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Posted By:
Hal Brown
Date Posted:
Sep 13, 2008
Description:
South of Grays Harbor is another larger bay: Willapa Bay. Its namesake, the town of Willapa, is on the east side of the bay.
Willapa Bay is another low area that was high and dry during the last ice age when sea level was 300’ lower. As sea levels rose during the last 8000 years, a great sand barrier was created. Winter storms with southwest winds carried sediments from the Columbia River and left them in a great streak across the mouth of the bay.
Date Taken:
Sep 13, 2008
Place Taken:
Leadbetter Point, WA
Owner:
Dan Nickens
File Name:
42_Sandy_Barrier.jpg - Photo HTML
Full size - <img src="/show.php?splash=SZTBI0000h">
Medium - <img src="/show.php?splash=SZTBI0000m">
Thumbnail - <img src="/show.php?splash=SZTBI0000s">
Category:
329, Taking Peli Home
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Click on photo to view the original size. |
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Read what others had to say:
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Bård Sørbye - Sep 13,2008
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Interesting to hear that the sea rose 300 feet after the icecap melted. In Norway, the land started rising at the same time, as the weight of the icecap disappeared. It's still rising.
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Dan Nickens - Sep 13,2008
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Kinda makes you wonder where they are measuring from, doesn't it?
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Bård Sørbye - Sep 14,2008
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Lots of old oyster shells far inland and at altitude. Old shorelines, sediments deposited under seawater, etc. Measurements since the 1700s. Around Oslo the land has risen 220 meters and still rises 3 mm per year. In the southeast it is sinking. My source (wikipedia article in norwegian) says land rises north of the North American Great Lakes while the south shore is sinking. Movement of tectonic plates complicate matters.
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Dan Nickens - Sep 14,2008
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Having an immediate interest by virtue of living below sea level, folks in the Netherlands have been measuring sea level change since the 1700s (see <a href="http://www.pol.ac.uk/psmsl/longrecords/longrecords.html">http://www.pol.ac.uk/psmsl/longrecords/longrecords.html</a> ). As explained in the English language Wikipedia article, (<a href="http://en.wikipedia.org/wiki/Sea_level_rise">http://en.wikipedia.org/wiki/Sea_level_rise</a> , measurements are certainly subject to some uncertainties. I suppose it is accurate to say sea level changed by some 300 feet in the bay without saying why or whose ruler was used.
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Bård Sørbye - Sep 15,2008
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It's a precarious wobbly surface we are living on! A good thing that we can escape through the air now and then;-)
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