oceanography pg19.html

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<B><strong>Marine Ice: </strong></U></P
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></B>Iceberg vs. Ice flow (Pack Ice)<FONT size="+1"> </P
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><FONT size="+1">Iceberg originates on land - Firn field/snow field - fresh water<FONT size="+1"> </P
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><FONT size="+1">Marine Glacier moves into sea and breaks<FONT size="+1"> </P
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><FONT size="+1">Ice flow formed by ocean I-H2O froze<FONT size="+1"> </P
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><FONT size="+1">Iceberg - NA - Highly Jagged + splintered - smaller than - very dense float low in H20<FONT size="+1"> </P
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><FONT size="+1">50 miles long max usually 4 miles long or less<FONT size="+1"> </P
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><FONT size="+1">100-150 feet high (900 feet below surface) - Titanic<FONT size="+1"> </P
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><FONT size="+1">IIP: 43 - 47 degrees North - Labrador + East Greenland current - Boston 42 degrees 37<FONT size="+1"> </P
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><FONT size="+1">degrees<FONT size="+1"> </P
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><FONT size="+1">Further south @ 30 North (Southeastern most iceberg limit)<br>
<FONT size="+1" color="#000000"></B>Mass and H20 temp allows for life span of 2-3 years<FONT size="+1"> </P
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><FONT size="+1">Bergs are carried by currents (Labrador) as opposed to<FONT size="+1"> </P
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><FONT size="+1">Antarctic Ice bergs - less dense - tend to stay within west wind drift current<FONT size="+1"> </P
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><FONT size="+1">Smaller-higher out of H2O temp allows for life span of 2-3 years<FONT size="+1"> </P
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><FONT size="+1">H2O 35 degrees south latitudes farthest point North visually for icebergs<FONT size="+1"> </P
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><FONT size="+1">Pack Ice or Icebergs are common<FONT size="+1"> </P
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><FONT size="+1">Pack ice or Ice flow - Pancake vs. Fast Ice = Salt water<FONT size="+1"> </P
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><FONT size="+1">FP @ 35 =-1.9 degrees C<FONT size="+1"> </P
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><FONT size="+1">Ice = Salt + Ice<FONT size="+1"> </P
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><U><FONT size="+1"><B>Pacific Ice Area</U></B> - Max 250 - 300 miles into the ocean<FONT size="+1"> </P
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><FONT size="+1">Ice Salinity: 4-5<FONT size="+1"> </P
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><FONT size="+1">Surface erodes and new ice from below is less saline<FONT size="+1"> </P
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><FONT size="+1">Sea Ice Age: 5-6 years<FONT size="+1"> </P
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><FONT size="+1">10-30 meters thick on thick areas (ridges/average = 9 meters)<FONT size="+1"> </P
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><U><FONT size="+1"><B>North Hemisphere Sea Ice differs because: </U></P
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></B>Season<FONT size="+1"> </P
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><FONT size="+1">Land mass temp<FONT size="+1"> </P
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><FONT size="+1">Ocean US land mass area Ice Islands<FONT size="+1"> </P
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><FONT size="+1">Iceberg Deep (Ice Pack)<FONT size="+1"> </P
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><FONT size="+1">Ti - T2: Salt water<FONT size="+1"> </P
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><FONT size="+1">4-5 years + 3000 miles: Ocean Drift<FONT size="+1"> </P
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><FONT size="+1">Note: There are Distinctions of Ocean H20: Vertical water circulation<FONT size="+1"> </P
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><FONT size="+1">SW: Surface<FONT size="+1"> </P
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><FONT size="+1">UW: upper<FONT size="+1"> </P
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><FONT size="+1">IW: indetermediate<FONT size="+1"> </P
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><FONT size="+1">DW: Deep<FONT size="+1"> </P
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><FONT size="+1">BW: Bottom<FONT size="+1"> </P
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><FONT size="+1">Gulf Stream - Franklin<FONT size="+1"> </P
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><FONT size="+1">Agassiz<FONT size="+1"> </P
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><FONT size="+1">Gulf Stream: 100 miles wide in narrows (95 Nauts)<FONT size="+1">