Impervious Surfaces Oahu, Hawaii 2006

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Metadata:

Identification_Information:
Citation:
Citation_Information:
Originator:
Department of Commerce (DOC), National Oceanic and Atmospheric Administration (NOAA), National Ocean Service (NOS), Coastal Services Center (CSC)
Publication_Date: 20070512
Title: Impervious Surfaces Oahu, Hawaii 2006
Geospatial_Data_Presentation_Form: remote-sensing image
Publication_Information:
Publication_Place: Charleston, SC
Publisher: NOAA's Ocean Service, Coastal Services Center (CSC)
Online_Linkage: <http://www.csc.noaa.gov/digitalcoast/>
Description:
Abstract:
This is a final impervious surface layer ready for distribution through NOAA CSC. The data set is an inventory of impervious surfaces for the island of Oahu, Hawaii for the year 2006. Impervious surfaces prevent infiltration of precipitation into the soil, disrupting the water cycle and affecting both the quantity and quality of water resources. Impervious surfaces include manmade features such as building rooftops, parking lots and roads consisting of asphalt, concrete and/or compacted dirt. This data set utilized 29 full or partial Quickbird multispectral scenes which were processed to detect impervious features on the island of Oahu.
Purpose:
To create a baseline inventory of impervious surfaces which can be utilized by state and local resource managers to assess the impacts precipitation events on water quality and flooding.
Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 20051231
Currentness_Reference: Acquisition date of the Quickbird Scenes
Status:
Progress: Complete
Maintenance_and_Update_Frequency: 5 years
Spatial_Domain:
Bounding_Coordinates:
West_Bounding_Coordinate: -158.287540
East_Bounding_Coordinate: -157.625001
North_Bounding_Coordinate: 21.714256
South_Bounding_Coordinate: 21.243775
Keywords:
Theme:
Theme_Keyword_Thesaurus: CoRIS Theme Thesaurus
Theme_Keyword: EARTH SCIENCE > Biosphere > Aquatic Habitat > Coastal Habitat
Theme_Keyword:
EARTH SCIENCE > Biosphere > Zoology > Corals > Reef Monitoring and Assessment > Mapping
Theme_Keyword:
EARTH SCIENCE > Biosphere > Zoology > Corals > Reef Monitoring and Assessment > Remote Sensing
Theme:
Theme_Keyword_Thesaurus: CoRIS Discovery Thesaurus
Theme_Keyword: Geographic Information > Habitats
Theme:
Theme_Keyword_Thesaurus: ISO 19115 Topic Category
Theme_Keyword: imageryBaseMapsEarthCover
Theme_Keyword: 010
Theme:
Theme_Keyword_Thesaurus: None
Theme_Keyword: Remotely Sensed Imagery/Photos
Theme_Keyword: Land Cover Analysis
Theme_Keyword: Impervious
Place:
Place_Keyword_Thesaurus: None
Place_Keyword: Coastal Zone
Place_Keyword: Hawaii
Place_Keyword: Oahu
Place_Keyword: Honolulu County
Place:
Place_Keyword_Thesaurus: CoRIS Region
Place_Keyword: MHI
Place:
Place_Keyword_Thesaurus: CoRIS Place Thesaurus
Place_Keyword:
OCEAN BASIN > Pacific Ocean > Central Pacific Ocean > Hawaiian Islands > Oahu Island > Oahu (21N157W0003)
Place_Keyword:
COUNTRY/TERRITORY > United States of America > Hawaii > Honolulu > Oahu (21N157W0003)
Access_Constraints: None
Use_Constraints:
Data set is not for use in litigation. While efforts have been made to ensure that these data are accurate and reliable within the state of the art, NOAA, cannot assume liability for any damages, or misrepresentations, caused by any inaccuracies in the data, or as a result of the data to be used on a particular system. NOAA makes no warranty, expressed or implied, nor does the fact of distribution constitute such a warranty.
Native_Data_Set_Environment:
Microsoft Windows XP Version 5.1 (Build 2600) Service Pack 2; ESRI ArcCatalog 9.1.0.780
Data_Quality_Information:
Attribute_Accuracy:
Attribute_Accuracy_Report:
Treating the map as a binary or single class scheme, impervious/pervious, allows for a simpler sampling technique than a traditional thematic land cover assessment. For this product, Sanborn developed an efficient procedure to assess accuracy of the impervious classification. The desired accuracy is at least 85% for the impervious/pervious map of Oahu. The approach described here tested the map for an accuracy of 90% for a MMU of 0.06 acre. Since Sanborn was working with a two-case situation they only needed to know whether the classification was right or wrong, a binomial distribution was used to calculate the sample size. Using that assumption, Sanborn used Ginevan (1979) who illustrated a sampling method using stratified random points that satisfies three criteria: 1. The scheme should have a low probability of accepting a map of low accuracy. 2. It should have a high probability of accepting a map of high accuracy. 3. It should require a minimum number of ground truth samples. Using the look-up table given in the paper that presents the required sample size for a given minimum error and a desired level of confidence, Sanborn determined the specific number of points that are required to meet the accuracy specification. To validate a map to determine if it meets a thematic accuracy of 90%, with a 95% confidence level (a 95% confidence interval means the chance of 1 in 20 of rejecting a map that is actually correct), the minimum number of sites required was 298; with the map being rejected if more than 21 are misclassified. In order to compensate for the rarity of impervious surfaces over a large portion of the Oahu landscape, the approach was to create 3 strata layers in order to limit the selection process to areas of likely impervious, and produce a map that accurately assesses the usefulness of the map to the user. Strata 1: Impervious Features This strata layer is based on the actual classification of impervious features. Strata 2: Distance buffer from impervious map The presence of impervious surfaces are correlated with other impervious features, and are likely to occur near other impervious features. A distance map based on a buffer of 250 m will be used to sample from. Strata 3: Remaining un-sampled area. Each of the strata was sampled to build an assessment database that exceeds the required minimum of 298 assessment points. The goal for the division of accuracy assessment points was an approximate 50:50 (impervious:pervious) stratification. The break down is as follows. Table 1: Sampling breakdown based on strata layer. Strata Layer Percentage of Total Samples Target Number of Samples Impervious Classification 30 >149 Distance From Impervious feature Mask 25 >75 Remaining Un-sampled Area 25 >74 Areas of impervious or where impervious surfaces are expected were biased in the sampling structure. Once the samples are collected, labeling and quality control procedures were completed on the samples to create a final accuracy database. The result was a simplified confusion matrix where only two classes are categorized (Figure 2). An overall accuracy statement can be made by summing the correct accuracy locations and deriving a percentage relative to the total number of accuracy points. References Congalton, R.G., Kass Green 1999. Assessing the accuracy of remotely sensed data: principles and practices. CRC/Lewis Press, Boca Raton, FL. (In Press) Congalton, R. G. and R. D. Macleod. 1998. A quantitative comparison of change-detection algorithms for monitoring eelgrass from remotely sensed data. Photogrammetric Engineering and Remote Sensing. Vol. 64, No. 3, March 1998, pp. 207-216. Ginevan, M.E. 1979. Testing land-use map accuracy: another look. Photogrammetric Engineering and Remote Sensing, 45(10): 1371-1377.
Logical_Consistency_Report:
Tests for logical consistency indicate that all row and column positions in the selected latitude/longitude window contain data. Conversion and integration with vector files indicates that all positions are consistent with earth coordinates covering the same area. Attribute files are logically consistent.
Completeness_Report: Data set is complete.
Positional_Accuracy:
Horizontal_Positional_Accuracy:
Horizontal_Positional_Accuracy_Report: 12 meters CE90
Vertical_Positional_Accuracy:
Vertical_Positional_Accuracy_Report:
There was no terrain correction in the geo-referencing procedure.
Lineage:
Source_Information:
Source_Citation:
Citation_Information:
Originator: Sanborn. www.sanborn.com.
