<?xml version="1.0" encoding="ISO-8859-1"?>
<metadata>
  <idinfo>
    <datsetid>
      org.nsidc:G00494
    </datsetid>
    <citation>
      <citeinfo>
        <origin>
          National Snow and Ice Data Center (NSIDC)
        </origin>
        <pubdate>
          Unknown
        </pubdate>
        <title>
          Great Lakes Aerial Photos of Ice Conditions
        </title>
        <pubinfo>
          <pubplace>
            Boulder, CO  U.S.A.
          </pubplace>
          <publish>
            National Snow and Ice Data Center (NSIDC)
          </publish>
        </pubinfo>
        <onlink>
          http://nsidc.org/data/G00494.html
        </onlink>
      </citeinfo>
    </citation>
    <descript>
      <abstract>
        The collection consists of approximately 50,000 high-quality negatives and transparencies showing ice cover impact on navigation or hydroelectric operation from 1963 to 1973. Coverage is not systematic or complete. Indexing has not been undertaken, but latitude and longitude of flight line begin and end points are logged. Photos from many flights have been made into photomosaics that can be used on-site as a gross index to the 9-inch roll negatives. Photographic flights were carried out by a U.S. Air Force photomapping wing, using flight lines selected by NOAA Lake Survey Center (now Great Lakes Environmental Research Laboratory).

