FRINK Linked Data Fragments server

Matches in SemOpenAlex for { <https://semopenalex.org/work/W4220976807> ?p ?o ?g. }

• W4220976807 abstract "&lt;p&gt;Ice cliffs are important contributors to the mass balance of debris-covered glaciers, especially in High Mountain Asia where they can account for one sixth of the melt of&amp;#160; debris-covered glacier tongues, despite covering less than 10% of their area. These features have been shown to evolve, appear and disappear rapidly from year to year, with high variability in relative area and number. It has been hypothesized that ice cliffs expand and melt more rapidly during the monsoon (June-September), but there are very few observations during this period. Here, we use arrays of time-lapse cameras to reconstruct the geometry of four ice cliffs at a weekly timestep over a period of four to six months at two monsoon-affected sites: Langtang Glacier in Nepal, and 24K Glacier in South-Eastern Tibet. We use Structure-from-Motion photogrammetry to derive point clouds and Digital Elevation Models (DEMs) of the glacier surface, using the stable background terrain to constrain viewing geometries and DEM errors. This technique (time-lapse photogrammetry) enables a high accuracy, quantitative measurement of processes occurring at the cliff-scale (elevation uncertainties stay below 30cm at a distance of 300m from the cameras) and at high temporal resolution over the monsoon season, when dense cloud cover and intense precipitation prevent field- or satellite-based observations. We derive the melt patterns of these cliffs from the differencing of the weekly DEMs by accounting for glacier flow. We compare the observed melt patterns with the modeled energy-balance at the cliff surface and use these observations to quantify the influence of debris slumping and redistribution, as well as supraglacial ponds and streams on the melt patterns of these cliffs. The results highlight the seasonal variations of cliff melt, which occurs at up to 8 cm/day during the monsoon, twice as high as observed in the pre- and post-monsoon period. Our energy-balance results indicate that melt rates are driven by incoming long- and shortwave radiation, and are thus highly dependent on the cliff slope and aspect, as substantiated by our photogrammetric measurements. The observations also demonstrate the competitive influence of debris, which progressively reburies the cliff by accumulating at its surface, and supraglacial streams and ponds, which maintain the cliff slope by preventing debris accumulation at the base. These results will help in understanding the surface evolution of debris-covered glaciers and enable a better representation of ice cliff melt and evolution in glacio-hydrological models.&lt;/p&gt;" @default.
• W4220976807 created "2022-04-03" @default.
• W4220976807 creator A5002090716 @default.
• W4220976807 creator A5003069485 @default.
• W4220976807 creator A5018273827 @default.
• W4220976807 creator A5026573668 @default.
• W4220976807 creator A5040884723 @default.
• W4220976807 creator A5051429392 @default.
• W4220976807 creator A5052568377 @default.
• W4220976807 creator A5054630402 @default.
• W4220976807 creator A5058474186 @default.
• W4220976807 creator A5087507992 @default.
• W4220976807 creator A5088529000 @default.
• W4220976807 date "2022-03-27" @default.
• W4220976807 modified "2023-10-14" @default.
• W4220976807 title "Sub-seasonal evolution of ice cliffs captured with time-lapse photogrammetry" @default.
• W4220976807 doi "https://doi.org/10.5194/egusphere-egu22-6163" @default.
• W4220976807 hasPublicationYear "2022" @default.
• W4220976807 type Work @default.
• W4220976807 citedByCount "0" @default.
• W4220976807 crossrefType "posted-content" @default.
• W4220976807 hasAuthorship W4220976807A5002090716 @default.
• W4220976807 hasAuthorship W4220976807A5003069485 @default.
• W4220976807 hasAuthorship W4220976807A5018273827 @default.
• W4220976807 hasAuthorship W4220976807A5026573668 @default.
• W4220976807 hasAuthorship W4220976807A5040884723 @default.
• W4220976807 hasAuthorship W4220976807A5051429392 @default.
