{"id":"https://openalex.org/W2114709774","doi":"https://doi.org/10.1017/s037346330003486x","title":"Investigations into the Dip of the Horizon","display_name":"Investigations into the Dip of the Horizon","publication_year":1950,"publication_date":"1950-07-01","ids":{"openalex":"https://openalex.org/W2114709774","doi":"https://doi.org/10.1017/s037346330003486x","mag":"2114709774"},"language":"en","primary_location":{"id":"doi:10.1017/s037346330003486x","doi":"https://doi.org/10.1017/s037346330003486x","is_oa":false,"landing_page_url":"https://doi.org/10.1017/s037346330003486x","pdf_url":null,"source":{"id":"https://openalex.org/S14252860","display_name":"Journal of Navigation","issn_l":"0373-4633","issn":["0373-4633","1469-7785"],"is_oa":false,"is_in_doaj":false,"is_core":true,"listed_in":["cwts-core","dongbi-b","jufo-1","norway-1","poland-70","russia-white-list-1"],"host_organization":"https://openalex.org/P4310311721","host_organization_name":"Cambridge University Press","host_organization_lineage":["https://openalex.org/P4310311721","https://openalex.org/P4310311702"],"host_organization_lineage_names":["Cambridge University Press","University of Cambridge"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Journal of Navigation","raw_type":"journal-article"},"volume":null,"type":"article","indexed_in":["crossref"],"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/A5064429597","display_name":"Hans Christian Freiesleben","orcid":null,"observed_orcids":[]},"institutions":[],"countries":[],"is_corresponding":true,"raw_author_name":"H. C. Freiesleben","raw_affiliation_strings":["German Hydrographic Institute"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"German Hydrographic Institute","institution_ids":[]}]}],"institutions":[],"countries_distinct_count":0,"institutions_distinct_count":0,"corresponding_author_ids":["https://openalex.org/A5064429597"],"corresponding_institution_ids":[],"apc_list":{"value":3550,"currency":"USD","value_usd":3550},"apc_paid":null,"fwci":64.2353,"has_fulltext":false,"cited_by_count":7,"citation_normalized_percentile":{"value":0.99755651,"is_in_top_1_percent":true,"is_in_top_10_percent":true},"cited_by_percentile_year":{"min":89,"max":94},"biblio":{"volume":"3","issue":"3","first_page":"270","last_page":"279"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T13854","display_name":"Historical Geography and Cartography","score":0.7476000189781189,"subfield":{"id":"https://openalex.org/subfields/3305","display_name":"Geography, Planning and Development"},"field":{"id":"https://openalex.org/fields/33","display_name":"Social Sciences"},"domain":{"id":"https://openalex.org/domains/2","display_name":"Social Sciences"}},"topics":[{"id":"https://openalex.org/T13854","display_name":"Historical Geography and Cartography","score":0.7476000189781189,"subfield":{"id":"https://openalex.org/subfields/3305","display_name":"Geography, Planning and Development"},"field":{"id":"https://openalex.org/fields/33","display_name":"Social Sciences"},"domain":{"id":"https://openalex.org/domains/2","display_name":"Social Sciences"}},{"id":"https://openalex.org/T11622","display_name":"Maritime Navigation and Safety","score":0.11349999904632568,"subfield":{"id":"https://openalex.org/subfields/2212","display_name":"Ocean Engineering"},"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/T13121","display_name":"Radio Wave Propagation Studies","score":0.05820000171661377,"subfield":{"id":"https://openalex.org/subfields/2202","display_name":"Aerospace Engineering"},"field":{"id":"https://openalex.org/fields/22","display_name":"Engineering"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}}],"keywords":[],"concepts":[{"id":"https://openalex.org/C159176650","wikidata":"https://www.wikidata.org/wiki/Q43261","display_name":"Horizon","level":2,"score":0.6513849496841431},{"id":"https://openalex.org/C2780704645","wikidata":"https://www.wikidata.org/wiki/Q9251458","display_name":"Observer (physics)","level":2,"score":0.5489030480384827},{"id":"https://openalex.org/C127313418","wikidata":"https://www.wikidata.org/wiki/Q1069","display_name":"Geology","level":0,"score":0.501901388168335},{"id":"https://openalex.org/C13280743","wikidata":"https://www.wikidata.org/wiki/Q131089","display_name":"Geodesy","level":1,"score":0.5004446506500244},{"id":"https://openalex.org/C60365795","wikidata":"https://www.wikidata.org/wiki/Q1180638","display_name":"Magnetic dip","level":2,"score":0.45277976989746094},{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.3823610246181488},{"id":"https://openalex.org/C2524010","wikidata":"https://www.wikidata.org/wiki/Q8087","display_name":"Geometry","level":1,"score":0.23511353135108948},{"id":"https://openalex.org/C121332964","wikidata":"https://www.wikidata.org/wiki/Q413","display_name":"Physics","level":0,"score":0.23175206780433655},{"id":"https://openalex.org/C8058405","wikidata":"https://www.wikidata.org/wiki/Q46255","display_name":"Geophysics","level":1,"score":0.1532718539237976},{"id":"https://openalex.org/C62520636","wikidata":"https://www.wikidata.org/wiki/Q944","display_name":"Quantum mechanics","level":1,"score":0.0}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.1017/s037346330003486x","doi":"https://doi.org/10.1017/s037346330003486x","is_oa":false,"landing_page_url":"https://doi.org/10.1017/s037346330003486x","pdf_url":null,"source":{"id":"https://openalex.org/S14252860","display_name":"Journal of Navigation","issn_l":"0373-4633","issn":["0373-4633","1469-7785"],"is_oa":false,"is_in_doaj":false,"is_core":true,"listed_in":["cwts-core","dongbi-b","jufo-1","norway-1","poland-70","russia-white-list-1"],"host_organization":"https://openalex.org/P4310311721","host_organization_name":"Cambridge University Press","host_organization_lineage":["https://openalex.org/P4310311721","https://openalex.org/P4310311702"],"host_organization_lineage_names":["Cambridge University Press","University of Cambridge"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Journal of Navigation","raw_type":"journal-article"}],"best_oa_location":null,"sustainable_development_goals":[],"study_designs":[],"awards":[],"funders":[],"has_content":{"grobid_xml":false,"pdf":false},"content_urls":null,"referenced_works_count":1,"referenced_works":["https://openalex.org/W2093511406"],"related_works":["https://openalex.org/W4233354670","https://openalex.org/W4248510185","https://openalex.org/W2007094285","https://openalex.org/W4253212111","https://openalex.org/W2001321561","https://openalex.org/W2066609761","https://openalex.org/W2007364901","https://openalex.org/W1993000249","https://openalex.org/W92740877","https://openalex.org/W2316019591"],"abstract_inverted_index":{"The":[0],"dip":[1],"of":[2,10,26],"the":[3,7,16,24,38,45],"horizon":[4],"resulting":[5],"from":[6,15],"observer's":[8],"height":[9,25,39],"eye":[11,27],"can":[12,54],"be":[13,49,55],"calculated":[14],"formula":[17],"Dip":[18,32],"=":[19,33],"1\u2032\u00b706\u221aH,":[20],"where":[21,35],"H":[22],"is":[23,37],"in":[28,40,59],"feet,":[29],"or":[30],"by":[31],"1\u2032\u00b793\u221ah,":[34],"h":[36],"metres.":[41],"In":[42],"this":[43],"paper":[44],"latter":[46],"form":[47],"will":[48],"used":[50],"so":[51],"that":[52],"comparison":[53],"made":[56],"with":[57],"studies":[58],"international":[60],"publications.":[61]},"counts_by_year":[{"year":2022,"cited_by_count":1},{"year":2016,"cited_by_count":1}],"updated_date":"2026-10-30T12:39:25.321706","created_date":"2016-06-24T00:00:00"}
