| dbo:abstract |
In physical oceanography, undertow is the undercurrent that is moving offshore when waves are approaching the shore. Undertow is a natural and universal feature for almost any large body of water: it is a return flow compensating for the onshore-directed average transport of water by the waves in the zone above the wave troughs. The undertow's flow velocities are generally strongest in the surf zone, where the water is shallow and the waves are high due to shoaling. In popular usage, the word "undertow" is often misapplied to rip currents. An undertow occurs everywhere underneath shore-approaching waves, whereas rip currents are localized narrow offshore currents occurring at certain locations along the coast. (en) Odpływ (odpływ zwrotny, odpływ denny) – przepływ wody blisko dna w stronę morza powodowany przez fale transportujące wodę na powierzchni morza w stronę brzegu. Odpływ przy dnie jest związany z dryfem Stokesa w strefie załamywania się fal przy brzegu i jest często mylony z prądami strugowymi. (pl) Ressaca é o movimento anormal das ondas do mar sobre si mesmas na área de rebentação, causada por rápidas e violentas mudanças no tempo. (pt) |
| dbo:thumbnail |
wiki-commons:Special:FilePath/Buhr_Hansen_and_Svendsen_ICCE_1984_Fig_1.png?width=300 |
| dbo:wikiPageExternalLink |
https://icce-ojs-tamu.tdl.org/icce/index.php/icce/article/view/4051 https://icce-ojs-tamu.tdl.org/icce/index.php/icce/article/viewArticle/3932 http://www.cbsnews.com/stories/2004/05/27/earlyshow/living/main619959.shtml |
| dbo:wikiPageID |
24567168 (xsd:integer) |
| dbo:wikiPageLength |
12220 (xsd:nonNegativeInteger) |
| dbo:wikiPageRevisionID |
1117812669 (xsd:integer) |
| dbo:wikiPageWikiLink |
dbr:Potential_energy dbr:Sand_bar dbr:Breaking_wave dbr:United_States_Lifesaving_Association dbr:Standard_deviation dbr:Equipartition_theorem dbr:Stokes_wave dbr:Density dbr:Stokes_drift dbr:Mass_flux dbr:Tullio_Levi-Civita dbr:Crest_(physics) dbr:Amplitude dbr:Frame_of_reference dbr:Nonlinear dbr:Flow_velocity dbr:Rip_current dbc:Physical_oceanography dbc:Water_waves dbr:Kinetic_energy dbr:Surf_zone dbr:Trough_(physics) dbr:Average dbr:Square_(algebra) dbr:Wave_shoaling dbr:Wavelength dbr:Sediment_transport dbr:Physical_oceanography dbr:Water_column dbr:Periodic_function dbr:Wave_height dbr:Wind_wave dbr:Inviscid dbr:Phase_speed dbr:Michael_Longuet-Higgins dbr:Near-bed dbr:Root-mean-square dbr:Wave_trough dbr:File:Buhr_Hansen_and_Svendsen_ICCE_1984_Fig_1.png dbr:File:Okayasu_Shibayama_Mimura_ICCE_1986_Fig_8.png |
| dbp:wikiPageUsesTemplate |
dbt:About dbt:About-distinguish dbt:Annotated_link dbt:Authority_control dbt:Citation dbt:Harvtxt dbt:Main_article dbt:Portal dbt:Quote dbt:Ref_begin dbt:Ref_end dbt:Reflist dbt:Short_description dbt:Underwater_diving dbt:Coastal_geography dbt:Physical_oceanography |
| dcterms:subject |
dbc:Physical_oceanography dbc:Water_waves |
| gold:hypernym |
dbr:– |
| rdf:type |
owl:Thing yago:WikicatWaterWaves yago:Abstraction100002137 yago:Event100029378 yago:Happening107283608 yago:Movement107309781 yago:PsychologicalFeature100023100 yago:YagoPermanentlyLocatedEntity yago:Wave107352190 |
| rdfs:comment |
Odpływ (odpływ zwrotny, odpływ denny) – przepływ wody blisko dna w stronę morza powodowany przez fale transportujące wodę na powierzchni morza w stronę brzegu. Odpływ przy dnie jest związany z dryfem Stokesa w strefie załamywania się fal przy brzegu i jest często mylony z prądami strugowymi. (pl) Ressaca é o movimento anormal das ondas do mar sobre si mesmas na área de rebentação, causada por rápidas e violentas mudanças no tempo. (pt) In physical oceanography, undertow is the undercurrent that is moving offshore when waves are approaching the shore. Undertow is a natural and universal feature for almost any large body of water: it is a return flow compensating for the onshore-directed average transport of water by the waves in the zone above the wave troughs. The undertow's flow velocities are generally strongest in the surf zone, where the water is shallow and the waves are high due to shoaling. (en) |
| rdfs:label |
Odpływ (fale) (pl) Ressaca marítima (pt) Undertow (water waves) (en) |
| owl:sameAs |
freebase:Undertow (water waves) yago-res:Undertow (water waves) wikidata:Undertow (water waves) dbpedia-fa:Undertow (water waves) dbpedia-he:Undertow (water waves) dbpedia-no:Undertow (water waves) dbpedia-pl:Undertow (water waves) dbpedia-pt:Undertow (water waves) https://global.dbpedia.org/id/4wMMK |
| prov:wasDerivedFrom |
wikipedia-en:Undertow_(water_waves)?oldid=1117812669&ns=0 |
| foaf:depiction |
wiki-commons:Special:FilePath/Buhr_Hansen_and_Svendsen_ICCE_1984_Fig_1.png wiki-commons:Special:FilePath/Okayasu_Shibayama_Mimura_ICCE_1986_Fig_8.png |
| foaf:isPrimaryTopicOf |
wikipedia-en:Undertow_(water_waves) |
| is dbo:wikiPageDisambiguates of |
dbr:Undertow |
| is dbo:wikiPageRedirects of |
dbr:Undertow_(wave_action) |
| is dbo:wikiPageWikiLink of |
dbr:Castlewood_State_Park dbr:David_A._Kennedy dbr:Araminta_Station dbr:Undertow_(The_Wire) dbr:Incidents_at_Cedar_Fair_parks dbr:List_of_severe_weather_phenomena dbr:Pakenham_Bridge dbr:Glossary_of_underwater_diving_terminology:_T–Z dbr:Star_of_Bengal dbr:Tropical_cyclone dbr:May_1964 dbr:Diving_hazards dbr:Finding_Dory dbr:Cave_Bay,_Barbados dbr:Rip_current dbr:SS_Regulus dbr:Greg_Puciato dbr:Hurricane_Emily_(1993) dbr:Archibald_Gracie_IV dbr:Kamuy dbr:Disappearance_of_Harold_Holt dbr:Mark_Wainberg dbr:Plum_Island_(Massachusetts) dbr:Yehuda_Grunfeld dbr:Undertow dbr:The_Day_That_Went_Missing dbr:Outline_of_oceanography dbr:Undertow_(wave_action) |
| is foaf:primaryTopic of |
wikipedia-en:Undertow_(water_waves) |