Publication_Date: 20070515
Title: C-CAP Oahu, Hawaii. Land Cover Project
Geospatial_Data_Presentation_Form: remote-sensing image
Publication_Information:
Publication_Place: Charleston SC
Publisher: NOAA's Ocean Service, Coastal Services Center (CSC)
Online_Linkage: <http://www.csc.noaa.gov/landcover>
Type_of_Source_Media: DVD/CD-ROM
Source_Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 20051231
Source_Currentness_Reference: Date of the Quickbird scenes
Source_Citation_Abbreviation: NOAA CSC
Source_Contribution: NOAA CSC
Process_Step:
Process_Description:
This dataset was created by the Sanborn Mapping Company. The impervious surface classification is based on Quickbird imagery. The study area for the project was the island of Oahu, U.S. Hawaiian Island Chain. Automated Classification: The first step in the classification methodology involved incorporating automated techniques. Sanborn analysts utilized the Feature Analyst software extension to extract impervious surfaces from the Quickbird imagery. This was performed by providing the software with photo-interpreted polygon examples which "train" the software's learning mechanism to recognize impervious surface features for extraction from the imagery. The software then provides the user with an automated output which can be accepted by the analyst or retrained for an improved result. This automated output captures a large percentage of the existing impervious surface features within the imagery but does not meet the required accuracy. Classes 0 - Pervious 1 - Impervious
Process_Date: 20061122
Process_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: CRS (Coastal Remote Sensing) Program Manager
Contact_Organization:
NOAA Coastal Services Center Coastal Change Analysis Program (C-CAP)
Contact_Position: CRS Program Manager
Contact_Address:
Address_Type: mailing and physical address
Address: 2234 S. Hobson Ave.
City: Charleston
State_or_Province: SC
Postal_Code: 29405
Country: USA
Contact_Voice_Telephone: 843-740-1210
Contact_Facsimile_Telephone: 843-740-1224
Contact_Electronic_Mail_Address: clearinghouse@noaa.gov
Hours_of_Service: 8:00 am to 5:00 p.m. EST. M-F
Process_Step:
Process_Description:
Manual editing and modeling: Errors or areas that could not be consistently extracted from the imagery were resolved using ancillary data sets or through manual edits. In some areas of the island, impervious surface features are obscured by clouds, shadows or tree canopy. For these types of issues Sanborn employed used ancillary data sources. 2004 USGS Orthophotography was used to capture impervious surfaces in cloud covered areas while the USGS DLG data for Hawaii was used to fill in missing secondary and compacted dirt roads. Due to spectral confusion between impervious surfaces and other features such as bare land. Manual editing was performed in Erdas Imagine to correct comission errors within the map. The same technique was used to capture missing impervious features that could not be derived from ancillary data sources.
Process_Date: 20070411
Process_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization:
NOAA Coastal Services Center Coastal Change Analysis Program (C-CAP)
Contact_Position: CRS Program Manager
Contact_Address:
Address_Type: mailing and physical address
Address: 2234 S. Hobson Ave.
City: Charleston
State_or_Province: SC
Postal_Code: 29405
Country: USA
Contact_Voice_Telephone: 843-740-1210
Contact_Facsimile_Telephone: 843-740-1224
Contact_Electronic_Mail_Address: csc@noaa.gov
Hours_of_Service: Monday to Friday, 8 a.m. to 5 p.m., Eastern Standard Time
Process_Step:
Process_Description: Metadata imported
Process_Date: 20070611
Process_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization:
NOAA Coastal Services Center Coastal Change Analysis Program (C-CAP)
Contact_Position: CRS Program Manager
Contact_Address:
Address_Type: mailing and physical address
Address: 2234 S. Hobson Ave.
