Cheryl Hapke
David Reid
2006
SOCAL_TRANSECTS_ST - Short-Term Shoreline Change Rates for Southern California Generated at a 50m Transect Spacing, 1971-1998
1.1
vector digital data
Open-File Report
2006-1219
Pacific Science Center, Santa Cruz, CA
U.S. Geological Survey
http://pubs.usgs.gov/of/2006/1251/SCal.zip
Cheryl Hapke
David Reid
2006
National Assessment of Shoreline Change: A GIS Compilation of Vector Shorelines and Associated Shoreline Change Data for the Sandy Shorelines of the California Coast
1.1
Open-File Report
2006-1251
Pacific Science Center, Santa Cruz, CA
U.S. Geological Survey
https://doi.org/10.3133/ofr20061251
Rates of long-term and short-term shoreline change were generated in a GIS using the Digital Shoreline Analysis System (DSAS) version 3.0; An ArcGIS extension for calculating shoreline change: U.S. Geological Survey Open-File Report 2005-1304, Thieler, E.R., Himmelstoss, E.A., Zichichi, J.L., and Miller, T.M. The extension is designed to efficiently lead a user through the major steps of shoreline change analysis. This extension to ArcGIS contains three main components that define a baseline, generate orthogonal transects at a user-defined separation along the coast, and calculate rates of change (linear regression, endpoint rate, average of rates, average of endpoints, jackknife).
Historical shoreline change is considered to be a crucial element in studying the vulnerability of the national shoreline. These data are used in a shoreline change analysis for the U.S. Geological Survey (USGS) National Assessment Project.
2005
publication date
Unknown
-120.001754
-117.125124
34.459600
32.576084
-120.001754
-117.125124
34.459600
32.576084
USGS Metadata Identifier
USGS:e08b9e13-9bc2-4bac-961c-0897a565b74b
None
Shoreline
Historic Shoreline
Shoreline Change Rate
Linear Regression Rate
Endpoint Rate
Baseline
Beach Erosion
T-sheet
Tp-sheet
Coastal Survey Map
U.S. Geological Survey
USGS
Coastal and Marine Geology Program
CMGP
ESRI polyline shapefile
ISO 19115 Topic Category
oceans
environment
geoscientificInformation
Marine Realms Information Bank (MRIB) keywords
effects of coastal change
coastal processes
shoreline accretion
shoreline erosion
USGS Thesaurus
Beach Nourishment
LIDAR
coastal processes
erosion
shoreline accretion
Coastal and Marine Ecological Classification Standard (CMECS)
Continental/Island Shore Complex
General
California
United States
Coastal and Marine Ecological Classification Standard (CMECS)
Southern California Bight Ecoregion
Coastal and Marine Ecological Classification Standard (CMECS)
Substrate
None
Public domain data from the U.S. government are freely redistributable with proper metadata and source attribution. Please recognize the U.S. Geological Survey (USGS) as the source of this information.
U.S. Geological Survey, Pacific Coastal and Marine Science Center
PCMSC Science Data Coordinator
mailing and physical
2885 Mission Street
Santa Cruz
CA
95060-5792
US
831-427-4747
pcmsc_data@usgs.gov
Microsoft Windows XP Version 5.1 (Build 2600) Service Pack 2; ESRI ArcCatalog 9.1.0.780
Cheryl J. Hapke
David Reid
Bruce M. Richmond
Peter Ruggiero
Jeff List
2006
National Assessment of Shoreline Change Part 3: Historical Shoreline Change and Associated Coastal Land Loss Along Sandy Shorelines of the California Coast
1.0
Open-File Report
2006-1219
Pacific Science Center, Santa Cruz, CA
U.S. Geological Survey
http://pubs.usgs.gov/of/2006/1219/
E. Robert Thieler
Emily A. Himmelstoss
Jessica L. Zichichi
Tara L. Miller
2005
The Digital Shoreline Analysis System (DSAS) version 3.0, an ArcGIS Extension for Calculating Historic Shoreline Change
3.0
Open-File Report
2005-1304
Woods Hole Science Center, Woods Hole, MA
U.S. Geological Survey
http://woodshole.er.usgs.gov/project-pages/DSAS/version3/
Transect generation was made as part of the calculation process for the Digital Shoreline Analysis System an Extension for ArcGIS (http://pubs.usgs.gov/of/2005/1304/)
This shoreline-transect data adequately represented the intersect at the time of the analysis. Remaining gaps in this data, if applicable, are a consequence of non-existing data, transects crossing man-made features or existing data that did not meet quality assurance standards.
See USGS Open-File Report 2006-1219
A baseline was manually constructed seaward of, and parallel to, the trend of shorelines representing four general time periods (1800s, 1920s-1930s, 1970s, and 1998-2002). Using DSAS, transects were generated with a spacing of 50m and transect-shoreline intersection points were saved to a separate layer. Transects were manually eliminated to prevent calculation of rates in areas where less than four shorelines were intersected.
Long-term rates of shoreline change, in units of m/yr, were calculated at each transect using linear regression applied to all four shoreline positions from the earliest (1800s) to the most recent (derived from lidar). Linear regression was selected because it has been shown to be the most statistically robust quantitative method when a limited number of shorelines are available and it is the most commonly applied statistical technique for expressing shoreline movement and estimating rates of change. Uncertainties for the long-term rates are also reported in units of m/yr and represent a 90% confidence interval for the slope of the regression line. This means with 90% statistical confidence that the true rate of shoreline change falls within the range defined by the reported value plus or minus the error value. The variability around the trend reflects both measurement and sampling errors. Short-term rates of shoreline change, in units of m/yr, were calculated using the endpoint method comparing the 1970s and most recent shoreline position
s. Process date is estimated.
