Citation:
Citation Information:
Title:
Sediment Export to Nearshore Waters - Hawaii
Date:
Date: March 14, 2017
Date Type:
creation
(CI_DateTypeCode)
Identifier:
Code:
hi_otp_all_nearshore_sediment
Authority:
org.pacioos
Responsible Party:
Individual Name:
Carrie V. Kappel
Organization Name:
National Center for Ecological Analysis and Synthesis (NCEAS)
Contact:
Contact Address:
Email:
kappel@nceas.ucsb.edu
Online Resource:
Linkage: http://oceantippingpoints.org/about-us/people#Carrie
Protocol:
http
Function:
information
(CI_OnLineFunctionCode)
Contact Role:
principalInvestigator
(CI_RoleCode)
Responsible Party:
Individual Name:
Lisa M. Wedding
Organization Name:
University of Oxford
Contact:
Contact Address:
Email:
lisa.wedding@ouce.ox.ac.uk
Online Resource:
Linkage: https://www.geog.ox.ac.uk/staff/lwedding.html
Protocol:
http
Function:
information
(CI_OnLineFunctionCode)
Contact Role:
originator
(CI_RoleCode)
Responsible Party:
Individual Name:
Joey Lecky
Organization Name:
NOAA Pacific Islands Fisheries Science Center (PIFSC)
Contact:
Contact Address:
Email:
joey.lecky@noaa.gov
Contact Role:
originator
(CI_RoleCode)
Responsible Party:
Organization Name:
Ocean Tipping Points (OTP)
Contact:
Contact Address:
Email:
info@oceantippingpoints.org
Online Resource:
Linkage: http://oceantippingpoints.org
Protocol:
http
Function:
information
(CI_OnLineFunctionCode)
Contact Role:
resourceProvider
(CI_RoleCode)
Responsible Party:
Organization Name:
Pacific Islands Ocean Observing System (PacIOOS)
Contact:
Contact Address:
Email:
info@pacioos.org
Online Resource:
Linkage: http://pacioos.org
Protocol:
http
Function:
information
(CI_OnLineFunctionCode)
Contact Role:
publisher
(CI_RoleCode)
Other Citation Details:
Related publications: Wedding LM, Lecky J, Gove JM, Walecka HR, Donovan MK, et al. (2018) Advancing the integration of spatial data to map human and natural drivers on coral reefs. PLOS ONE 13(3): e0189792. https://doi.org/10.1371/journal.pone.0189792; Falinski, KA (2016) Predicting sediment export into tropical coastal ecosystems to support ridge to reef management. PhD thesis. University of Hawaii at Manoa, Honolulu, HI.
Suggested data citation: Kappel, C.V., L.M. Wedding, J. Lecky, and Ocean Tipping Points (OTP). 2017. Sediment Export to Nearshore Waters - Hawaii. Distributed by the Pacific Islands Ocean Observing System (PacIOOS). http://pacioos.org/metadata/hi_otp_all_nearshore_sediment.html. Accessed [date].
Abstract:
This raster data layer represents sediment plumes originating from stream mouths and coastal pour points. The Integrated Valuation of Ecosystem Services and Tradeoffs (InVEST) model for sediment retention was modified for Hawaii, parameterized, and run for each of the Main Hawaiian Islands to determine sediment export from subwatershed hydrologic units (Falinski, 2016). Results from this model were aggregated into larger drainage areas that flow to single coastal pour points. From these points sediment was dispersed offshore using the Kernel Density tool in ArcGIS with a 1.5-km search radius. The resulting raster depicts simplistic sediment plumes with units in tons of sediment per year per hectare.