Custom photo products may be ordered and the collection is available for on-site use by appointment; limited searching of the collection is offered to fulfill off-site requests.
      </abstract>
      <purpose>
        scientific research
      </purpose>
    </descript>
    <timeperd>
      <timeinfo>
        <rngdates>
          <begdate>
            19630101
          </begdate>
          <enddate>
            19730101
          </enddate>
        </rngdates>
      </timeinfo>
      <current>
        publication date
      </current>
    </timeperd>
    <status>
      <progress>
        Complete
      </progress>
      <update>
        Unknown
      </update>
    </status>
    <spdom>
      <bounding>
        <westbc>
          -93
        </westbc>
        <eastbc>
          -76
        </eastbc>
        <northbc>
          49
        </northbc>
        <southbc>
          41
        </southbc>
      </bounding>
    </spdom>
    <keywords>
      <theme>
        <themekt>
          NASA Global Change Master Directory (GCMD) Science Keywords
        </themekt>
        <themekey>
          EARTH SCIENCE &gt; Cryosphere &gt; Snow/Ice &gt; Lake Ice
        </themekey>
        <themekey>
          EARTH SCIENCE &gt; Cryosphere &gt; Snow/Ice &gt; River Ice
        </themekey>
        <themekey>
          EARTH SCIENCE &gt; Spectral/Engineering &gt; Visible Wavelengths &gt; Visible Imagery
        </themekey>
        <themekey>
          EARTH SCIENCE &gt; Terrestrial Hydrosphere &gt; Snow/Ice &gt; Lake Ice
        </themekey>
        <themekey>
          EARTH SCIENCE &gt; Terrestrial Hydrosphere &gt; Snow/Ice &gt; River Ice
        </themekey>
      </theme>
      <theme>
        <themekt>
          NASA Global Change Master Directory (GCMD) Instrument Keywords
        </themekt>
        <themekey>
          CAMERAS
        </themekey>
      </theme>
      <theme>
        <themekt>
          NASA Global Change Master Directory (GCMD) Platform Keywords
        </themekt>
        <themekey>
          AIRCRAFT
        </themekey>
      </theme>
      <theme>
        <themekt>
          ISO 19115 Topic Categories
        </themekt>
        <themekey>
          inlandWaters
        </themekey>
      </theme>
      <theme>
        <themekt>
          None
        </themekt>
        <themekey>
          Aerial Photography
        </themekey>
        <themekey>
          Climatology
        </themekey>
        <themekey>
          Freshwater Ice
        </themekey>
        <themekey>
          Great Lakes
        </themekey>
        <themekey>
          IDN_NODE GSFC/NSIDC
        </themekey>
        <themekey>
          Lake Ice
        </themekey>
        <themekey>
          River Ice
        </themekey>
        <themekey>
          Surface
        </themekey>
      </theme>
      <place>
        <placekt>
          NASA Global Change Master Directory (GCMD) Location Keywords
        </placekt>
        <placekey>
          Continent &gt; North America
        </placekey>
        <placekey>
          Continent &gt; North America &gt; United States Of America
        </placekey>
        <placekey>
          Continent &gt; North America &gt; United States Of America &gt; Great Lakes &gt; Great Lakes
        </placekey>
        <placekey>
          Geographic Region &gt; Mid-latitude
        </placekey>
      </place>
    </keywords>
    <thelayid>
      <numthlay>
        5
      </numthlay>
      <layrname>
        <theme>
          <themekt>
            NASA Global Change Master Directory (GCMD) Science Keywords
          </themekt>
          <themekey>
            EARTH SCIENCE &gt; Cryosphere &gt; Snow/Ice &gt; Lake Ice
          </themekey>
        </theme>
      </layrname>
      <layrname>
        <theme>
          <themekt>
            NASA Global Change Master Directory (GCMD) Science Keywords
          </themekt>
          <themekey>
            EARTH SCIENCE &gt; Cryosphere &gt; Snow/Ice &gt; River Ice
          </themekey>
        </theme>
      </layrname>
      <layrname>
        <theme>
          <themekt>
            NASA Global Change Master Directory (GCMD) Science Keywords
          </themekt>
          <themekey>
            EARTH SCIENCE &gt; Spectral/Engineering &gt; Visible Wavelengths &gt; Visible Imagery
          </themekey>
        </theme>
      </layrname>
      <layrname>
        <theme>
          <themekt>
            NASA Global Change Master Directory (GCMD) Science Keywords
          </themekt>
          <themekey>
            EARTH SCIENCE &gt; Terrestrial Hydrosphere &gt; Snow/Ice &gt; Lake Ice
          </themekey>
        </theme>
      </layrname>
      <layrname>
        <theme>
          <themekt>
            NASA Global Change Master Directory (GCMD) Science Keywords
          </themekt>
          <themekey>
            EARTH SCIENCE &gt; Terrestrial Hydrosphere &gt; Snow/Ice &gt; River Ice
          </themekey>
        </theme>
      </layrname>
    </thelayid>
    <accconst>
      None
    </accconst>
    <useconst>
      None
    </useconst>
    <ptcontac>
      <cntinfo>
        <cntperp>
          <cntper>
            NSIDC USER SERVICES
          </cntper>
        </cntperp>
        <cntaddr>
          <addrtype>
            mailing
          </addrtype>
          <address>
            User Services
          </address>
          <address>
            National Snow and Ice Data Center
          </address>
          <address>
            CIRES, 449 UCB
          </address>
          <address>
            University of Colorado
          </address>
          <city>
            Boulder
          </city>
          <state>
            CO
          </state>
          <postal>
            80309-0449
          </postal>
          <country>
            USA
          </country>
        </cntaddr>
        <cntvoice>
          +1 (303) 492-6199
        </cntvoice>
        <cntfax>
          +1 (303) 492-2468
        </cntfax>
        <cntemail>
          nsidc@nsidc.org
        </cntemail>
      </cntinfo>
    </ptcontac>
  </idinfo>
  <distinfo>
    <distrib>
      <cntinfo>
        <cntorgp>
          <cntorg>
            National Oceanic and Atmospheric Administration
          </cntorg>
          <cntper>
            NSIDC NOAA USER SERVICES
          </cntper>
        </cntorgp>
        <cntaddr>
          <addrtype>
            mailing
          </addrtype>
          <address>
            National Snow and Ice Data Center
          </address>
          <address>
            CIRES, 449 UCB
          </address>
          <address>
            University of Colorado
          </address>
          <city>
            Boulder
          </city>
          <state>
            CO
          </state>
          <postal>
            80309-0449
          </postal>
          <country>
            USA
          </country>
        </cntaddr>
        <cntvoice>
          +1 (303) 492-6199
        </cntvoice>
        <cntfax>
          +1 (303) 492-2468
        </cntfax>
        <cntemail>
          nsidc@nsidc.org
        </cntemail>
      </cntinfo>
    </distrib>
    <resdesc>
      G00494
    </resdesc>
    <distliab>
      NSIDC cannot assume liability for any damages caused by any errors or omissions in the data, nor as a result of the failure of the data to function on a particular system. NSIDC makes no warranty, expressed or implied, nor does the fact of distribution constitute such a warranty.
    </distliab>
  </distinfo>
  <metainfo>
    <metd>
      20070822
    </metd>
    <metrd>
      20011004
    </metrd>
    <metc>
      <cntinfo>
        <cntperp>
          <cntper>
            NSIDC NOAA USER SERVICES
          </cntper>
          <cntorg>
            National Oceanic and Atmospheric Administration
          </cntorg>
        </cntperp>
        <cntaddr>
          <addrtype>
            mailing
          </addrtype>
          <address>
            National Snow and Ice Data Center
          </address>
          <address>
            CIRES, 449 UCB
          </address>
          <address>
            University of Colorado
          </address>
          <city>
            Boulder
          </city>
          <state>
            CO
          </state>
          <postal>
            80309-0449
          </postal>
          <country>
            USA
          </country>
        </cntaddr>
        <cntvoice>
          +1 (303) 492-6199
        </cntvoice>
        <cntfax>
          +1 (303) 492-2468
        </cntfax>
        <cntemail>
          nsidc@nsidc.org
        </cntemail>
      </cntinfo>
    </metc>
    <metstdn>
      FGDC Content Standard for Digital Geospatial Metadata: Extensions for Remote Sensing Metadata
    </metstdn>
    <metstdv>
      FGDC-STD-012-2002
    </metstdv>
  </metainfo>
  
  
  
  
  
  
</metadata>
