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			Photo #: ISS026-E-5121 Date: Nov. 2010 Geographic Region: BAHAMAS Feature: LONG ISLAND, TIDAL FLATS, SCOUR CHANNELS



	Tidal Flats and Channels, Long Island, Bahamas The islands of the Bahamas are situated on large depositional platforms--the Great and Little Bahama Banks--composed mainly of carbonate sediments ringed by reefs. The islands are the only parts of the platform currently exposed above sea level. The sediments were formed mostly from the skeletal remains of organisms settling to the sea floor; over geologic time, these sediments consolidated to form carbonate sedimentary rocks such as limestone. This astronaut photograph provides a view of tidal flats and channels near Sandy Cay, on the western side of Long Island and along the eastern margin of the Great Bahama Bank. The continuously exposed parts of the island are brown, a result of soil formation and vegetation growth. To the north of Sandy Cay, an off-white tidal flat composed of carbonate sediments is visible; light blue-green regions indicate shallow water on the tidal flat. The tidal flow of seawater is concentrated through gaps in the land surface, leading to the formation of relatively deep channels that cut into the sediments. The channels and areas to the south of the island have a vivid blue color that indicates deeper water.

Images:	All Available Images Low-Resolution 177k
Mission:	ISS026
Roll - Frame:	E - 5121
Geographical Name:	BAHAMAS
Features:	LONG ISLAND, TIDAL FLATS, SCOUR CHANNELS
Center Lat x Lon:	23.2N x 75.2W
Film Exposure:		N=Normal exposure, U=Under exposed, O=Over exposed, F=out of Focus
Percentage of Cloud Cover-CLDP:	10
Camera:	N2
Camera Tilt:	21	LO=Low Oblique, HO=High Oblique, NV=Near Vertical
Camera Focal Length:	800
Nadir to Photo Center Direction:	NE	The direction from the nadir to the center point, N=North, S=South, E=East, W=West
Stereo?:		Y=Yes there is an adjacent picture of the same area, N=No there isn't
Orbit Number:	920
Date:	20101127	YYYYMMDD
Time:	185538	GMT HHMMSS
Nadir Lat:	22.5N	Latitude of suborbital point of spacecraft
Nadir Lon:	76.2W	Longitude of suborbital point of spacecraft
Sun Azimuth:	217	Clockwise angle in degrees from north to the sun measured at the nadir point
Space Craft Altitude:	190	nautical miles
Sun Elevation:	37	Angle in degrees between the horizon and the sun, measured at the nadir point
Land Views:	ISLAND
Water Views:	SEA
Atmosphere Views:
Man Made Views:
City Views:

Photo is not associated with any sequences

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