Upload
larry-mayer-unh
View
79
Download
4
Tags:
Embed Size (px)
DESCRIPTION
University of New Hampshire scientists have discovered a new seamount near the Johnson Atoll in the Pacific Ocean. The summit of the seamount rises 1,100 meters from the 5,100-meter-deep ocean floor.
Citation preview
NEW MOUNTAINSSeamount in Pacific Ocean
University of New Hampshire Scientists Discover
larrymayerunh.com
Researchers at the Scripps Institution of Oceanography at UC San Diego usedsatellite measurements and gravity modeling to make the most detailed maps
ever produced of the ocean floor.
Three-dimensional view of the southwest side of the seamount with 23-degree slopes.(University of New Hampshire)
the red dots show locations of earthquakes with magnitude greater than 5.5,"highlight[ing] the present-day location of spreading ridges and transform faults"
Vertical gravity gradient (VGG) model of the Southwest Indian Ridge. This is the slowestspreading ridge on the Earth and has large fracture zone signatures that record the rifting
and spreading between Africa and Antarctica.
The high-resolution multibeam sonar bathymetry data show that the newly chartedseamount is not very prominent and rises just over 600 m from its base. However, it is wide
enough to be detected in the gravity signal.