FRINK Linked Data Fragments server

Matches in SemOpenAlex for { <https://semopenalex.org/work/W2314400439> ?p ?o ?g. }

• W2314400439 abstract "Disturbed lunar regolith has distinctly different photometric properties than undisturbed regolith. Properties such as composition, grain size and size distribution, grain shapes, glass and Fe 0 contents, and structure (fine-scale layering or “fairy-castle” forms) determine how light is reflected from the surface. Photometry can be used to extract this information from regions with different photometric behavior or to compare disturbed and undisturbed areas. Of interest here are regions around the Apollo landers that were disturbed during descent, which we refer to as blast zones. Lunar Reconnaissance Orbiter Camera (LROC) Narrow Angle Camera (NAC) images show that the blast zones are brighter and have distinctly different photometric properties than surrounding regolith, presumably owing to smoothing of the surface and/or removal/redistribution of fine particles. We use phase-ratio images for each landing site to determine the size of the blast zone around each lander and to quantify the differences in reflectance within the blast zones in comparison to nearby undisturbed regolith. Most of the blast zones are elliptical in shape, but some are irregular. The average area of regolith brightening from preliminary measurements for the blast zones is ~115,000 m 2 , with values ranging from as low as 75,000 m 2 for Apollo 15 (~150 m average diameter) to as high as 215,000 m 2 (~260 m average diameter) for Apollo 12, which has an enlarged disturbed region extending in the direction of Surveyor Crater. The average normalized reflectance is 0.0480 for the blast zone, 0.0400 for the area under the LM, and 0.0443 for areas outside the blast zone, indicating some process or combination of processes are causing differences in surface properties of the regolith. Whereas experimental work and dynamical modeling indicate that soil grains excavated from beneath the landers would have been transported and deposited many kilometers away, the images provide visible evidence for effects in close proximity to the landers. We are investigating what part of the excavated particle flow regime corresponds to these areas of visible alteration using Hapke modeling. Our working hypothesis is that surface brightening results from scouring and smoothing by exhaust gases, and exposure of fresh regolith material." @default.
• W2314400439 created "2016-06-24" @default.
• W2314400439 creator A5015945464 @default.
• W2314400439 creator A5073471906 @default.
• W2314400439 creator A5091417107 @default.
• W2314400439 date "2012-04-17" @default.
• W2314400439 modified "2023-09-23" @default.
• W2314400439 title "Photometric Analysis of the Apollo Landing Sites" @default.
• W2314400439 cites W1669655639 @default.
• W2314400439 cites W1994143949 @default.
• W2314400439 cites W1996421492 @default.
• W2314400439 cites W2009960353 @default.
• W2314400439 cites W2024063609 @default.
• W2314400439 cites W2027847066 @default.
• W2314400439 cites W2044098891 @default.
• W2314400439 cites W2078222544 @default.
• W2314400439 cites W2081231077 @default.
• W2314400439 cites W2499487547 @default.
• W2314400439 cites W3168200146 @default.
• W2314400439 doi "https://doi.org/10.1061/9780784412190.025" @default.
• W2314400439 hasPublicationYear "2012" @default.
• W2314400439 type Work @default.
• W2314400439 sameAs 2314400439 @default.
• W2314400439 citedByCount "1" @default.
• W2314400439 countsByYear W23144004392013 @default.
• W2314400439 crossrefType "proceedings-article" @default.
• W2314400439 hasAuthorship W2314400439A5015945464 @default.
• W2314400439 hasAuthorship W2314400439A5073471906 @default.
• W2314400439 hasAuthorship W2314400439A5091417107 @default.
• W2314400439 hasConcept C121332964 @default.
• W2314400439 hasConcept C127313418 @default.
• W2314400439 hasConcept C152067771 @default.
• W2314400439 hasConcept C2779821442 @default.
• W2314400439 hasConcept C39432304 @default.
• W2314400439 hasConcept C41008148 @default.
• W2314400439 hasConcept C62649853 @default.
• W2314400439 hasConcept C86803240 @default.
• W2314400439 hasConcept C87355193 @default.
• W2314400439 hasConcept C90856448 @default.
• W2314400439 hasConceptScore W2314400439C121332964 @default.
• W2314400439 hasConceptScore W2314400439C127313418 @default.
• W2314400439 hasConceptScore W2314400439C152067771 @default.
• W2314400439 hasConceptScore W2314400439C2779821442 @default.
• W2314400439 hasConceptScore W2314400439C39432304 @default.
• W2314400439 hasConceptScore W2314400439C41008148 @default.
• W2314400439 hasConceptScore W2314400439C62649853 @default.
• W2314400439 hasConceptScore W2314400439C86803240 @default.
• W2314400439 hasConceptScore W2314400439C87355193 @default.
• W2314400439 hasConceptScore W2314400439C90856448 @default.
• W2314400439 hasLocation W23144004391 @default.
• W2314400439 hasOpenAccess W2314400439 @default.
• W2314400439 hasPrimaryLocation W23144004391 @default.
• W2314400439 hasRelatedWork W173636472 @default.
• W2314400439 hasRelatedWork W2064142485 @default.
• W2314400439 hasRelatedWork W2505932828 @default.
• W2314400439 hasRelatedWork W2517572683 @default.
• W2314400439 hasRelatedWork W2905521216 @default.
• W2314400439 hasRelatedWork W4248090393 @default.
• W2314400439 hasRelatedWork W4248668362 @default.
• W2314400439 hasRelatedWork W4249173870 @default.
• W2314400439 hasRelatedWork W641396730 @default.
• W2314400439 hasRelatedWork W848284659 @default.
• W2314400439 isParatext "false" @default.
• W2314400439 isRetracted "false" @default.
• W2314400439 magId "2314400439" @default.
• W2314400439 workType "article" @default.