Santa Monica, California 1/3 arc-second MHW Coastal Digital Elevation Model
Thumbnail of DEMNOAA's National Geophysical Data Center (NGDC) is building high-resolution digital
elevation models (DEMs) for select U.S. coastal regions. These integrated bathymetric-topographic
DEMs are used to support tsunami forecasting and warning efforts at the NOAA Center
for Tsunami Research, Pacific Marine Environmental Laboratory (PMEL). The DEMs are
part of the tsunami forecast system SIFT (Short-term Inundation Forecasting for Tsunamis)
currently being developed by PMEL for the NOAA Tsunami Warning Centers, and are used
in the MOST (Method of Splitting Tsunami) model developed by PMEL to simulate tsunami
generation, propagation, and inundation. Bathymetric, topographic, and shoreline data
used in DEM compilation are obtained from various sources, including NGDC, the U.S.
National Ocean Service (NOS), the U.S. Geological Survey (USGS), the U.S. Army Corps
of Engineers (USACE), the Federal Emergency Management Agency (FEMA), and other federal,
state, and local government agencies, academic institutions, and private companies.
DEMs are referenced to a variety of vertical datums and horizontal datum of World
Geodetic System of 1984 (WGS84). Cell size for the DEMs ranges from 1/3 arc-second
(~10 meters) to 3 arc-seconds (~90 meters).
- Cite as: NOAA National Geophysical Data Center. 2010: Santa Monica, California 1/3
arc-second MHW Coastal Digital Elevation Model. NOAA National Centers for Environmental
Information. Accessed [date].
- NCEI Metadata ID: gov.noaa.ngdc.mgg.dem:663
gov.noaa.ngdc.mgg.dem:663
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| Search Data |
- DEM text search (search)
Text search for locating completed and planned DEMs.
- Bathymetric Data Viewer (search)
The Bathymetric Data Viewer is an interactive map providing discovery, descriptions,
and download capability for bathymetric survey data and digital elevation models archived
at NOAA's National Centers for Environmental Information (NCEI).
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| Download Data |
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| Distribution Formats |
- netCDF (Version:4 Classic)
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| Ordering Instructions |
Contact NCEI for other distribution options and instructions. |
| Distributor |
NOAA National Centers for Environmental Information
ncei.info@noaa.gov |
| Dataset Point of Contact |
NOAA National Centers for Environmental Information
ncei.info@noaa.gov
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| Dataset Point of Contact |
DEM Information
NOAA National Centers for Environmental Information
dem.info@noaa.gov
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| Time Period |
1932-01-01 to 2009-01-01 |
| Spatial Reference System |
urn:ogc:def:crs:EPSG::4326urn:ogc:def:datum:EPSG::5868 |
| Spatial Bounding Box Coordinates |
West:-119.14
East:-117.80
South:33.20
North:34.20
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| Spatial Coverage Map |
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| General Documentation |
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| Associated Resources |
- Data Stewardship Maturity Report for Santa Monica, California 1/3 arc-second Mean
High Water (MHW) Coastal Digital Elevation Model
- NOAA Tsunami Inundation Gridding Project
- Bathymetric Data Viewer (search)
The Bathymetric Data Viewer is an interactive map providing discovery, descriptions,
and download capability for bathymetric survey data and digital elevation models archived
at NOAA's National Centers for Environmental Information (NCEI).
- DEM text search (search)
Text search for locating completed and planned DEMs.
- Digital Elevation Models of Santa Monica, California: Procedures, Data Sources, and
Analysis
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| Publication Dates |
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| Edition |
First |
| Data Presentation Form |
mapDigital
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| Dataset Progress Status |
Complete - production of the data has been completed
Historical archive - data has been stored in an offline storage facility |
| Data Update Frequency |
As needed |
| Purpose |
Developed for the Pacific Marine Environmental Laboratory (PMEL), NOAA Center for
Tsunami Research program in support of NOAA's tsunami forecasting and warning efforts. |
| Use Limitations |
- Not to be used for navigation. Although these data are of high quality and useful
for planning and modeling purposes, they are not suitable for navigation. For navigation,
please refer to the NOS nautical chart series.
- Produced by the NOAA National Centers for Environmental Information. Not subject to
copyright protection within the United States.
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| Dataset Citation |
- Cite as: NOAA National Geophysical Data Center. 2010: Santa Monica, California 1/3
arc-second MHW Coastal Digital Elevation Model. NOAA National Centers for Environmental
Information. Accessed [date].