The InVEST model predicts the average annual amount of sediment (tons/yr) retained in and exported from each map pixel as a function of many landscape variables. Data inputs to InVEST included: 1) USGS 10-m Digital Elevation Model (DEM); 2) NOAA Coastal Change Analysis Program (C-CAP) land use/land cover data; 3) R factor (old USGS maps and interpolation); 4) K factor (USDA Natural Resources Conservation Service (NRCS) Soil Survey Geographic database (SSURGO)); 5) University of Hawaii at Manoa (UH) rainfall atlas; 6) ArcHydro-derived subwatersheds such that flow lines approximately match the State of Hawaii streams layer; and 7) derived products from the above and more. See Falinski (2016) for detailed methodology.
Coastal pour points were created by intersecting streams and coastline features from the National Hydrography Dataset (NHD), resulting in points where streams flow to the shoreline. The NHD was used rather than flow lines generated from the DEM because there are many instances in Hawaii where streams flow into man-made ditch systems and never reach the coast or simply dry up and go underground before reaching the coast.
To determine the amount of sediment load at the coastline, resulting coastal points were given a unique drainage identifier. Next, the stream segment features were buffered by 1 m and dissolved so that connecting stream networks became single features. These polygon stream features were then assigned the drainage ID from the coastal points using a spatial join and subsequently used to assign that drainage ID to the subwatershed polygons. Finally, subwatersheds were dissolved by drainage ID and sediment export from each subwatershed was summed up to yield the total sediment export for each larger drainage basin, which was then joined back to the corresponding coastal drainage points. Each step in the process required quality control to ensure that: no pour points are left out, subwatersheds are not erroneously connected to the wrong drainage or left out, each drainage has only 1 pour point, and drainages do not erroneously span a ridgeline that should divide basins.
Purpose:
This layer was developed as part of a geospatial database of key anthropogenic pressures to coastal waters of the Main Hawaiian Islands for the Ocean Tipping Points (OTP) project (http://oceantippingpoints.org). Ocean tipping points occur when shifts in human use or environmental conditions result in large, and sometimes abrupt, impacts to marine ecosystems. The ability to predict and understand ocean tipping points can enhance ecosystem management, including critical coral reef management and policies to protect ecosystem services produced by coral reefs. The goal of the Ocean Tipping Points Hawaii case study was to gather, process, and map spatial information on environmental and human-based drivers of coral reef ecosystem conditions.
Credit:
The Ocean Tipping Points project, 2016. Please acknowledge the Ocean Tipping Points project as a source when these data are used in the preparation of reports, papers, publications, maps, and other products. When applying these data for publication, please reference and cite the following journal article: Wedding LM, Lecky J, Gove JM, Walecka HR, Donovan MK, et al. (2018) Advancing the integration of spatial data to map human and natural drivers on coral reefs. PLOS ONE 13(3): e0189792. https://doi.org/10.1371/journal.pone.0189792.
Point of Contact:
Responsible Party:
Individual Name:
Carrie V. Kappel
Organization Name:
National Center for Ecological Analysis and Synthesis (NCEAS)
Contact:
Contact Address:
Email:
kappel@nceas.ucsb.edu
Online Resource:
Linkage: http://oceantippingpoints.org/about-us/people#Carrie
Protocol:
http
Function:
information
(CI_OnLineFunctionCode)
Contact Role:
pointOfContact
(CI_RoleCode)
Browse Graphic:
View full image
Image File: http://www.pacioos.hawaii.edu/metadata/browse/hi_otp_all_nearshore_sediment.png
File Description:
Sample image.
