slr_passive_fld_2_pt_0_ft

Metadata also available as

Metadata:

Identification_Information
Spatial_Data_Organization_Information
Spatial_Reference_Information
Entity_and_Attribute_Information
Distribution_Information
Metadata_Reference_Information

Identification_Information:

Citation:

Citation_Information:

Originator: University of Hawaii Coastal Geology Group (CGG)
Originator: Charles Fletcher
Publication_Date: 20171221
Title: slr_passive_fld_2_pt_0_ft
Geospatial_Data_Presentation_Form: vector digital data

Description:

Abstract:: Passive flooding was modeled by the University of Hawaii Coastal Geology Group using a modified "bathtub" approach following methods described in Cooper et al. 2013. The passive flooding model provides an initial assessment of low-lying areas susceptible to flooding by sea level rise. Passive flooding includes areas that are hydrologically connected to the ocean (marine flooding) and low-lying areas that are not hydrologically connected to the ocean (groundwater). Data used in modeling passive flooding include global sea level rise projections, digital elevation models (DEM), and the mean higher high water (MHHW) datum from local tide gauges. DEMs used in this study are freely available from NOAA and the U.S. Army Corps of Engineers (USACE). DEMs are derived from aerial light detection and ranging (LiDAR) data. The horizontal and vertical positional accuracies of the DEMs conform to flood hazard mapping standards of the Federal Emergency Management Agency (FEMA 2012). The IPCC AR5 RCP8.5 sea level rise scenario was used in modeling exposure to passive flooding from sea level rise at 0.5, 1.1, 2.0, and 3.2 feet. This particular layer depicts passive flooding using the 2.0-ft (0.5991-m) sea level rise scenario. While the RCP8.5 predicts that this scenario would be reached by the year 2075, questions remain around the exact timing of sea level rise and recent observations and projections suggest a sooner arrival. Passive flooding was modeled using the DEMs in geographic information systems software to identify areas below a certain sea level height (flooded by sea level rise) when raising water levels above current Mean Higher High Water (MHHW) tidal datum. In other words, water levels are shown as they would appear during MHHW, or the average higher high water height of each tidal day. The area flooded was derived by subtracting a tidal surface model from the DEM. Assumptions and Limitations: In many areas around the State, representing sea level rise from passive marine flooding will likely produce an underestimate of the area inundated or permanently submerged because the model does not account for waves and coastal erosion, important processes along Hawaii's highly dynamic coasts. For this reason, coastal erosion and annual high wave flooding (provided separately) are also modeled to provide a more comprehensive picture of the extent of hazard exposure. The passive flooding model does not explicitly include flooding through storm drain systems and other underground infrastructure, which would contribute to flooding in many low-lying areas identified in the model. The DEMs used in the modeling depict a smoothed topographic surface and do not identify basements, parking garages, and other development below ground that would be affected by marine and groundwater flooding with sea level rise. The passive flooding model is intended to provide an initial screening tool for sea level rise vulnerability. More detailed hydrologic and engineering modeling may be necessary to fully assess passive marine flooding hazards at the scale of individual properties. Data compiled by the Pacific Islands Ocean Observing System (PacIOOS) for the Hawaii Sea Level Rise Viewer hosted at <http://pacioos.org/shoreline/slr-hawaii/>. For further information, please see the Hawaii Sea Level Rise Vulnerability and Adaptation Report: <http://climateadaptation.hawaii.gov/wp-content/uploads/2017/12/SLR-Report_Dec2017.pdf>
Purpose:: Estimated extent of areas susceptible to passive flooding, modeled using a 2.0 foot sea level rise scenario.

Spatial_Domain:

Bounding_Coordinates:

West_Bounding_Coordinate: -159.789264
East_Bounding_Coordinate: -154.732117
North_Bounding_Coordinate: 22.232957
South_Bounding_Coordinate: 18.893005

Keywords:

Theme:

Theme_Keyword_Thesaurus: GCMD Science Keywords
Theme_Keyword:: Earth Science > Climate Indicators > Atmospheric/Ocean Indicators > Sea Level Rise > Inundation
Theme_Keyword: Earth Science > Human Dimensions > Environmental Impacts
Theme_Keyword: Earth Science > Oceans > Coastal Processes > Sea Level Rise
Theme_Keyword: Earth Science > Human Dimensions > Natural Hazards > Floods

Theme:

Theme_Keyword_Thesaurus: ISO 19115 Topic Categories
Theme_Keyword: oceans
Theme_Keyword: environment

Place:

Place_Keyword_Thesaurus: GCMD Location Keywords
Place_Keyword: Continent > North America > United States Of America > Hawaii
Place_Keyword:: Ocean > Pacific Ocean > Central Pacific Ocean > Hawaiian Islands

