{"id":538,"date":"2023-03-15T14:40:36","date_gmt":"2023-03-15T14:40:36","guid":{"rendered":"https:\/\/clntranslations.teclan.org\/sonar-demonstrasjon\/"},"modified":"2023-04-06T17:33:38","modified_gmt":"2023-04-06T16:33:38","slug":"sonar-demonstrasjon","status":"publish","type":"post","link":"https:\/\/guides.cruiselochness.com\/no\/sonar-demonstrasjon\/","title":{"rendered":"Sonar-Demonstrasjon"},"content":{"rendered":"\n<p>Sonar er v\u00e5rt eneste effektive verkt\u00f8y for undervannss\u00f8k. Systemet sender pulserende lydb\u00f8lger som, n\u00e5r de treffer noe i vannet, reflekteres tilbake og kan deretter tolkes.  <\/p>\n\n<p>Det er spesielt effektivt til \u00e5 oppdage objekter som har annen tetthet enn vann. Innsj\u00f8ens vegger reflekterer sterke signaler da disse er av stein, mens mudderbunnen gir svakere retursignal.  <\/p>\n\n<p>Luft reflekteres sv\u00e6rt sterkt, mens kj\u00f8tt har nesten samme tetthet som vann og reflekteres svakt. N\u00e5r man s\u00f8ker etter dyr med sonar, er det lungene i et pattedyr eller krypdyr, eller sv\u00f8mmebl\u00e6ren i en fisk, som gir best retursignal.  <\/p>\n\n<p>Det er ikke mulig \u00e5 fastsette st\u00f8rrelsen av et objekt ved hjelp av sonar, kun en styrke. Du tenker kanskje at de to er det samme, men det er ikke tilfelle. For eksempel vil en mann som sv\u00f8mmer gjennom lydb\u00f8lgen med et pusteapparat reflektere veldig sterkt, men det er luften i masken og drakten hans som i hovedsak gir disse retursignalene.  <\/p>\n\n<p>Da Operation Deepscan i 1987 registrerte tre sv\u00e6rt sterke retursignaler, var det ikke mulig \u00e5 angi st\u00f8rrelsen fordi forskjellige dyr har varierende refleksjonsstyrke. En \u00e5l, for eksempel, har ingen luftbl\u00e6re i kroppen, og m\u00e5 derfor v\u00e6re enorm for \u00e5 bli registrert.  <\/p>\n\n<p>De som er godt kjent med bruken av sonar kan beregne st\u00f8rrelsen p\u00e5 objekter basert p\u00e5 tidligere erfaringer, og Darrell Lowrance som var del av Operation Deepscan estimerte at det sterkeste retursignalet var st\u00f8rre enn en hai, men mindre enn en hval. <\/p>\n\n<p>Jeg er sikker p\u00e5 at de fleste av oss er forn\u00f8yde med at Nessie er innenfor det omr\u00e5det.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Til dere som er p\u00e5 \u00f8verste dekk, hvis dere kommer ned i salongen s\u00e5 skal vi snart i gang med en presentasjon og demonstrasjon av bruken av sonarsystemer i Loch Ness.<\/p>\n","protected":false},"author":1,"featured_media":306,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":"","_wp_rev_ctl_limit":""},"categories":[21],"tags":[],"class_list":["post-538","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-uncategorized-no"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.2 - 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