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| Cited Authors |
- NOAA National Geophysical Data Center
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| Publishers |
- NOAA National Centers for Environmental Information
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| Theme keywords |
Global Change Master Directory (GCMD) Science Keywords
- Earth Science > Oceans > Bathymetry/Seafloor Topography > Seafloor Topography
- Earth Science > Oceans > Bathymetry/Seafloor Topography > Bathymetry
- Earth Science > Oceans > Bathymetry/Seafloor Topography > Water Depth
- Earth Science > Land Surface > Topography > Terrain Elevation
- Earth Science > Land Surface > Topography > Terrain Elevation > Topographical Relief
Maps
- Earth Science > Oceans > Coastal Processes > Coastal Elevation
Uncontrolled
- Coastal Relief
- Gridded elevations
- Integrated bathymetry and topography
Global Change Master Directory (GCMD) Service Keywords
- DATA ANALYSIS AND VISUALIZATION > GEOGRAPHIC INFORMATION SYSTEMS > WEB-BASED GEOGRAPHIC
INFORMATION SYSTEMS
- DATA MANAGEMENT/DATA HANDLING > DATA SEARCH AND RETRIEVAL
- DATA ANALYSIS AND VISUALIZATION > VISUALIZATION/IMAGE PROCESSING
Global Change Master Directory (GCMD) Service Keywords
- DATA ANALYSIS AND VISUALIZATION > GEOGRAPHIC INFORMATION SYSTEMS > WEB-BASED GEOGRAPHIC
INFORMATION SYSTEMS
- DATA MANAGEMENT/DATA HANDLING > DATA SEARCH AND RETRIEVAL
- DATA ANALYSIS AND VISUALIZATION > VISUALIZATION/IMAGE PROCESSING
Global Change Master Directory (GCMD) Service Keywords
- DATA ANALYSIS AND VISUALIZATION > GEOGRAPHIC INFORMATION SYSTEMS > WEB-BASED GEOGRAPHIC
INFORMATION SYSTEMS
- DATA MANAGEMENT/DATA HANDLING > DATA SEARCH AND RETRIEVAL
- DATA ANALYSIS AND VISUALIZATION > VISUALIZATION/IMAGE PROCESSING
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| Data Center keywords |
Global Change Master Directory (GCMD) Data Center Keywords
- DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA,
U.S. Department of Commerce
- DOC/NOAA/NESDIS/NGDC > National Geophysical Data Center, NESDIS, NOAA, U.S. Department
of Commerce
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| Platform keywords |
Global Change Master Directory (GCMD) Platform Keywords
- Models/Analyses > DEM > Digital Elevation Model
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| Place keywords |
Global Change Master Directory (GCMD) Location Keywords
- Continent > North America > United States of America > Oregon
- Ocean > Pacific Ocean > North Pacific Ocean
- Vertical Location > Land Surface
- Vertical Location > Sea Floor
Uncontrolled
- Santa Monica
- Long Beach
- Los Angeles
- Los Angeles County
- Southern California
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| Project keywords |
Global Change Master Directory (GCMD) Project Keywords
- ICSU-WDS > International Council for Science - World Data System
- NOAA OneStop Project
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| Data Resolution keywords |
Global Change Master Directory (GCMD) Horizontal Data Resolution KeywordsGlobal Change Master Directory (GCMD) Vertical Data Resolution Keywords
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| Use Constraints |
- Use liability: NOAA and NCEI cannot provide any warranty as to the accuracy, reliability,
or completeness of furnished data. Users assume responsibility to determine the usability
of these data. The user is responsible for the results of any application of this
data for other than its intended purpose.
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| Access Constraints |
- Distribution liability: NOAA and NCEI make no warranty, expressed or implied, regarding
these data, nor does the fact of distribution constitute such a warranty. NOAA and
NCEI cannot assume liability for any damages caused by any errors or omissions in
these data. If appropriate, NCEI can only certify that the data it distributes are
an authentic copy of the records that were accepted for inclusion in the NCEI archives.
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| Other Constraints |
Cite as: NOAA National Geophysical Data Center. 2010: Santa Monica, California 1/3
arc-second MHW Coastal Digital Elevation Model. NOAA National Centers for Environmental
Information. Accessed [date]. |
| Fees |
- In most cases, electronic downloads of the data are free. However, fees may apply
for custom orders, data certifications, copies of analog materials, and data distribution
on physical media.
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Lineage information for:dataset
| Processor |
- NOAA National Centers for Environmental Information
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| Processing Steps |
- 2009-09-25T00:00:00 -All datasets obtained by NGDC were converted to common horizontal and vertical datums
of NAD 83 geographic and NAVD 88, respectively, using FME and VDatum tool. They were
also converted to common file format, ESRI point shapefiles, for visualization and
inspection.
- 2009-10-23T00:00:00 -Datasets were visually inspected with ArcGIS for identification and editing of data
anomalies. Datasets were then compared with overlapping datasets to ensure data consistency.
- 2009-11-27T00:00:00 -Coastline datasets were merged and adjusted to fit satellite imagery.
