20230605
21033200
1.0
FALSE
002
slr_cstl_erosn_line_1_pt_1_ft
418746.237500
775010.768900
2282837.161300
2458271.003300
1
0.000
Projected
GCS_North_American_1983_HARN
Linear Unit: Meter (1.000000)
NAD_1983_HARN_UTM_Zone_4N
<ProjectedCoordinateSystem xsi:type='typens:ProjectedCoordinateSystem' xmlns:xsi='http://www.w3.org/2001/XMLSchema-instance' xmlns:xs='http://www.w3.org/2001/XMLSchema' xmlns:typens='http://www.esri.com/schemas/ArcGIS/10.8'><WKT>PROJCS["NAD_1983_HARN_UTM_Zone_4N",GEOGCS["GCS_North_American_1983_HARN",DATUM["D_North_American_1983_HARN",SPHEROID["GRS_1980",6378137.0,298.257222101]],PRIMEM["Greenwich",0.0],UNIT["Degree",0.0174532925199433]],PROJECTION["Transverse_Mercator"],PARAMETER["False_Easting",500000.0],PARAMETER["False_Northing",0.0],PARAMETER["Central_Meridian",-159.0],PARAMETER["Scale_Factor",0.9996],PARAMETER["Latitude_Of_Origin",0.0],UNIT["Meter",1.0],AUTHORITY["EPSG",3750]]</WKT><XOrigin>-5120900</XOrigin><YOrigin>-9998100</YOrigin><XYScale>10000</XYScale><ZOrigin>-100000</ZOrigin><ZScale>10000</ZScale><MOrigin>-100000</MOrigin><MScale>10000</MScale><XYTolerance>0.001</XYTolerance><ZTolerance>0.001</ZTolerance><MTolerance>0.001</MTolerance><HighPrecision>true</HighPrecision><WKID>102202</WKID><LatestWKID>3750</LatestWKID></ProjectedCoordinateSystem>
150000000
5000
20230624
12383900
20230624
12383900
ISO19139
dataset
Charles Fletcher
University of Hawaii SOEST
Professor
1680 East West Rd
Honolulu
HI
96822
fletcher@soest.hawaii.edu
US
808.956.2582
808.956.5512
Charles Fletcher
20230624
File Geodatabase Feature Class
0.000
slr_cstl_erosn_line_1_pt_1_ft
Charles Fletcher
University of Hawaii SOEST
Professor
1680 East West Rd
Honolulu
HI
96822
fletcher@soest.hawaii.edu
US
808.956.2582
808.956.5512
<DIV STYLE="text-align:Left;"><DIV><DIV><P><SPAN>The erosion hazard line is a spatial depiction of the landward extent of the erosion hazard zone, lands falling within a zone with a certain likelihood (80%) of exposure to erosion, according to probabilistic modeling. This erosion hazard zone is a spatial depiction of lands that are estimated to be vulnerable to erosion by the specified year. The hazard zone is not meant to be a prediction of the exact lands that will be eroded in the future, nor is it a specific prediction of where the shoreline will be in the future. The erosion hazard line includes portions of shoreline where the 80th percentile probability (hazard line) falls seaward of the modern vegetation line, representing possible beach growth. </SPAN></P><P><SPAN>Future coastal change is projected following Anderson et al. (2015), in which historical shoreline trends are combined with projected accelerations in sea level rise (IPCC RCP 8.5). At each transect location (spaced 20 m apart), the 80th percentile of the projected vegetation line (higher percentiles are more landward) is used as the inland extent of the projected erosion hazard zone for the specified year. This inland extent is connected with the coastline (zero-elevation contour, mean sea level) to create polygons depicting erosion hazard zones. </SPAN></P><P><SPAN>The projected shoreline change rate is the estimated long-term trend for the shoreline that is likely located somewhere within the hazard zone (unless the shoreline has high rates of historical advance). The exact location of a future shoreline, however, is not shown within an erosion hazard zone. </SPAN></P><P><SPAN>Prior versions of the erosion hazard polylines were transformed (reprojected) incorrectly into the NAD83(HARN) datum. This update, dated June, 2023 represents files correctly transformed into the NAD83(HARN) datum. Metadata was modified to describe the polyline layers and to reference the University of Hawaii School of Ocean and Earth Science Climate Research Collaborative (CRC) as the data source for the layers, replacing older references to the UH SOEST Coastal Geology Group. This represents a subversion release: no modeling was performed to provide or change future hazard zone or line positions or extents.</SPAN></P><P><SPAN>This product/data is funded in part by the Hawaii Office of Planning, Coastal Zone Management Program, pursuant to National Oceanic and Atmospheric Administration Award No. NA17NOS4190171, funded in part by the Coastal Zone Management Act of 1972, as amended, administered by the Office for Coastal Management, National Ocean Service, National Oceanic and Atmospheric Administration, United States Department of Commerce. These data and related items of information have not been formally disseminated by NOAA, and do not represent any agency determination, view, or policy.</SPAN></P></DIV></DIV></DIV>
This data is a portion of a larger project to compile shoreline change data and model future shoreline change of the islands of Kauai, Oahu, and Maui. Sandy ocean beaches are a popular recreational destination, often surrounded by communities containing valuable real estate. Development is on the rise despite the fact that coastal infrastructure is subjected to flooding and erosion. As a result, there is an increased demand for accurate information regarding past and present shoreline positions and to quantify shoreline change through time.
Hawaii
Oahu
modeled erosion hazard zone
land
vulnerable
future shoreline change
University of Hawaiʻi at Mānoa
Climate Resilience Collaborative (CRC) School of Ocean and Earth Science and Technology
Coastal Zone Management Program (CZM)
National Oceanic and Atmospheric Administration (NOAA)
Charles Fletcher
University of Hawaii SOEST
Professor
1680 East West Rd
Honolulu
HI
96822
fletcher@soest.hawaii.edu
US
808.956.2582
808.956.5512
Charles Fletcher
Version 6.2 (Build 9200) ; Esri ArcGIS 10.9.1.28388
1
-159.788432
-156.332490
22.229873
20.624629
295
EPSG
6.13(10.0.0)
slr_cstl_erosn_line_1_pt_1_ft
Feature Class
295
OBJECTID
OBJECTID
OID
4
0
0
Internal feature number.
Esri
Sequential unique whole numbers that are automatically generated.
Shape
Shape
Geometry
0
0
0
Feature geometry.
Esri
Coordinates defining the features.
Island
Island
String
254
0
0
Shape_Length
Shape_Length
Double
8
0
0
Length of feature in internal units.
Esri
Positive real numbers that are automatically generated.
Simple
FALSE
295
TRUE
FALSE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==