39391 molokai_accuracy_asses Data Set Published / External 37185 Hawaii_2000 Project Completed 2002-05-24 This project is a cooperative effort among the National Ocean Service, National Centers for Coastal Ocean Science, Center for Coastal Monitoring and Assessment; the University of Hawaii; and Analytical Laboratories of Hawaii, LLC. The goal of the work was to develop coral reef mapping methods and compare benthic habitat maps generated by photointerpreting georeferenced color aerial photography, hyperspectral and IKONOS satellite imagery. The cost effectiveness of acquisition and processing of remotely sensed imagery varies significantly between types of platforms deployed and imaging systems used to acquire the data. As a result, it is important to identify the strengths and weaknesses of the map products prepared from each of the types of digital imagery. These Accuracy Assessment point data were generated to assess the accuracy of the individual maps created from the three types of source information.Testing showed that the ability to generate benthic habitat maps with an overall accuracy of 90% to 95% confidence interval is reaching a threshold using imagery with three meter pixel size allowing for spectral enhancement of the imagery with reduced resolution. Increasing the intensity of field observation can partially compensate for this decrease in accuracy of the maps generated from the largest pixels. Habitat maps prepared from IKONOS satellite imagery should be accompanied by field observation wherever possible. The National Ocean Service is conducting research to digitally map biotic resources and coordinate a long-term monitoring program that can detect and predict change in U.S. coral reefs, and their associated habitats and biological communities. The goal of the work was to develop coral reef mapping methods and compare benthic habitat maps generated by photointerpreting georeferenced color aerial photography, hyperspectral and IKONOS satellite imagery. These Accuracy Assessment point data were generated to assess the accuracy of the individual maps created from the three types of source information. 403 Theme ISO 19115 Topic Category environment Theme ISO 19115 Topic Category oceans Theme Point Theme Submerged aquatic vegetation Theme coral reef Theme coralline algae Theme environmental monitoring Theme habitat Theme oceans Theme reef Theme unconsolidated sediments Theme zone Spatial Hawaii Spatial Molokai Spatial U.S. Exclusive Economic Zone Spatial United States National Centers for Coastal Ocean Science Silver Spring MD Data Set None Planned map The National Oceanic and Atmospheric Administration (NOAA) National Centers for Coastal Ocean Science (NCCOS) produced this data CD-ROM. NCCOS Biogeography Program does not guarantee the accuracy of the geographic features or attributes. Please see the metadata records for each data set for complete information on the source, limitations, and proper use. 41338 utm_zone_4_aa.dbf Published / External Completed Shapefile Attribute Table | Description Source: software defined Converted from FGDC using 'fgdc_to_inport_xml_entity.pl' script. 1 Test_area Unknown No No Active Benthic habitat accuracy assessment test region. | Description Source: User Defined Character Field 2 Area_1_hab Unknown No No Active Most common major habitat in survey area. | Description Source: User Defined Character Field 3 Area_1_mod Unknown No No Active Modifier of most common major habitat in survey area. | Description Source: User Defined Character Field 4 Area2 Unknown No No Active Second most common major habitat in survey area. | Description Source: User Defined Character Field 5 Data_type Unknown No No Active Accuracy Assessment | Description Source: User Defined Character Field 6 Site_id Unknown No No Active Unique Site ID | Description Source: User defined Character Field 7 Gps_date Unknown No No Active Date | Description Source: GPS data logger Character Field (YYYYMMDD) 8 Gps_time Unknown No No Active Time | Description Source: GPS data logger Character Field 9 Depth_ft NUMBER No No Active Depth in feet | Description Source: GPS data logger 0 - 91 10 Uw_assessm Unknown No No Active Habitat assessment method | Description Source: GPS data logger Character Field 11 Zone Unknown No No Active Name of biological zone at each way point | Description Source: Benthic Habitats of the Main Hawaiian Islands Character Field 12 Unconsolid Unknown No No Active Major habitat type | Description Source: Benthic Habitats of the Main Hawaiian Islands Character Field 13 Seagrass Unknown No No Active Second level habitat type | Description Source: Benthic Habitats of the Main Hawaiian Islands Character Field 14 Fleshy_mac Unknown No No Active Second level habitat type | Description Source: Benthic Habitats of the Main Hawaiian Islands Numeric Field 15 Coral_reef Unknown No No Active Major habitat type | Description Source: Benthic Habitats of the Main Hawaiian Islands Character Field 16 Uncol_hard Unknown No No Active Second level habitat type | Description Source: Benthic Habitats of the Main Hawaiian Islands Character Field 17 Encrust_co Unknown No No Active Second level habitat type | Description Source: Benthic Habitats of the Main Hawaiian Islands Character Field 18 Other Unknown No No Active Major habitat type | Description Source: Benthic Habitats of the Main Hawaiian Islands Character Field 19 Northing Unknown No No Active Geographic Position | Description Source: GPS data logger Numeric Field 20 Easting Unknown No No Active Geographic position | Description Source: GPS data logger Numeric Field 21 Max_pdop Unknown No No Active Measure of positional strength of GPS satellite configuration | Description Source: GPS data logger Numeric Field 22 Std_dev Unknown No No Active Position precision | Description Source: GPS data logger Numeric Field 23 Horz_prec Unknown No No Active Horizontal precision | Description Source: GPS data logger