Descriptive Keywords:
Keywords:
Keyword Type:
theme
(MD_KeywordTypeCode)
Keyword: Earth Science Biosphere Aquatic Ecosystems Reef Habitat
Keyword: Earth Science Biosphere Ecosystems Marine Ecosystems Reef Coral Reef
Keyword: Earth Science Human Dimensions Environmental Impacts
Keyword: Earth Science Human Dimensions Human Settlements Coastal Areas
Keyword: Earth Science Human Dimensions Sustainability Environmental Sustainability
Keyword: Earth Science Land Surface Erosion/Sedimentation Sedimentation
Keyword: Earth Science Land Surface Geomorphic Landforms/Processes Coastal Processes Sedimentation
Keyword: Earth Science Oceans Coastal Processes Coral Reefs
Keyword: Earth Science Oceans Coastal Processes Sedimentation
Keyword Thesaurus:
Citation Information:
Title:
GCMD Science Keywords
Keywords:
Keyword Type:
place
(MD_KeywordTypeCode)
Keyword: Continent North America United States Of America Hawaii
Keyword: Ocean Pacific Ocean Central Pacific Ocean Hawaiian Islands
Keyword Thesaurus:
Citation Information:
Title:
GCMD Location Keywords
Keywords:
Keyword Type:
project
(MD_KeywordTypeCode)
Keyword: PacIOOS Pacific Islands Ocean Observing System
Keyword Thesaurus:
Citation Information:
Title:
GCMD Project Keywords
Keywords:
Keyword Type:
dataCenter
(MD_KeywordTypeCode)
Keyword: PacIOOS Pacific Islands Ocean Observing System
Keyword Thesaurus:
Citation Information:
Title:
GCMD Data Center Keywords
Aggregation Information:
Aggregate Dataset Name:
Citation Information:
Title:
Pacific Islands Ocean Observing System (PacIOOS)
Association Type: largerWorkCitation (DS_AssociationTypeCode)
Initiative Type: project (DS_InitiativeTypeCode)
Resource Constraints:
Legal Constraints:
Use Limitation:
Please contact the Ocean Tipping Points (OTP) project in advance of applying these data to project work so that the principal investigator, Carrie Kappel (kappel@nceas.ucsb.edu), can track and communicate data uses and ensure no duplicate efforts are underway. The data may be used and redistributed for free but is not intended for legal use, since it may contain inaccuracies. Neither the data Contributor, University of Hawaii, PacIOOS, NOAA, State of Hawaii nor the United States Government, nor any of their employees or contractors, makes any warranty, express or implied, including warranties of merchantability and fitness for a particular purpose, or assumes any legal liability for the accuracy, completeness, or usefulness, of this information.
Language:
eng
Topic Category:
environment
Topic Category:
oceans
Extent Information:
Spatial Temporal Extent:
Geographic Element:
Bounding Coordinates:
Westbound Longitude: -160.29941°
Eastbound Longitude: -154.68344°
Southbound Latitude: 18.84685°
Northbound Latitude: 22.27919°
Services:
Service Identification:
Identifier: OGC-WCS
Service Type:
Open Geospatial Consortium Web Coverage Service (WCS)
Contains Operation:
Operation Name:
GetCapabilities
Online Resource:
Linkage: http://geo.pacioos.hawaii.edu/geoserver/PACIOOS/hi_otp_all_nearshore_sediment/ows?service=WCS&version=1.0.0&request=GetCapabilities
Name:
OGC-WCS
Protocol:
OGC:WCS
Description:
Open Geospatial Consortium Web Coverage Service (WCS). Supported WCS versions include 1.0.0, 1.1.0, and 1.1.1. Supported output formats include GeoTIFF, GIF, JPEG, PNG, or TIFF.
Function:
download
(CI_OnLineFunctionCode)
Services:
Service Identification:
Identifier: OGC-WMS
Service Type:
Open Geospatial Consortium Web Map Service (WMS)
Contains Operation:
Operation Name:
GetCapabilities
Online Resource:
Linkage: http://geo.pacioos.hawaii.edu/geoserver/PACIOOS/hi_otp_all_nearshore_sediment/ows?service=WMS&version=1.3.0&request=GetCapabilities
Name:
OGC-WMS
Protocol:
OGC:WMS
Description:
Open Geospatial Consortium Web Map Service (WMS). Supported WMS versions include 1.1.1 and 1.3.0. Supported map formats include AtomPub, GeoRSS, GeoTIFF, GIF, JPEG, KML/KMZ, PDF, PNG, SVG, and TIFF. Supported info formats include GeoJSON, GeoJSON-P, GML, HTML, and plain text.
Function:
download
(CI_OnLineFunctionCode)
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