FRINK Linked Data Fragments server

Matches in SemOpenAlex for { <https://semopenalex.org/work/W4324144939> ?p ?o ?g. }

• W4324144939 abstract "On the surface of the Greenland Ice Sheet, the presence of low-albedo features greatly contributes to ablation zone meltwater production. Some of the lowest albedo features on the Ice Sheet are water-filled supraglacial stream channels, especially those with abundant deposits of consolidated cryoconite sediment. Because these sediments enhance melting by disproportionately lowering albedo, studying their spatial extent can provide a better understanding of Greenland’s contribution to global sea level rise. However, little is known about the spatial distribution of supraglacial stream sediment, or how it changes in response to seasonal flow regimes. Here, we surveyed a supraglacial stream network in Southwest Greenland, collecting imagery from seven uncrewed aerial vehicle (UAV) flights over the course of 24 days in 2019. Using Structure-from-Motion-generated orthomosaic imagery and digital elevation models (DEMs), we manually digitized the banks of the supraglacial stream channels, classified the areal coverage of sediment deposits, and modeled how the terrain influences the amount of incoming solar radiation at the Ice Sheet surface. We used imagery classified by surface types and in-situ spectrometer measurements to determine how changes in sediment cover altered albedo. We found that, within our study area, only 15% of cryoconite sediment was consolidated in cryoconite holes; the remaining 85% was located within supraglacial streams mostly concentrated on daily inundated riverbanks (hereafter termed floodplains). Sediment cover and stream width are highly correlated, suggesting that sediment influx into supraglacial drainage systems widens stream channels or darkens previously widened channels. This reduces albedo in floodplains that already receive greater solar radiation due to their flatness. Additionally, the areal extent of stream sediments increased in August following seasonal peak flow, suggesting that as stream power decreases, more sediment accumulates in supraglacial channels. This negative feedback loop for melting may delay Greenland’s runoff to the latter end of the melt season. This study shows in unprecedented detail where and when sediment is deposited and how these deposits potentially impact the Ice Sheet surface energy balance. These findings may allow for better prediction of how supraglacial floodplains, and the microbiomes they contain, might change in response to increased melting." @default.
• W4324144939 created "2023-03-15" @default.
• W4324144939 creator A5039801614 @default.
• W4324144939 creator A5050482527 @default.
• W4324144939 creator A5054747934 @default.
• W4324144939 creator A5083540143 @default.
• W4324144939 creator A5090495213 @default.
• W4324144939 date "2023-03-14" @default.
• W4324144939 modified "2023-09-29" @default.
• W4324144939 title "Intra-seasonal variability in supraglacial stream sediment on the Greenland Ice Sheet" @default.
• W4324144939 cites W1483252178 @default.
• W4324144939 cites W1592271911 @default.
• W4324144939 cites W1848503042 @default.
• W4324144939 cites W1969282051 @default.
• W4324144939 cites W1984752020 @default.
• W4324144939 cites W1988201156 @default.
• W4324144939 cites W1989494938 @default.
• W4324144939 cites W2009254779 @default.
• W4324144939 cites W2021217022 @default.
• W4324144939 cites W2024870489 @default.
• W4324144939 cites W2037049417 @default.
• W4324144939 cites W2038031218 @default.
• W4324144939 cites W2045646640 @default.
• W4324144939 cites W2046639117 @default.
• W4324144939 cites W2053216985 @default.
• W4324144939 cites W2054626887 @default.
• W4324144939 cites W2056039982 @default.
• W4324144939 cites W2058105122 @default.
• W4324144939 cites W2060566603 @default.
• W4324144939 cites W2060706280 @default.
• W4324144939 cites W2066073444 @default.
• W4324144939 cites W2069581465 @default.
• W4324144939 cites W2092990959 @default.
• W4324144939 cites W2096533406 @default.
• W4324144939 cites W2106711354 @default.
• W4324144939 cites W2109489962 @default.
• W4324144939 cites W2113933496 @default.
• W4324144939 cites W2128161271 @default.
• W4324144939 cites W2130222370 @default.
• W4324144939 cites W2138963913 @default.
• W4324144939 cites W2154238011 @default.
• W4324144939 cites W2162366278 @default.
• W4324144939 cites W2167528619 @default.
• W4324144939 cites W2170338824 @default.
• W4324144939 cites W2398136055 @default.
• W4324144939 cites W2410359628 @default.
• W4324144939 cites W2438840671 @default.
• W4324144939 cites W2515331930 @default.
• W4324144939 cites W2544504283 @default.
• W4324144939 cites W2545715135 @default.
• W4324144939 cites W2552895678 @default.
• W4324144939 cites W2565121586 @default.
• W4324144939 cites W2607405708 @default.
• W4324144939 cites W2745898570 @default.
• W4324144939 cites W2766534645 @default.
• W4324144939 cites W2768016555 @default.
• W4324144939 cites W2771769724 @default.
• W4324144939 cites W2790247995 @default.
• W4324144939 cites W2790420145 @default.
• W4324144939 cites W2794043980 @default.
• W4324144939 cites W2884548906 @default.
• W4324144939 cites W2885496993 @default.
• W4324144939 cites W2892114488 @default.
• W4324144939 cites W2898269481 @default.
• W4324144939 cites W2899717777 @default.
• W4324144939 cites W2900903879 @default.
• W4324144939 cites W2905643058 @default.
• W4324144939 cites W2919064629 @default.
• W4324144939 cites W2938442499 @default.
• W4324144939 cites W2948022870 @default.
• W4324144939 cites W2950147434 @default.
• W4324144939 cites W2960774796 @default.
• W4324144939 cites W2979303727 @default.
• W4324144939 cites W2985831570 @default.
• W4324144939 cites W2991298899 @default.
• W4324144939 cites W2995568124 @default.
• W4324144939 cites W2996390166 @default.
• W4324144939 cites W3037716351 @default.
• W4324144939 cites W3047779046 @default.
• W4324144939 cites W3102518714 @default.
• W4324144939 cites W3107187421 @default.
• W4324144939 cites W3112133509 @default.
• W4324144939 cites W3142868404 @default.
• W4324144939 cites W3146876253 @default.
• W4324144939 cites W3158009489 @default.
• W4324144939 cites W3160194082 @default.
• W4324144939 cites W3179947774 @default.
• W4324144939 cites W3187551954 @default.
• W4324144939 cites W3187885602 @default.
• W4324144939 cites W3191704906 @default.
• W4324144939 cites W3195619486 @default.
• W4324144939 cites W3199056033 @default.
• W4324144939 cites W4282838188 @default.
• W4324144939 doi "https://doi.org/10.3389/feart.2023.969629" @default.
• W4324144939 hasPublicationYear "2023" @default.
• W4324144939 type Work @default.
• W4324144939 citedByCount "0" @default.
• W4324144939 crossrefType "journal-article" @default.
• W4324144939 hasAuthorship W4324144939A5039801614 @default.
• W4324144939 hasAuthorship W4324144939A5050482527 @default.

• next