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Re: Some basic methane hydrate data/link

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  • Pawnfart
    Rivers, Mitch and Venezuala flooding.
    Message 1 of 702 , Feb 11, 2001
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      Rivers, Mitch and Venezuala
      flooding.<br><br><a href=http://xtreme.gsfc.nasa.gov/CAMPAIGN_DOCS/OCDST/ocdst_coastal_features.html target=new>http://xtreme.gsfc.nasa.gov/CAMPAIGN_DOCS/OCDST/ocdst_coastal_features.html</a><br><br>Pigment distributions off the northeast coast of South
      America (left, Sept. 1979) are dominated by the influence
      of two great rivers--the Amazon and the
      Orinoco--which together contribute 20 percent of the global
      river discharge to the ocean. The Orinoco plume extends
      into the Caribbean, while the Amazon plume flows north
      along the Brazilian coast and then meanders eastward
      across the Atlantic, influenced by the North Equatorial
      Countercurrent.
      <br><br><a href=http://woodshole.er.usgs.gov/project-pages/hydrates/where.html target=new>http://woodshole.er.usgs.gov/project-pages/hydrates/where.html</a><br><br>The major fields of methane hydrate form a triangle
      from the Amazon delta to the east Canada coast, like
      connecting the dots. In the middle of this larger triangle,
      is the Bermuda triangle. Currents on the surface
      generally flow along the dots from the Amazon delta area to
      the east Canada coast. It should be noted that fresh
      water dilution from the Amazon would rise the freezing
      point of methane hydrates, favoring their formation.
      This is what makes the dams built on the Amazon and
      other rivers in the region so interesting with respect
      to hurricanes.<br><br>Cause of massive methane
      hydrate formation and hence local flooding?
      <br><br><br><a href=http://csf.colorado.edu/elan/96/nov96/0116.html target=new>http://csf.colorado.edu/elan/96/nov96/0116.html</a><br><br><br>Venezuela's Mega-Project to Channel Rivers
      <br><br><a href=http://www.atkn.com/html/dam___hydro.html target=new>http://www.atkn.com/html/dam___hydro.html</a><br><br>Guri Hydroelectric Project, Caroni River, Venezuela:
      Concrete gravity dam, increasing its size from 348 feet to
      532 feet high and from 2,772 feet to 4,314 feet long,
      and construction of 8,050-MW, 10-unit powerhouse
      together involving concrete placement of 8,280,000 cubic
      yards; installation and testing of turbine-generators.
      <br><br>Macagua II Hydroelectric Project, Coroni River,
      Venezuela: Construction of two powerhouses, one 12-unit
      2,352-MW, the other a 2-unit 138-MW, as well as 12-gate
      spillway, concrete gravity dam and intake structures
      fronting the powerhouses, concrete non-overflow transition
      structures, visitors' center, and control room. <br><br>Of
      course, the problem is
      worldwide:<br><br><a href=http://www.edf.org/programs/International/Dams/WorldMap.html target=new>http://www.edf.org/programs/International/Dams/WorldMap.html</a>
    • b1blancer_29501
      On Feb 28th, the Interplanetary Magnetic Field swung to a strong south-pointing orientation. That, coupled with an elevated solar wind speed and density,
      Message 702 of 702 , Mar 1, 2002
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        On Feb 28th, the Interplanetary Magnetic Field
        swung to a strong south-pointing orientation. That,
        coupled with an elevated solar wind speed and density,
        triggered a G-1 class geomagnetic storm. The result was
        some high latitude aurora. See this link for a
        photgraph of aurora observed over Quebec :
        <a href=http://www.spaceweather.com/aurora/images/01mar02/Moussette2.jpg target=new>http://www.spaceweather.com/aurora/images/01mar02/Moussette2.jpg</a> . As of right now, there are 3 sunspot regions,
        namely 9839, 9842, and 9845, that appear to be capable
        of producing M-class flares. Regions 9839 and 9842
        are close to rotating out of view over the western
        limb of the solar disk. Sunspot region 9845, however,
        is close to the sun's central meridian. A rather
        large coronal hole is also approaching the sun's
        central meridian, and coming into an Earth-pointing
        position. High speed colar wind gusts are likely around the
        first of next week.<br><br>The current solar and
        geomagnetic conditions are :<br><br>NOAA sunspot number :
        153<br>SFI : 188<br>A index : 10<br>K index : 1<br><br>Solar
        wind speed : 372.3 km/sec<br>Solar wind density : 4.4
        protons/cc<br>Solar wind pressure : 1.1 nPa<br><br>IMF : 8.4
        nT<br>IMF Orientation : 0.7 nT North<br><br>Conditions for
        the last 24 hours : <br>Solar activity was low. The
        geomagnetic field was quiet to unsettled. Stratwarm Alert
        exists Friday.<br><br>Forecast for the next 24 hours
        :<br>Solar activity will be low to moderate. The geomagnetic
        field will be quiet to unsettled.<br><br>Solar Activity
        Forecast :<br>Solar activity is expected to be low to
        moderate for the next three days. Region 9845 is a
        possible source for isolated M-class
        flares.<br><br>Geomagnetic activity forecast :<br>Geomagnetic field activity
        is expected to be mainly quiet to unsettled, until
        the onset of high speed stream effects from a
        recurrent coronal hole begin to develop by day three of the
        forecast period. Isolated active conditions are
        anticipated thereafter.<br><br>Recent significant solar flare
        activity :<br>None
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