{"id":"https://openalex.org/W168359489","doi":null,"title":"Experimental hypervelocity impact into quartz sand. II - Effects of gravitational acceleration","display_name":"Experimental hypervelocity impact into quartz sand. II - Effects of gravitational acceleration","publication_year":1977,"publication_date":"1977-01-01","ids":{"openalex":"https://openalex.org/W168359489","mag":"168359489"},"language":"en","primary_location":{"id":"mag:168359489","doi":null,"is_oa":false,"landing_page_url":"https://ntrs.nasa.gov/search.jsp?R=19780049491","pdf_url":null,"source":{"id":"https://openalex.org/S4306402118","display_name":"NASA Technical Reports Server (NASA)","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"listed_in":[],"host_organization":"https://openalex.org/I4210124779","host_organization_name":"National Aeronautics and Space Administration","host_organization_lineage":["https://openalex.org/I4210124779"],"host_organization_lineage_names":[],"type":"repository"},"license":null,"license_id":null,"version":null,"is_accepted":false,"is_published":false,"raw_source_name":null,"raw_type":null},"parent_works":[],"lineage":["https://openalex.org/W168359489"],"child_works_count":0,"type":"article","is_traditional":true,"indexed_in":[],"open_access":{"is_oa":false,"oa_status":"closed","oa_url":null,"any_repository_has_fulltext":false},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5055901389","display_name":"Donald E. Gault","orcid":null,"observed_orcids":[]},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"D. E. Gault","raw_affiliation_strings":[],"raw_orcid":null,"affiliations":[]},{"author_position":"last","author":{"id":"https://openalex.org/A5042259394","display_name":"J. A. Wedekind","orcid":null,"observed_orcids":[]},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"J. A. Wedekind","raw_affiliation_strings":[],"raw_orcid":null,"affiliations":[]}],"institutions":[],"countries_distinct_count":0,"institutions_distinct_count":0,"corresponding_author_ids":[],"corresponding_institution_ids":[],"apc_list":null,"apc_paid":null,"fwci":9.4616,"has_fulltext":false,"cited_by_count":61,"citation_normalized_percentile":{"value":0.97979215,"is_in_top_1_percent":false,"is_in_top_10_percent":true},"cited_by_percentile_year":{"min":88,"max":96},"biblio":{"volume":null,"issue":null,"first_page":"1231","last_page":"1244"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T11699","display_name":"High-Velocity Impact and Material Behavior","score":0.9208999872207642,"subfield":{"id":"https://openalex.org/subfields/2211","display_name":"Mechanics of Materials"},"field":{"id":"https://openalex.org/fields/22","display_name":"Engineering"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},"topics":[{"id":"https://openalex.org/T11699","display_name":"High-Velocity Impact and Material Behavior","score":0.9208999872207642,"subfield":{"id":"https://openalex.org/subfields/2211","display_name":"Mechanics of Materials"},"field":{"id":"https://openalex.org/fields/22","display_name":"Engineering"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T10325","display_name":"Astro and Planetary Science","score":0.05180000141263008,"subfield":{"id":"https://openalex.org/subfields/1912","display_name":"Space and Planetary Science"},"field":{"id":"https://openalex.org/fields/19","display_name":"Earth and Planetary Sciences"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T10406","display_name":"Planetary Science and Exploration","score":0.002099999925121665,"subfield":{"id":"https://openalex.org/subfields/1912","display_name":"Space and Planetary Science"},"field":{"id":"https://openalex.org/fields/19","display_name":"Earth and Planetary Sciences"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}}],"keywords":[{"id":"https://openalex.org/keywords/hypervelocity-impact","display_name":"hypervelocity impact","score":0.9990000128746033},{"id":"https://openalex.org/keywords/cratering","display_name":"crater formation","score":0.6899999976158142},{"id":"https://openalex.org/keywords/quartz-sand","display_name":"quartz sand","score":0.8989999890327454},{"id":"https://openalex.org/keywords/gravitational-acceleration","display_name":"gravitational acceleration","score":0.746999979019165},{"id":"https://openalex.org/keywords/aluminum-spheres","display_name":"aluminum spheres","score":0.5920000076293945},{"id":"https://openalex.org/keywords/crater-dimensions","display_name":"crater dimensions","score":0.6930000185966492},{"id":"https://openalex.org/keywords/dimensional-analysis","display_name":"dimensional analysis","score":0.8930000066757202},{"id":"https://openalex.org/keywords/target-strength","display_name":"target strength","score":0.7919999957084656},{"id":"https://openalex.org/keywords/impact-velocity","display_name":"impact velocity","score":0.3970000147819519}],"concepts":[{"id":"https://openalex.org/C179537507","wikidata":"https://www.wikidata.org/wiki/Q55818","display_name":"Impact