{"id":8964,"date":"2024-01-07T16:09:27","date_gmt":"2024-01-07T16:09:27","guid":{"rendered":"https:\/\/dailyai.com\/?p=8964"},"modified":"2024-01-07T18:19:46","modified_gmt":"2024-01-07T18:19:46","slug":"researchers-map-the-oceans-to-uncover-dark-vessels-and-offshore-structures","status":"publish","type":"post","link":"https:\/\/dailyai.com\/sv\/2024\/01\/researchers-map-the-oceans-to-uncover-dark-vessels-and-offshore-structures\/","title":{"rendered":"Forskare kartl\u00e4gger haven f\u00f6r att uppt\u00e4cka \"m\u00f6rka fartyg\" och strukturer till havs"},"content":{"rendered":"

Forskare har f\u00e5tt insikter i globala sj\u00f6fartsaktiviteter genom att anv\u00e4nda neurala n\u00e4tverk f\u00f6r att analysera satellit- och radarbilder.\u00a0<\/b><\/p>\n

Denna studie, som publicerades i <\/span>Natur<\/span><\/a> och leddes av Fernando Paolo fr\u00e5n <\/span>Global fiskebevakning<\/span><\/a>en ideell organisation baserad i Washington DC, visar att tre fj\u00e4rdedelar av v\u00e4rldens stora fiskefartyg och en fj\u00e4rdedel av transport- och energifartygen opererar som \"m\u00f6rka fartyg\" och inte delar med sig av sina positioner offentligt.<\/span><\/p>\n

Fernando Paolo f\u00f6rklarade: \"Historiskt sett har fartygsaktiviteter varit d\u00e5ligt dokumenterade, vilket begr\u00e4nsar v\u00e5r f\u00f6rst\u00e5else f\u00f6r hur v\u00e4rldens st\u00f6rsta offentliga resurs - havet - anv\u00e4nds.\"<\/span><\/p>\n

\u00a0\"Vi hade en id\u00e9 om att vi missade en stor del av den aktivitet som sker i havet, men vi visste inte hur mycket. Och vi fann att det \u00e4r mycket mer \u00e4n vi f\u00f6rest\u00e4llde oss.\"\u00a0<\/span><\/p>\n

Med hj\u00e4lp av data fr\u00e5n 2017 till 2021 analyserade teamet GPS-, satellit- och radarbilder fr\u00e5n kustomr\u00e5den d\u00e4r stora fiske- och industriverksamheter tenderar att vara koncentrerade. De<\/span>\u00a0utbildade flera neurala n\u00e4tverk f\u00f6r att uppt\u00e4cka och klassificera b\u00e5tar och offshore-strukturer i dessa bilder.<\/span><\/p>\n

Analysen visade att de flesta av de cirka 63.000 fartyg som sp\u00e5rades inte konsekvent anv\u00e4nde automatiska identifieringssystem, vilket v\u00e4ckte farh\u00e5gor om olagliga aktiviteter som oreglerat fiske.\u00a0<\/span><\/p>\n

\"Fiske
Kartl\u00e4ggning av fotavtrycket fr\u00e5n olika infrastrukturer till havs. K\u00e4llan \u00e4r: Natur<\/a>.<\/figcaption><\/figure>\n

En AI tr\u00e4nades specifikt f\u00f6r att skilja ut fiskefartyg baserat p\u00e5 deras resem\u00f6nster och platser, och fann att 42 till 49% av fartygen klassificerades som fiskeb\u00e5tar.<\/span><\/p>\n

Jennifer Raynor, bitr\u00e4dande professor i naturresursekonomi vid University of Wisconsin-Madison och medf\u00f6rfattare till studien, s\u00e4ger: \"Genom att avsl\u00f6ja m\u00f6rka fartyg har vi skapat den mest omfattande offentliga bild av det globala industriella fisket som finns tillg\u00e4nglig.\"\u00a0<\/span><\/p>\n

Dessutom identifierades 28.000 offshore-strukturer, inklusive s\u00e5dana som \u00e4r involverade i vindkraft och oljeproduktion, med en anm\u00e4rkningsv\u00e4rd \u00f6kning av vindkraftverk till havs.<\/span><\/p>\n

Antalet oljekonstruktioner \u00f6kade med 16% under studieperioden, men \u00e4nnu mer anm\u00e4rkningsv\u00e4rt var att antalet vindkraftverk mer \u00e4n f\u00f6rdubblades och \u00f6vertr\u00e4ffade oljeplattformarna 2021.\u00a0<\/span><\/p>\n

Tillv\u00e4xten inom havsbaserad vindkraft var s\u00e4rskilt uttalad i Kina, som upplevde en niofaldig \u00f6kning fr\u00e5n 2017 till 2021.<\/span><\/p>\n

\"Fiske
Det skedde en kraftig \u00f6kning av antalet vindkraftverk under hela studieperioden. K\u00e4llan \u00e4r: Natur<\/a>.<\/figcaption><\/figure>\n

Mer om studien<\/span><\/h2>\n

Studien som genomf\u00f6rdes av Global Fishing Watch kartlade industriella aktiviteter till havs med hj\u00e4lp av neurala n\u00e4tverk. <\/span><\/p>\n

H\u00e4r finns mer information om hur det fungerade:<\/span><\/p>\n

    \n
  1. Insamling och integrering av data<\/b>: Mellan 2017 och 2021 samlade teamet in en enorm m\u00e4ngd data, inklusive 2 petabyte satellitbilder, GPS-data fr\u00e5n fartyg och modeller f\u00f6r djupinl\u00e4rning. Dessa data t\u00e4ckte v\u00e4rldens kustvatten, d\u00e4r \u00f6ver 75% av industriell aktivitet \u00e4r koncentrerad.<\/span><\/li>\n
  2. Utveckling av modeller f\u00f6r djupinl\u00e4rning<\/b>: De utvecklade tre djupa faltningsneurala n\u00e4tverk. Dessa n\u00e4tverk var utformade f\u00f6r specifika uppgifter: identifiera objekt och uppskatta deras l\u00e4ngd med h\u00f6g noggrannhet, klassificera infrastruktur till havs i kategorier som olja, vind och andra strukturer samt skilja mellan fiskefartyg och icke-fiskefartyg.<\/span><\/li>\n
  3. Analys av satellitbilder och GPS-data fr\u00e5n fartyg<\/b>: Forskarna analyserade satellitbilder f\u00f6r att uppt\u00e4cka fartyg och offshore-strukturer och matchade sedan dessa resultat med GPS-data fr\u00e5n fartyg som offentligt s\u00e4nder ut sin plats. Detta avsl\u00f6jade att en betydande del av industriella fiskefartyg (72 till 76%) och andra fartyg (21 till 30%) inte sp\u00e5rades offentligt.<\/span><\/li>\n
  4. Kartl\u00e4ggning och av aktiviteter<\/b>: Teamet kartlade fartygsaktiviteter och energiinfrastruktur till havs, och belyste f\u00f6rdelningen och koncentrationen av dessa aktiviteter i kustvatten. De uppt\u00e4ckte att fiskeaktiviteterna minskade betydligt under covid-19-pandemin, medan transport- och energifartygsaktiviteterna f\u00f6rblev relativt stabila.<\/span><\/li>\n
  5. Utv\u00e4rdering av milj\u00f6p\u00e5verkan<\/b>: Slutligen identifierade forskarna potentiella hotspots f\u00f6r olagligt fiske och kvantifierade omfattningen av fartygsaktiviteter, inklusive den snabba tillv\u00e4xten av infrastruktur f\u00f6r havsbaserad vindkraft, som \u00f6vertr\u00e4ffade antalet oljestrukturer 2021.\u00a0<\/span><\/li>\n<\/ol>\n

    Forskarna hoppas att denna karta nu kan hj\u00e4lpa till att hantera och f\u00f6rst\u00e5 framtida m\u00e4nskliga aktiviteter i havet.\u00a0<\/span><\/p>\n

    Som medf\u00f6rfattaren Patrick Halpin, professor i marin geospatial ekologi vid Duke University, s\u00e4ger: \"Antropocens fotavtryck \u00e4r inte l\u00e4ngre begr\u00e4nsat till terra firma\", vilket inneb\u00e4r att m\u00e4nsklig aktivitet under den nuvarande epoken har tr\u00e4ngt in i varje h\u00f6rn av planeten. <\/span><\/p>","protected":false},"excerpt":{"rendered":"

    Med hj\u00e4lp av neurala n\u00e4tverk som analyserar satellit- och radarbilder har forskare f\u00e5tt insikter i den globala sj\u00f6farten. Studien, som publicerades i Nature och leddes av Fernando Paolo fr\u00e5n Global Fishing Watch, en ideell organisation baserad i Washington DC, visar att tre fj\u00e4rdedelar av v\u00e4rldens stora fiskefartyg och en fj\u00e4rdedel av transport- och energifartygen opererar som \"m\u00f6rka fartyg\" och inte delar med sig av sina positioner offentligt. Fernando Paolo f\u00f6rklarar: \"Historiskt sett har fartygsaktiviteter varit d\u00e5ligt dokumenterade, vilket begr\u00e4nsar v\u00e5r f\u00f6rst\u00e5else f\u00f6r hur v\u00e4rldens st\u00f6rsta offentliga resurs - havet - anv\u00e4nds.\" \"Vi hade en id\u00e9 om att vi missade en stor del av den aktivitet som sker i<\/p>","protected":false},"author":2,"featured_media":8966,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[88],"tags":[105],"class_list":["post-8964","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-ethics","tag-machine-learning"],"yoast_head":"\nResearchers map the oceans to uncover 'dark vessels' and offshore structures | DailyAI<\/title>\n<meta name=\"description\" content=\"Researchers have uncovered insights into global maritime activities by using neural networks to analyze satellite and radar images.\u00a0\" \/>\n<meta name=\"robots\" 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