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			Photo #: NM23-739-93 Date: Apr. 1997 Geographic Region: BAHAMAS Feature: TONGUE OF THE OCEAN



	NM23-739-093 Tongue of the Ocean, Bahamas Winter/Spring 1997 The shallow Bahama shelf and the southern portion of the deep Tongue of the Ocean (darker water, upper right) can be seen in this northwest-looking view. The Tongue of the Ocean is one of two main branches that form the Great Bahama Canyon. The vertical rock walls of this submarine canyon rise 14060 feet (4285 meters) from the canyon floor to the surrounding seabed. The Grand Bahama Canyon has been traced for more than 140 miles (225 km) in length. The canyon has a width of 23 miles (37 km) at its deepest point and an average floor slope of about 300 feet per mile (60 meters per km). During the last Ice Age, nearly 12000 years ago, much of the Bahama Shelf was above sea level. Rainfall during that period formed erosional type gullies or small canyons as rainwater flowed off the shelf into the Tongue of the Ocean. As the climate warmed and the ice melted, sea levels rose to present levels covering the eroded gullies seen on this image.

Images:	All Available Images Low-Resolution 280k
Mission:	NM23
Roll - Frame:	739 - 93
Geographical Name:	BAHAMAS
Features:	TONGUE OF THE OCEAN
Center Lat x Lon:	23.5N x 77W
Film Exposure:	N	N=Normal exposure, U=Under exposed, O=Over exposed, F=out of Focus
Percentage of Cloud Cover-CLDP:	5
Camera:	HB
Camera Tilt:	LO	LO=Low Oblique, HO=High Oblique, NV=Near Vertical
Camera Focal Length:	250
Nadir to Photo Center Direction:	W	The direction from the nadir to the center point, N=North, S=South, E=East, W=West
Stereo?:	Y	Y=Yes there is an adjacent picture of the same area, N=No there isn't
Orbit Number:	999
Date:	19970418	YYYYMMDD
Time:	173418	GMT HHMMSS
Nadir Lat:	19.5N	Latitude of suborbital point of spacecraft
Nadir Lon:	77.9E	Longitude of suborbital point of spacecraft
Sun Azimuth:	328	Clockwise angle in degrees from north to the sun measured at the nadir point
Space Craft Altitude:	211	nautical miles
Sun Elevation:	-55	Angle in degrees between the horizon and the sun, measured at the nadir point
Land Views:	EROSION
Water Views:	OCEAN
Atmosphere Views:
Man Made Views:
City Views:

Photo is not associated with any sequences

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