crater","level":2,"score":0.9607936143875122},{"id":"https://openalex.org/C117740565","wikidata":"https://www.wikidata.org/wiki/Q3144223","display_name":"Hypervelocity","level":2,"score":0.959187388420105},{"id":"https://openalex.org/C2779870107","wikidata":"https://www.wikidata.org/wiki/Q43010","display_name":"Quartz","level":2,"score":0.7556806802749634},{"id":"https://openalex.org/C127313418","wikidata":"https://www.wikidata.org/wiki/Q1069","display_name":"Geology","level":0,"score":0.6041035652160645},{"id":"https://openalex.org/C71976986","wikidata":"https://www.wikidata.org/wiki/Q30006","display_name":"Gravitational acceleration","level":3,"score":0.5937422513961792},{"id":"https://openalex.org/C117896860","wikidata":"https://www.wikidata.org/wiki/Q11376","display_name":"Acceleration","level":2,"score":0.5927078127861023},{"id":"https://openalex.org/C72422203","wikidata":"https://www.wikidata.org/wiki/Q7392545","display_name":"SPHERES","level":2,"score":0.5078275799751282},{"id":"https://openalex.org/C124017977","wikidata":"https://www.wikidata.org/wiki/Q11412","display_name":"Gravitation","level":2,"score":0.4519370496273041},{"id":"https://openalex.org/C199289684","wikidata":"https://www.wikidata.org/wiki/Q83353","display_name":"Mineralogy","level":1,"score":0.3200043737888336},{"id":"https://openalex.org/C87355193","wikidata":"https://www.wikidata.org/wiki/Q411","display_name":"Astrobiology","level":1,"score":0.26632970571517944},{"id":"https://openalex.org/C121332964","wikidata":"https://www.wikidata.org/wiki/Q413","display_name":"Physics","level":0,"score":0.23536282777786255},{"id":"https://openalex.org/C1276947","wikidata":"https://www.wikidata.org/wiki/Q333","display_name":"Astronomy","level":1,"score":0.09254005551338196},{"id":"https://openalex.org/C74650414","wikidata":"https://www.wikidata.org/wiki/Q11397","display_name":"Classical mechanics","level":1,"score":0.0839557945728302},{"id":"https://openalex.org/C151730666","wikidata":"https://www.wikidata.org/wiki/Q7205","display_name":"Paleontology","level":1,"score":0.07833090424537659}],"mesh":[],"locations_count":1,"locations":[{"id":"mag:168359489","doi":null,"is_oa":false,"landing_page_url":"https://ntrs.nasa.gov/search.jsp?R=19780049491","pdf_url":null,"source":{"id":"https://openalex.org/S4306402118","display_name":"NASA Technical Reports Server (NASA)","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"listed_in":[],"host_organization":"https://openalex.org/I4210124779","host_organization_name":"National Aeronautics and Space Administration","host_organization_lineage":["https://openalex.org/I4210124779"],"host_organization_lineage_names":[],"type":"repository"},"license":null,"license_id":null,"version":null,"is_accepted":false,"is_published":false,"raw_source_name":null,"raw_type":null}],"best_oa_location":null,"sustainable_development_goals":[],"study_designs":[],"awards":[],"funders":[],"has_content":{"grobid_xml":false,"pdf":false},"content_urls":null,"referenced_works_count":0,"referenced_works":[],"related_works":["https://openalex.org/W4411178996","https://openalex.org/W2017139259","https://openalex.org/W2105744124","https://openalex.org/W1768391598","https://openalex.org/W2188139631","https://openalex.org/W2570848127","https://openalex.org/W1481658359","https://openalex.org/W2993593813","https://openalex.org/W1645775497","https://openalex.org/W3133981232"],"abstract_inverted_index":{"Experimental":[0],"results":[1,49,79],"for":[2,73],"craters":[3,74],"formed":[4,75],"by":[5],"aluminum":[6],"spheres":[7],"impacting":[8],"at":[9],"normal":[10],"incidence":[11],"against":[12],"quartz":[13],"sand":[14],"targets":[15],"in":[16,76],"gravitational":[17],"acceleration":[18],"environments":[19],"ranging":[20],"from":[21,36,50],"0.073":[22],"to":[23,38,69,82,94],"1.0":[24],"g":[25],"(g":[26],"=":[27],"980":[28],"cm/sq":[29],"sec)":[30],"are":[31,46,89],"reported.":[32],"Impact":[33],"velocities":[34],"varied":[35],"0.4":[37],"8.0":[39],"km/sec.":[40],"Crater":[41],"dimensions":[42],"and":[43,87],"formation":[44],"times":[45],"compared":[47],"with":[48],"a":[51,63],"simplified":[52],"dimensional":[53],"analysis":[54],"of":[55,66,91],"the":[56,60,70,78],"cratering":[57,95],"processes.":[58,96],"Although":[59],"comparison":[61],"indicates":[62],"dominant":[64],"role":[65],"gravity":[67,86],"relative":[68],"target":[71],"strength":[72,88],"sand,":[77],"serve":[80],"primarily":[81],"emphasize":[83],"that":[84],"both":[85],"variables":[90],"fundamental":[92],"significance":[93]},"counts_by_year":[{"year":2025,"cited_by_count":1},{"year":2023,"cited_by_count":1},{"year":2022,"cited_by_count":1},{"year":2019,"cited_by_count":2},{"year":2017,"cited_by_count":2},{"year":2015,"cited_by_count":1},{"year":2013,"cited_by_count":1},{"year":2012,"cited_by_count":1}],"updated_date":"2026-11-14T11:04:58.165337","created_date":"2016-06-24T00:00:00"}