44. ACCIDENTAL
DATA?
• May, 1990:
• The Hansa Carrier
• 21 boxcar-sized cargo
containers lost
• containing 30,910 pairs of
Nike shoes!
45. ACCIDENTAL
DATA?
• pairs were not tied
together
• beachcombers placed ads,
held swap meets, etc…
• oceanographers noticed
ads
46. ACCIDENTAL
DATA?
• requested where and
when information on shoe
findings
• refined computer models
of the North Pacific gyre
• some completed a FULL
circuit of the gyre!
47. ACCIDENTAL
DATA?
• January 1992, freighter
lost 29,000 rubber ducks,
etc. in the N. Pacific
• recovered from 500mi of
Alaskan shoreline
58. FORMATION
• area of storms moving
off African coast…
“cape verde” storms
• converging winds cause
storm to begin rotation
• requires WARM water to
continue dev. (80ºF)
59.
60. FORMATION
• water vapor rises quickly
• often continues until it
hits land in the W. hemisphere
• sometimes moves over colder
water or is sheared off by
easterly winds
61. IF DEVELOPMENT
CONTINUES
• A TROPICAL DISTURBANCE is an
organized area of storms for at
least 24 hrs.
• A TROPICAL DEPRESSION is an
area of low pressure with defined
circulation
62. IF DEVELOPMENT
CONTINUES
• A TROPICAL STORM is a strong
area of low press. and max.
sustained winds 39-73mph.
63. IF DEVELOPMENT
CONTINUES
• A HURRICANE has maximum
sustained winds over 73 mph.
• usually 200-250 miles in
diameter