City: Charleston
State_or_Province: SC
Postal_Code: 29405
Contact_Voice_Telephone: 843-740-1210
Contact_Facsimile_Telephone: 843-740-1224
Contact_Electronic_Mail_Address: csc@noaa.gov
Hours_of_Service: Monday to Friday, 8 a.m. to 5 p.m., Eastern Standard Time
Spatial_Data_Organization_Information:
Direct_Spatial_Reference_Method: Raster
Raster_Object_Information:
Raster_Object_Type: Pixel
Row_Count: 21511
Column_Count: 28459
Vertical_Count: 1
Spatial_Reference_Information:
Horizontal_Coordinate_System_Definition:
Planar:
Grid_Coordinate_System:
Grid_Coordinate_System_Name: Universal Transverse Mercator
Universal_Transverse_Mercator:
UTM_Zone_Number: 4
Transverse_Mercator:
Scale_Factor_at_Central_Meridian: 0.999600
Longitude_of_Central_Meridian: -159.000000
Latitude_of_Projection_Origin: 0.000000
False_Easting: 500000.000000
False_Northing: 0.000000
Planar_Coordinate_Information:
Planar_Coordinate_Encoding_Method: Row and Column
Coordinate_Representation:
Abscissa_Resolution: 2.400000
Ordinate_Resolution: 2.400000
Planar_Distance_Units: meters
Geodetic_Model:
Horizontal_Datum_Name: D_WGS_1984
Ellipsoid_Name: WGS_1984
Semi-major_Axis: 6378137.000000
Denominator_of_Flattening_Ratio: 298.257224
Entity_and_Attribute_Information:
Detailed_Description:
Entity_Type:
Entity_Type_Label: Layer_1
Entity_Type_Definition:
Island of Oahu delineated by Quickbird Scene(s) collected on December 31, 2005
Entity_Type_Definition_Source: unknown
Attribute:
Attribute_Label: Value
Attribute_Definition: 0 or 1 indicates whether pixel is impervious or not.
Attribute_Definition_Source: NOAA Coastal Services Center High-Resolution Land Cover Project
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: 0 Pervious
Enumerated_Domain_Value_Definition: Features which allow infiltration from precipitation.
Enumerated_Domain_Value_Definition_Source: NOAA Coastal Services Center High-Resolution Land Cover Project
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: 1 Impervious
Enumerated_Domain_Value_Definition:
Anthropogenic features such as buildings, parking lots and roads developed from asphalt, concrete or other constructed surfaces which do not allow infiltration from precipitation.
Enumerated_Domain_Value_Definition_Source: NOAA Coastal Services Center High-Resolution Land Cover Project
Distribution_Information:
Distributor:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: NOAA Coastal Services Center
Contact_Person: Clearinghouse Manager
Contact_Position: Clearinghouse Manager
Contact_Address:
Address_Type: mailing and physical address
Address: 2234 South Hobson Avenue
City: Charleston
State_or_Province: SC
Postal_Code: 29405-2413
Country: USA
Contact_Voice_Telephone: (843)740-1210
Contact_Facsimile_Telephone: (843)740-1224
Contact_Electronic_Mail_Address: clearinghouse@noaa.gov
Hours_of_Service: Monday-Friday, 8-5 EST
Resource_Description: Downloadable Data
Distribution_Liability:
Users must assume responsibility to determine the usability of these data.
Standard_Order_Process:
Digital_Form:
Digital_Transfer_Information:
Format_Name: ERDAS Imagine image file (.img)
File_Decompression_Technique: ESRI Run-length Encoding
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name:
<http://www.csc.noaa.gov/digitalcoast/data/coastal-change-analysis-program-high-resolution-land-cover/download>
Offline_Option:
Offline_Media: CD-ROM
Recording_Format: ISO 9660
Compatibility_Information:
ISO 9660 format allows the CD-ROM to be read by most computer operating systems.
Fees: none
Metadata_Reference_Information:
Metadata_Date: 20121208
Metadata_Review_Date: 20100216
Metadata_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: NOAA Coastal Services Center
Contact_Person: Metadata Specialist
Contact_Position: Metadata Specialist
Contact_Address:
Address_Type: mailing and physical address
Address: 2234 S Hobson Ave.
City: Charleston
State_or_Province: SC
Postal_Code: 29405
Country: USA
Contact_Voice_Telephone: 843-740-1210
Contact_Facsimile_Telephone: 843-740-1224
Contact_Electronic_Mail_Address: csc@noaa.gov
Hours_of_Service: 8:00 am to 5:00 pm EST.
Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata
Metadata_Standard_Version: FGDC-STD-001-1998
Metadata_Time_Convention: Local Time
Online_Linkage: <http://www.esri.com/metadata/esriprof80.html>
CoRIS:
CoRIS_ID: 20100216081053
CoRIS_Children: None
CoRIS_Beginning_Date: 20051231
CoRIS_Ending_Date: 20051231
CoRIS_Metadata_Link:
<http://www.coris.noaa.gov/metadata/records/html/ccap_2006_era_oahu_impervious_surf.html>
CoRIS_Tracking_ID: 4473
Generated by mp version 2.9.13 on Thu May 23 06:54:39 2013