "ORCID", "value": "0000-0002-8530-4438", "url": "https://orcid.org/0000-0002-8530-4438" }, "affiliation": [ { "@type": "Organization", "name": "Department of Geology and Soil Science, Ghent University, Ghent, Belgium" } ] }, { "@type": "Person", "name": "Praet, Nore", "givenName": "Nore", "familyName": "Praet" }, { "@type": "Person", "name": "Jensen, Britta J.L.", "givenName": "Britta J.L.", "familyName": "Jensen", "identifier": { "@type": "PropertyValue", "propertyID": "ORCID", "value": "0000-0001-9134-7170", "url": "https://orcid.org/0000-0001-9134-7170" }, "affiliation": [ { "@type": "Organization", "name": "University of Alberta" } ] }, { "@type": "Person", "name": "Van Dyck, Thomas", "givenName": "Thomas", "familyName": "Van Dyck", "affiliation": [ { "@type": "Organization", "name": "Ghent University" } ] }, { "@type": "Person", "name": "Haeussler, Peter J.", "givenName": "Peter J.", "familyName": "Haeussler", "identifier": { "@type": "PropertyValue", "propertyID": "ORCID", "value": "0000-0002-1503-6247", "url": "https://orcid.org/0000-0002-1503-6247" }, "affiliation": [ { "@type": "Organization", "name": "Alaska Science Center Geology Minerals", "url": "https://www.usgs.gov/centers/alaska-science-center" }, { "@type": "Organization", "name": "Alaska Science Center", "url": "https://www.usgs.gov/centers/alaska-science-center" } ] }, { "@type": "Person", "name": "Vandekerkhove, Elke", "givenName": "Elke", "familyName": "Vandekerkhove", "identifier": { "@type": "PropertyValue", "propertyID": "ORCID", "value": "0000-0002-6184-2709", "url": "https://orcid.org/0000-0002-6184-2709" }, "affiliation": [ { "@type": "Organization", "name": "Ghent University" } ] }, { "@type": "Person", "name": "Cnudde, Veerle", "givenName": "Veerle", "familyName": "Cnudde", "affiliation": [ { "@type": "Organization", "name": "Ghent University" } ] }, { "@type": "Person", "name": "De Batist, Marc", "givenName": "Marc", "familyName": "De Batist", "identifier": { "@type": "PropertyValue", "propertyID": "ORCID", "value": "0000-0002-1625-2080", "url": "https://orcid.org/0000-0002-1625-2080" } }, { "@type": "Person", "name": "Thys, Sien", "givenName": "Sien", "familyName": "Thys", "affiliation": [ { "@type": "Organization", "name": "Ghent University" } ] } ], "funder": [ { "@type": "Organization", "name": "Alaska Science Center Geology Minerals", "url": 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