- 2009-12-18T00:00:00 -xyz files of the bathymetric data were surfaced using GMT's 'surface' tool onto a
1 arc-second grid that interpolated to fill empty cells. Points extracted every 10
meters along the coastline were also included to ensure that the bathymetric grid
reached zero at the coast. The resulting Arc ASCII grid was imported into ArcGIS and
clipped to the coastline to remove values over land.
- 2010-01-22T00:00:00 -xyz files for each input dataset were gridded using MB-System's 'mbgrid' tool, which
utilizes a high-tension spline interpolation method to fill grid cells with no input
elevation values. Preferential weighting was given to more recent, higher-accuracy
datasets. Gridding was performed in quadrants, each with a 5% data buffer. The grids
were imported in ArcGIS and seamlessly merged to create the NAVD 88 DEM.
- 2010-02-12T00:00:00 -The NAVD 88 was quantitatively evaluated by comparing with source datasets and with
elevation values extracted from NGS geodetic monuments. It was visually evaluated
by converting to UTM-zone coordinates (units of meters horizontally and vertically)
and then creating a slope grid to identify gridding artifacts in the NAVD 88 DEM.
- 2010-02-26T00:00:00 -A conversion grid that models the relationship between NAVD 88 and MHW was created
using data points and the VDatum transformation tool. This conversion grid was added
to the NAVD 88 DEM to generate the MHW DEM.
- 2010-03-05T00:00:00 -The MHW DEM was qualitativley evaluated by comparing with nautical charts and onsite.
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| Processing Environment |
Native Dataset Environment: Microsoft Windows 2000 Version 5.2 (Build 3790) Service
Pack 2; ESRI ArcCatalog 9.2.4.1420 |
| Source Datasets |
- NOS Hydrographic Surveys
- NOS Hydrographic Survey Database (download)
Digital database of NOS hydrographic surveys that date back to the late 19th century.
- Description of Source: Source Contribution: hydrographic surveys downloaded from web site. ; Source Type:
online
- Temporal extent used:
1932-01-01 to 2008-01-01
- NGDC Multibeam Bathymetry Database
- NGDC Multibeam Bathymetry Database (download)
Multibeam swath sonar survey data
- Description of Source: Source Contribution: Multibeam bathymetry data ; Source Type: online
- Temporal extent used:
1992-01-01 to 2006-01-01
- CSUMB Multibeam Swath Sonar Surveys
- California State University at Monterey Bay, Seafloor Mapping Lab (download)
Multibeam swath sonar surveys for Monterey Bay
- Description of Source: Source Contribution: Multibeam surveys for Santa Barbara Island and Channel, Santa
Catalina Island, and Santa Monica Bay ; Source Type: online
- Temporal extent used:
2001-01-01 to 2008-01-01
- Electronic Navigational Charts
- OCS Electronic Navigational Charts (download)
Digital database of NOAA nautical chart information.
- Description of Source: Source Contribution: coastline and bathymetric sounding data ; Source Type: online
- Time Instant:
2009-01-01
- USACE Hydrographic Surveys
- USACE Los Angeles District Hydrographic Surveys (download)
Digital database of hydrographic surveys in Los Angeles District
- Description of Source: Source Contribution: Hydrographic surveys for Los Angeles and Long Beach Harbors ;
Source Type: digital files via FTP
- Time Instant:
2007-01-01
- USGS NED topography
- USGS National Elevation Dataset (download)
Digital database of U.S. topography, in raster form (DEM)
- Description of Source: Source Contribution: topographic DEM downloaded from web site. ; Source Type: online
- Time Instant:
1999-01-01
- NOAA Coastal Services Center Coastal Topographic Lidar
- NOAA Coastal Services Center Coastal Topographic Lidar
- USACE SHOALS Topographic Lidar
- USACE Los Angeles District Topographic Lidar (download)
Digital database of topographic lidar in Los Angeles District
- Description of Source: Source Contribution: USACE SHOALS topographic lidar surveys for coastal California
; Source Type: digital files via FTP
- Time Instant:
2002-01-01
- Ventura County LiDAR
- Description of Source: Source Contribution: topographic LiDAR downloaded from county site ; Source Type:
digital transfer hard drive
- Time Instant:
2005-01-01
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Lineage information for:repository
| Processing Steps |
- 2015-04-22T00:00:00 -NOAA created the National Centers for Environmental Information (NCEI) by merging
NOAA's National Climatic Data Center (NCDC), National Geophysical Data Center (NGDC),
and National Oceanographic Data Center (NODC), including the National Coastal Data
Development Center (NCDDC), per the Consolidated and Further Continuing Appropriations
Act, 2015, Public Law 113-235. NCEI launched publicly on April 22, 2015.
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Acquisition Information (collection)
| Instrument |
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| Platform |
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| Operation |
- Tsunami Inundation Gridding Project
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Last Modified: 2022-03-25
For questions about the information on this page, please email:
ncei.info@noaa.gov