Numeric Field 24 Point Unknown No No Active GIS Feature Type | Description Source: GPS data logger Character Field 25 Comments Unknown No No Active Habitat notes | Description Source: User defined Character Field Data Steward 2002-05-24 Position NCCOS Scientific Data Coordinator NCCOS.data@noaa.gov Distributor 2002-05-24 Position NCCOS Scientific Data Coordinator NCCOS.data@noaa.gov Metadata Contact 2002-05-24 Position NCCOS Scientific Data Coordinator NCCOS.data@noaa.gov Point of Contact 2002-05-24 Position NCCOS Scientific Data Coordinator NCCOS.data@noaa.gov Principal Investigator 2002-05-24 Person Battista, Tim tim.battista@noaa.gov Ground Condition -157.149639 -157.023816 21.101853 21.079843 Range 2001 2002 Unclassified None Not for navigation https://coastalscience.noaa.gov/datasets/ccma/biogeo/hawaii/aap/molokai_aa.zip Downloadable Data Shapefile Shapefile https://ccma.nos.noaa.gov/products/biogeography/hawaii_cd/data/ Online Resource https://coastalscience.noaa.gov/datasets/ccma/biogeo/hawaii/aap/molokai_aa.zip Online Resource 2013-10-30 Date that the source FGDC record was last modified. 2017-04-05 Converted from FGDC Content Standards for Digital Geospatial Metadata (version FGDC-STD-001-1998) using 'fgdc_to_inport_xml.pl' script. Contact Tyler Christensen (NOS) for details. 2017-11-01 Replaced entire Lineage section to populate new Source Contribution field. 2018-02-08 Partial upload of Positional Accuracy fields only. Microsoft Windows 2000 Version 5.0 (Build 2195) Service Pack 3; ESRI ArcCatalog 8.2.0.700 The points in this thematic data were acquired by GPS using a Trimble GeoExplorer 3 with a customized data dictionary designed to reflect the NOAA Classification Scheme for Benthic Habitats of the Main Eight Hawaiian Islands. All habitat determinations were made in the field, recorded in the GPS data logger and seamlessly transferred to ArcView GIS using Trimble Path Finder Office Software. Point accuracy was determined by three tests producing circular RMS statistic. Point GPS data were acquired by repeated occupation a fixed point yielding a 95% sigma RMS of 2 meters compared to the position mean. Replicate GPS positions were collected after navigating to a way point by boat yielding RMS value of 5 meters. Registered monuments were occupied and replicate positions collected yielding an RMS value of 3 meters. Thus, all point features in these accuracy assessment data are at least 95% sigma of 5 meters. Data are complete. Habitat attributes are determined by direct observation in the field. These data are considered truth at the time of collection. Habitat types are subject to change over time due to population dynamics of the dominant biological communities. To maintain objectivity in the analysis of accuracy, an independent team conducted the field assessments. The Coral Reef Assessment and Monitoring Program (CRAMP) team made all benthic habitat decisions independent of the Analytical Laboratories of Hawaii (ALH) contractor. Furthermore, the CRAMP team independently conducted the assessment of the extent to which the photointerpretation met the field assessment determinations. These data were then used to prepare the statistical contrasts of the accuracy of the maps for each of the test areas for each of the image types.Due to an unusually stormy winter in the Central Pacific during the 2001 to 2002 season, multiple attempts to acquire accuracy assessment data for the Molokai test area were required. Two field missions were planned to collect these data. Due to failed field missions resulting from poor weather; eight field missions were executed to complete this work.During the month of November 2002, an unusually powerful storm occurred in the Hawaiian Islands. Extensive flooding, road closures and power outages were experienced. The intense rain fall, after 15 years of near drought conditions in the Hawaiian Islands, resulted in unprecedented mud inundation on the east end on the study area in Molokai. The influx of sediment from the November storm and the series of storms that followed over the next six months made this area inaccessible for the entire project period.As the types of habitats on the east end of the Molokai test area are very similar to those on the west end of the test area, the density of accuracy assessment points was increased on the west end to compensate for the reduced density of the east end. With the exception of the mud inundation on the reef at Molokai, the remainder of the acquisition of field accuracy assessment data proceeded flawlessly. Classification Scheme for Benthic Habitats: Main Eight Hawaiian Islands M.S. Coyne 2001-05-11 Continuing 2001-05-11 https://ccma.nos.noaa.gov/products/biogeography/hawaii_cd/htm/manual.pdf This document identifies the zone and habitat types attributed in the GIS data. | Source Geospatial Form: document | Type of Source Media: publication Random Point Generator Jeff Henness 2001-06-15 Discrete 2001-06-15 http://arcscripts.esri.com/details.asp?dbid=11605 Random points were generated to test the accuracy of benthic habitat maps. | Type of Source Media: Software 1 After photointerpretation was complete, the polygons representing detailed habitats were aggregated into major classes and at least 50 random geographically referenced points were created in each. This was done using a random point generator program obtained from the ESRI website, which randomly generates points inside an ArcView GIS polygon. Waypoint files were generated from these points and all waypoints, which could be safely accessed, were navigated to using a Trimble GeoExplorer 3 GPS data logger and habitat data was acquired by a team of CRAMP biologists. 2002-01-01T00:00:00 Random Point Generator 41338 Entity gov.noaa.nmfs.inport:39391 Tyler Christensen 2017-04-05T12:52:16 SysAdmin InPortAdmin 2025-05-15T19:16:13 2018-02-08 National Centers for Coastal Ocean Science NCCOS 1002 Public No No 2018-02-08 1 Year 2019-02-08