• W4220976807 hasAuthorship W4220976807A5052568377 @default.
• W4220976807 hasAuthorship W4220976807A5054630402 @default.
• W4220976807 hasAuthorship W4220976807A5058474186 @default.
• W4220976807 hasAuthorship W4220976807A5087507992 @default.
• W4220976807 hasAuthorship W4220976807A5088529000 @default.
• W4220976807 hasConcept C100834320 @default.
• W4220976807 hasConcept C100970517 @default.
• W4220976807 hasConcept C104932425 @default.
• W4220976807 hasConcept C114793014 @default.
• W4220976807 hasConcept C117455697 @default.
• W4220976807 hasConcept C127045886 @default.
• W4220976807 hasConcept C127313418 @default.
• W4220976807 hasConcept C136894858 @default.
• W4220976807 hasConcept C151730666 @default.
• W4220976807 hasConcept C161840515 @default.
• W4220976807 hasConcept C164139821 @default.
• W4220976807 hasConcept C181843262 @default.
• W4220976807 hasConcept C197435368 @default.
• W4220976807 hasConcept C205649164 @default.
• W4220976807 hasConcept C2524010 @default.
• W4220976807 hasConcept C33923547 @default.
• W4220976807 hasConcept C37054046 @default.
• W4220976807 hasConcept C49204034 @default.
• W4220976807 hasConcept C58640448 @default.
• W4220976807 hasConcept C62649853 @default.
• W4220976807 hasConcept C81820708 @default.
• W4220976807 hasConceptScore W4220976807C100834320 @default.
• W4220976807 hasConceptScore W4220976807C100970517 @default.
• W4220976807 hasConceptScore W4220976807C104932425 @default.
• W4220976807 hasConceptScore W4220976807C114793014 @default.
• W4220976807 hasConceptScore W4220976807C117455697 @default.
• W4220976807 hasConceptScore W4220976807C127045886 @default.
• W4220976807 hasConceptScore W4220976807C127313418 @default.
• W4220976807 hasConceptScore W4220976807C136894858 @default.
• W4220976807 hasConceptScore W4220976807C151730666 @default.
• W4220976807 hasConceptScore W4220976807C161840515 @default.
• W4220976807 hasConceptScore W4220976807C164139821 @default.
• W4220976807 hasConceptScore W4220976807C181843262 @default.
• W4220976807 hasConceptScore W4220976807C197435368 @default.
• W4220976807 hasConceptScore W4220976807C205649164 @default.
• W4220976807 hasConceptScore W4220976807C2524010 @default.
• W4220976807 hasConceptScore W4220976807C33923547 @default.
• W4220976807 hasConceptScore W4220976807C37054046 @default.
• W4220976807 hasConceptScore W4220976807C49204034 @default.
• W4220976807 hasConceptScore W4220976807C58640448 @default.
• W4220976807 hasConceptScore W4220976807C62649853 @default.
• W4220976807 hasConceptScore W4220976807C81820708 @default.
• W4220976807 hasLocation W42209768071 @default.
• W4220976807 hasOpenAccess W4220976807 @default.
• W4220976807 hasPrimaryLocation W42209768071 @default.
• W4220976807 hasRelatedWork W2020523539 @default.
• W4220976807 hasRelatedWork W2050388805 @default.
• W4220976807 hasRelatedWork W2328330382 @default.
• W4220976807 hasRelatedWork W2330514008 @default.
• W4220976807 hasRelatedWork W2386112654 @default.
• W4220976807 hasRelatedWork W2465126991 @default.
• W4220976807 hasRelatedWork W2603565796 @default.
• W4220976807 hasRelatedWork W2945727386 @default.
• W4220976807 hasRelatedWork W4206684996 @default.
• W4220976807 hasRelatedWork W4220976807 @default.
• W4220976807 isParatext "false" @default.
• W4220976807 isRetracted "false" @default.
• W4220976807 workType "article" @default.