2013 scgis presentation

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  • https://www.google.com/search?hl=en&q=University+of+South+Carolina+Presentation+emblem&bav=on.2,or.r_gc.r_pw.r_qf.&bvm=bv.42080656,d.eWU&biw=1280&bih=806&um=1&ie=UTF-8&tbm=isch&source=og&sa=N&tab=wi&ei=KVYVUe_pJoHq8gSfiYCgDQ#imgrc=dcN5fuuzR-Ch7M%3A%3BQXPkUjHuofA0PM%3Bhttp%253A%252F%252Fupload.wikimedia.org%252Fwikipedia%252Fen%252F1%252F1a%252FNew_University_of_South_Carolina_Logo.png%3Bhttp%253A%252F%252Fblog.cathyjonelson.com%252F%3B1236%3B705
  • Stedman, S. and T.E. Dahl. 2008. Status and trends of wetlands in the coastal watersheds of the Eastern United States 1998 to 2004. National Oceanic and Atmospheric Administration, National Marine Fisheries Service and U.S. Department of the Interior, Fish and Wildlife Service. (32 pages)Morris et al. 2002. Responses of Coastal Wetlands to Rising Sea Level. Ecology 83(10):2869-2877
  • https://www.google.com/search?hl=en&sugexp=les%3B&gs_rn=2&gs_ri=hp&pq=nwi&cp=13&gs_id=ud&xhr=t&q=national+wetlands+inventory&bav=on.2,or.r_gc.r_pw.r_qf.&bvm=bv.42080656,d.eWU&biw=1280&bih=806&um=1&ie=UTF-8&tbm=isch&source=og&sa=N&tab=wi&ei=FFkVUcSmCYTc9AS4s4HAAQ#imgrc=tLk6ztvmTokaGM%3A%3BDKZZCLAxljZyqM%3Bhttp%253A%252F%252Fwww.wfrpc.org%252Ffiles%252F0000%252F0481%252FNationalWetlandsInventory_normal.jpg%3Bhttp%253A%252F%252Fwww.wfrpc.org%252Fstatewide-and-national-maps-online%3B250%3B46http://ned.usgs.gov/Gesch, D.B., 2007, Chapter 4 – The National Elevation Dataset, in Maune, D., ed.,Digital Elevation Model Technologies and Applications: The DEM Users Manual, 2ndEdition: Bethesda, Maryland, American Society for Photogrammetry and RemoteSensing, p. 99-118.http://www.csc.noaa.gov/digitalcoast/http://www.google.com/imgres?imgurl=http://www.meted.ucar.edu/tsunami/warningsystem/media/graphics/tide_gauge.jpg&imgrefurl=http://www.meted.ucar.edu/tsunami/warningsystem/print.htm&h=420&w=320&sz=133&tbnid=MRol8kS6xnSXJM:&tbnh=91&tbnw=69&zoom=1&usg=__-8sa8lLyl52BOnZhmyOsCLmafFQ=&docid=Uv-wHG-KLtWivM&hl=en&sa=X&ei=qUQUUfK-Icbw0QHrjoDgCQ&sqi=2&ved=0CEIQ9QEwBA&dur=539https://www.google.com/search?hl=en&q=Does+not+equal&bav=on.2,or.r_gc.r_pw.r_qf.&biw=1280&bih=806&um=1&ie=UTF-8&tbm=isch&source=og&sa=N&tab=wi&ei=7kQUUavJAqaW0QHD_YDwBg#imgrc=cMC0m0AfwMVFgM%3A%3BcIHgGQhKtqEvcM%3Bhttp%253A%252F%252Fthecomedypoint.com%252Fwp-content%252Fuploads%252F2012%252F09%252Fall-things-are-not-equal-in-the-eb5-visa-world.jpg%3Bhttp%253A%252F%252Fthecomedypoint.com%252F2012%252F09%252F19%252Fequal-2%252F%3B250%3B250https://www.google.com/search?hl=en&q=Natinal+Elevation+Dataset&bav=on.2,or.r_gc.r_pw.r_qf.&biw=1280&bih=806&um=1&ie=UTF-8&tbm=isch&source=og&sa=N&tab=wi&ei=LEUUUarnGrOq0AHxsoHYDQ#imgrc=KbrWwJrzVDAwuM%3A%3BHeR9tfRXUKHFpM%3Bhttp%253A%252F%252Fegsc.usgs.gov%252Fisb%252Fpubs%252Ffactsheets%252Ffs14899.graphics%252Fsmallus.jpg%3Bhttp%253A%252F%252Fegsc.usgs.gov%252Fisb%252Fpubs%252Ffactsheets%252Ffs14899.html%3B300%3B189
  • http://www.ecodonet.gr/morphology_curve_english_2.phpStedman, S. and T.E. Dahl. 2008. Status and trends of wetlands in the coastal watersheds of the Eastern United States 1998 to 2004. National Oceanic and Atmospheric Administration, National Marine Fisheries Service and U.S. Department of the Interior, Fish and Wildlife Service.
  • 2013 scgis presentation

    1. 1. Assessing the Stability of theNation’s Coastal WetlandsJames EdwardsUniversity of South CarolinaMarine Science Program
    2. 2. Outline• Purpose• Data• Methods• Results• Discussion/Conclusion
    3. 3. Purpose• Coastal watersheds of the eastern United States contained about 11percent of the total land area in the lower 48 states and 38 percentof the wetlands by area. Yet these coastal areas experiencedroughly the same amount of wetland loss from 1998 to 2004 asoccurred in the entire conterminous United States in the 1990s.(Stedman and Dahl 2008)• Wetland Loss• RSLR, productivity, sedimentation, recently eutrophication• Stability• Can we identify stability patterns across differentregions from the best available data?Morris et al. 2002. Responses of Coastal Wetlands toRising Sea Level. Ecology 83(10):2869-2877
    4. 4. Data and tools• NWI• National Coverage, temporal trade-off• USGS NED• Data coverage and error (2.44m; Gesch 2007)• Tide gauges and VDatum
    5. 5. Methods• NWI• Extraction of coastal intertidal wetland• NED Processing• 3x3 low pass• MSL?• Rivers and tidal creeks?– USGS high resolution hydrography data• MHW
    6. 6. Methods• Normalize to MHW• Forces data to be relative to MHW• Clip to NWI• Reclassify• Floating point vs. integer• Hypsometric curve and integrals• Plot normalized elevations vs. percentMorris et al. 2002. Responses of Coastal Wetlands toRising Sea Level. Ecology 83(10):2869-2877
    7. 7. Results00.10.20.30.40.50.60.70.80.910 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1NormalElevation(Unitless,0=MSL)Cumulative PercentGulf (0.60083)SE (0.376)MA (0.373115)NE (0.312548)W (0.599563)
    8. 8. Conclusion• How do weinterpret thesetrends?• Are they realisticgiven what weknow?• Hypothesizedunderlyingprocesses• Invasion, tidal creeknetworkexpansion/evolution, platformcollapse, keeping pace00.10.20.30.40.50.60.70.80.910 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1NormalElevation(Unitless,0=MSL)Cumulative PercentGulf (0.60083)SE (0.376)MA (0.373115)NE (0.312548)W (0.599563)Stedman and Dahl 2008www.ecodonet.gr

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