NASA Photo ID: STS057-90-009 File Name: 10073299.jpg
Film Type: 70mm Date Taken: 07/01/93
Title: STS-57 Earth observation of King Sound in northwest Australia
Description:
STS-57 Earth observation taken aboard Endeavour, Orbiter Vehicle (OV) 105,
is of King Sound in northwest Australia. Roebuck Bay with the city of
Broom on its northern shore is south of King Sound. Sediment in the sound
is deposited by the Fitzroy River, which is the major body draining the
Kimberley Plateau about 200 miles to the west. The extent of the tidal
flats around the Sound is indicated by the large white areas covered with
a salty residue. According to NASA scientists studying the STS-57 Earth
photos, northwest wind gusts are ruffling areas of the water's surface at
the mouth of King Sound and in neighboring Collier Bay. Therefore the
water is less reflective and dark. The higher reflectance on the
brightest areas is caused by biological oils floating on the surface and
reducing the capillary wave action. The scientists point out that the
oils take the forms of the currents and eddies in the picture. These
eddies indicate that the water offshore is moving at a different speed
than the water along the coast. Lacepede, the small island off the coast,
has a phytoplankton bloom nearby, where nutrient-rich deeper waters have
been mixed with the surface waters in sufficient quantities for bloom to
occur.
Subject terms:
AUSTRALIA
BAYS (TOPOGRAPHIC FEATURES)
EARTH OBSERVATIONS (FROM SPACE)
ENDEAVOUR (ORBITER)
INDIAN OCEAN
ISLANDS
OCEAN CURRENTS
PHYTOPLANKTON
RIVERS
STS-57
WATER CURRENTS
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