Access_Constraints: None

Use_Constraints:

Use Limitation: Based on the methodology of sea level rise modeling used in the Hawaii Sea Level Rise Vulnerability and Adaptation Report (Report) and the Hawaii Sea Level Rise Viewer (Viewer), having gone through peer review and publication in the Nature Journal Scientific Reports, the results of this study are sufficiently validated to be appropriately used in land management decisions as the best available information as of the date of publication of the Report, December 2017, consistent with the intent of Act 83 SLH 2014 as amended. This Report is intended to provide a state-wide assessment of Hawaii's vulnerability to sea level rise. The location of projected impacts and economic costs from damages are estimates based on a particular sea level rise scenario. The hazard and vulnerability data and maps provided herein are based on observational data and computer-based models as described in the Report and in published research (Anderson et al., 2018). As with all models, it is important to understand the methods, assumptions, limitations, and uncertainties of the methods used. The risks associated with use or non-use of the results are assumed by the user.

Point_of_Contact:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization: University of Hawaii Coastal Geology Group (CGG)
Contact_Person: Charles Fletcher

Contact_Voice_Telephone: Unknown

Contact_Electronic_Mail_Address: fletcher@soest.hawaii.edu

Browse_Graphic:

Browse_Graphic_File_Name:: <http://pacioos.org/metadata/browse/hi_hcgg_all_slr_flood_2075.png>
Browse_Graphic_File_Description: Sample image.
Browse_Graphic_File_Type: PNG

Data_Set_Credit: SOEST, UH CGG, PacIOOS

Native_Data_Set_Environment: Version 6.2 (Build 9200) ; Esri ArcGIS 10.6.1.9270

Spatial_Data_Organization_Information:

Direct_Spatial_Reference_Method: Vector

Point_and_Vector_Object_Information:

SDTS_Terms_Description:

SDTS_Point_and_Vector_Object_Type: GT-polygon composed of chains
Point_and_Vector_Object_Count: 12

Spatial_Reference_Information:

Horizontal_Coordinate_System_Definition:

Planar:

Map_Projection:

Map_Projection_Name: NAD 1983 HARN UTM Zone 4N

Transverse_Mercator:

Scale_Factor_at_Central_Meridian: 0.9996
Longitude_of_Central_Meridian: -159.0
Latitude_of_Projection_Origin: 0.0
False_Easting: 500000.0
False_Northing: 0.0

Planar_Coordinate_Information:

Planar_Coordinate_Encoding_Method: coordinate pair

Coordinate_Representation:

Abscissa_Resolution: 0.0001
Ordinate_Resolution: 0.0001

Planar_Distance_Units: meter

Geodetic_Model:

Horizontal_Datum_Name: D North American 1983 HARN
Ellipsoid_Name: GRS 1980
Semi-major_Axis: 6378137.0
Denominator_of_Flattening_Ratio: 298.257222101

Entity_and_Attribute_Information:

Detailed_Description:

Entity_Type:

Entity_Type_Label: slr_passive_fld_2_pt_0_ft

Attribute:

Attribute_Label: OBJECTID

Attribute_Definition: Internal feature number.

Attribute_Definition_Source: Esri

Attribute_Domain_Values:

Unrepresentable_Domain:: Sequential unique whole numbers that are automatically generated.

Attribute:

Attribute_Label: Shape

Attribute_Definition: Feature geometry.

Attribute_Definition_Source: Esri

Attribute_Domain_Values:

Unrepresentable_Domain: Coordinates defining the features.

Attribute:

Attribute_Label: FloodSrc

Attribute:

Attribute_Label: Shape_Length

Attribute_Definition: Length of feature in internal units.

Attribute_Definition_Source: Esri

Attribute_Domain_Values:

Unrepresentable_Domain: Positive real numbers that are automatically generated.

Attribute:

Attribute_Label: Shape_Area

Attribute_Definition: Area of feature in internal units squared.

Attribute_Definition_Source: Esri

Attribute_Domain_Values:

Unrepresentable_Domain: Positive real numbers that are automatically generated.

Distribution_Information:

Distributor:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization: Pacific Islands Ocean Observing System (PacIOOS)

Contact_Voice_Telephone: Unknown

Contact_Electronic_Mail_Address: info@pacioos.org

Distribution_Liability: Unknown

Standard_Order_Process:

Digital_Form:

Digital_Transfer_Information:

Format_Name: GeoServer
Format_Information_Content:: This URL provides access to this dataset via GeoServer, which offers multiple output formats and an OpenLayers viewer.

Digital_Transfer_Option:

Online_Option:

Computer_Contact_Information:

Network_Address: