Hvor ligger den dybeste del af havet?
Challenger Deep
Mariana Trench
Marianergraven eller Marianergraven er den dybeste del af verdenshavene. Den ligger i det vestlige Stillehav, gennemsnitligt 200 km øst for Marianerne, i det vestlige Stillehav øst for Filippinerne. Det er et halvmåneformet ar i jordskorpen og måler i gennemsnit ca. 2 550 km langt og 69 km bredt. Den når en maksimal kendt dybde på 10.994 meter (36.070 fod) (± 40 meter [130 fod]) ved en lille slidsformet dal i bunden, kendt som Challenger Deep, i den sydlige ende, selv om nogle uopdaterede målinger placerer den dybeste del på 11.034 meter (36.201 fod). Til sammenligning: Hvis Mount Everest blev kastet ned i grøften på dette sted, ville toppen stadig være over 1,6 kilometer under vandet. I 2009 blev Marianergraven oprettet som et amerikansk nationalmonument.
Challenger Deep
The Mariana Trench or Marianas Trench is the deepest part of the world's oceans. It is located in the western Pacific Ocean, an average of 200 kilometres (124 mi) to the east of the Mariana Islands, in the Western Pacific east of Philippines. It is a crescent-shaped scar in the Earth's crust, and measures about 2,550 km (1,580 mi) long and 69 km (43 mi) wide on average. It reaches a maximum-known depth of 10,994 metres (36,070 ft) (± 40 metres [130 ft]) at a small slot-shaped valley in its floor known as the Challenger Deep, at its southern end, although some unrepeated measurements place the deepest portion at 11,034 metres (36,201 ft). For comparison: if Mount Everest were dropped into the trench at this point, its peak would still be over 1.6 kilometres (1 mi) underwater. In 2009, the Marianas Trench was established as a United States National Monument.
Mariana Trench