Title

So, how deep is the Mariana Trench?

Abstract

HMS Challenger made the first sounding of Challenger Deep in 1875 of 8184 m. Many have since claimed depths deeper thanChallenger's 8184 m, but few have provided details of how the determination was made. In 2010, the Mariana Trench was mapped with a Kongsberg Maritime EM122 multibeam echosounder and recorded the deepest sounding of 10,984 ± 25 m (95%) at 11.329903°N/142.199305°E. The depth was determined with an update of the HGM uncertainty model combined with the Lomb-Scargle periodogram technique and a modal estimate of depth. Position uncertainty was determined from multiple DGPS receivers and a POS/MV motion sensor.

Publication Date

9-20-2013

Journal or Conference Title

Marine Geodesy

Volume

37, Issue 1

Pages

1-13

Publisher Place

Boulder, CO

Publisher

Taylor & Francis

Digital Object Identifier (DOI)

10.1080/01490419.2013.837849

Document Type

Journal Article