High Resolution Imagery of Nikunau Island Coral Reef Systems Prior to and During Suspected Bleaching Events

Chris Elvidge National Oceanic and Atmospheric Administration (NOAA) / National Geophysical Data Center (NGDC) 325 Broadway Boulder CO 80305 200908 High Resolution Imagery of Nikunau Island Coral Reef Systems Prior to and During Suspected Bleaching Events Remote-sensing image http://www.ngdc.noaa.gov/dmsp/coral/index.html This dataset is a collection of imagery of Nikunau Island coral reef systems. They are pairs of imagery where one image was acquired during a suspected bleaching event. The second is a control image taken at some point prior to the event. The images are co-located and radiometrically calibrated for comparison. The difference images are analyzed for evidence of bleaching. Additional information on methodology can be found here: http://www.ngdc.noaa.gov/dmsp/coral/methodology.html These data were analyzed with the purpose of developing a semi-automated quantitative measure of coral reef bleaching. 20030725 20041030 20041117 Ground Condition Complete None Nikunau Island in the Kiribati Islands in the Pacific. 176.45 176.5 -1.37 -1.42 CoRIS Theme Thesaurus EARTH SCIENCE > Biosphere > Zoology > Corals > Reef Monitoring and Assessment > Mapping > Base map > Satellite Imagery ISO 19115 Topic Category imageryBaseMapsEarthCover 010 CoRIS Discovery Thesaurus Visual Images > Corals CoRIS Place Thesaurus OCEAN BASIN > Pacific Ocean > Central Pacific Ocean > Kiribati > Kiribati ( Gilbert Islands ) (02S170W0000) COUNTRY/TERRITORY > Kiribati > Kiribati ( Gilbert Islands ) (02S170W0000) None None http://www.ngdc.noaa.gov/dmsp/coral/images/kirbatiM/KIRm_030725_ref.png Quickbird image of Nikunau Island PNG NOAA, National Geophysical Data Center Chris Elvidge Physical

325 Broadway

Boulder CO 80305 303-497-6121 Downloadable Data NOAA makes no warranty regarding these data, expressed or implied, nor does the fact of distribution constitute such a warranty. NOAA and NODC cannot assume liability for any damages caused by any errors or omissions in these data, nor as a result of the failure of these data to function on a particular system. JPEG http://www.ngdc.noaa.gov/dmsp/coral/index.html None 20101108 20090806 NOAA, National Geophysical Data Center Chris Elvidge Physical

325 Broadway

Boulder CO 80305 303-497-6121 FGDC Content Standard for Digital Geospatial Metadata FGDC-STD-001-1998 20090806125758 None 20030725 20041117 http://www.coris.noaa.gov/metadata/records/html/ngdc_nikunau_island_coral_reef_metadata.html 2765