2002
U.S. Geological Survey
Bruce Richmond
mailing and physical address
Pacific Science Center
2885 Mission Street
Santa Cruz
Ca
95060
USA
(831) 427-4450
(831) 427-4748
Monday through Friday, 8 a.m. to 5 p.m., Pacific Standard Time
Data were projected from UTM zone 10 to geographic with Datum shift from NAD27 to NAD83_6
Tool: ArcGIS > ArcToolbox > Toolboxes > Data Management Tools > Project
Command issued:
['GCS_North_American_1983',DATUM['D_North_American_1983',
SPHEROID['GRS_1980',6378137.0,298.257222101]],
PRIMEM['Greenwich',0.0],UNIT['Degree',0.0174532925199433]]
NAD_1927_To_NAD_1983_6
20070215
Emily Himmelstoss
U.S. Geological Survey
Geologist
mailing and physical address
384 Woods Hole Road
Woods Hole
MA
02543-1598
USA
508-548-8700 x2262
(508) 457-2310
ehimmelstoss@usgs.gov
Keywords section of metadata optimized for discovery in USGS Coastal and Marine Geology Data Catalog.
20170207
U.S. Geological Survey
Alan O. Allwardt
Contractor -- Information Specialist
mailing and physical address
2885 Mission Street
Santa Cruz
CA
95060
831-460-7551
831-427-4748
aallwardt@usgs.gov
Added keywords from Coastal and Marine Ecological Classification Standard (CMECS) to metadata.
20180426
U.S. Geological Survey
Alan O. Allwardt
Contractor -- Information Specialist
mailing and physical address
2885 Mission Street
Santa Cruz
CA
95060
831-460-7551
831-427-4748
aallwardt@usgs.gov
Edited metadata to add keywords section with USGS persistent identifier as theme keyword. No data were changed.
20201019
U.S. Geological Survey
VeeAnn A. Cross
Marine Geologist
Mailing and Physical
384 Woods Hole Road
Woods Hole
MA
02543-1598
508-548-8700 x2251
508-457-2310
vatnipp@usgs.gov
Edited metadata to perform minor edits to bring the metadata up to current PCMSC standards. No data were changed. The metadata available from a harvester may supersede metadata bundled within a download file. Users are advised to compare the metadata dates to determine which metadata file is most recent.
20211025
U.S. Geological Survey
Susan Cochran
Geologist
Mailing and Physical
2885 Mission Street
Santa Cruz
CA
95060
831-460-7545
scochran@usgs.gov
Vector
String
6334
0.000001
0.000001
Decimal degrees
North American Datum of 1983
Geodetic Reference System 80
6378137.000000
298.257222
Socal_transects_st
Southern California Long-Term Transects
USGS
FID
Internal feature number.
ESRI
Sequential unique whole numbers that are automatically generated.
Shape
Feature geometry.
ESRI
Coordinates defining the features.
OBJECTID
Feature number.
DSAS
1
5734
TransOrder
Transect Sequence
DSAS
1
5734
BaselineID
Baseline Identification
DSAS
Baseline Identification
Autogen
Indicates whether the transect was autogenerated or manually generated.
DSAS
Indicates whether the transect was autogenerated or manually generated.
StartX
X starting position of the transect in UTM meters.
DSAS
X starting position of the transect in UTM meters.
StartY
Y starting position of the transect in UTM meters.
DSAS
Y starting position of the transect in UTM meters.
ProcTime
Date and time the rate calculation was generated.
DSAS
Date and time the rate calculation was generated.
ShorelineD
Shorelines used in calculation
DSAS
Shorelines used in calculation
EndX
X Ending position of the transect in UTM meters.
DSAS
X Ending position of the transect in UTM meters.
PointCNT
Number of shoreline intersections in the rate calculation.
DSAS
Number of shoreline intersections in the rate calculation.
EndY
Y Ending position of the transect in UTM meters.
DSAS
Y Ending position of the transect in UTM meters.
Azimuth
The transect's horizontal angular distance from north.
DSAS
The transect's horizontal angular distance from north.
EPR
End Point Rate
DSAS
-5.48
6.78
meters/year
0.1
U.S. Geological Survey
mailing and physical address
Pacific Science Center
2885 Mission Street
Santa Cruz
Ca
95060
USA
(831) 427-4450
(831) 427-4748
Monday through Friday, 8 a.m. to 5 p.m., Eastern Standard Time
Downloadable Data: USGS Open-File Report 2006-1251
Although these data have been used by the U.S. Geological Survey, U.S. Department of the Interior, these data and information are provided with the understanding that they are not guaranteed to be usable, timely, accurate, or complete. Users are cautioned to consider carefully the provisional nature of these data and information before using them for decisions that concern personal or public safety or the conduct of business that involves substantial monetary or operational consequences. Conclusions drawn from, or actions undertaken on the basis of, such data and information are the sole responsibility of the user.
Neither the U.S. Government nor any agency thereof, nor any of their employees, contractors, or subcontractors, make any warranty, express or implied, nor assume any legal liability or responsibility for the accuracy, completeness, or usefulness of any data, software, information, apparatus, product, or process disclosed, nor represent that its use would not infringe on privately owned rights.
Trade, firm, or product names and other references to non-USGS products and services are provided for information only and do not constitute endorsement or warranty, express or implied, by the USGS, USDOI, or U.S. Government, as to their suitability, content, usefulness, functioning, completeness, or accuracy.
shapefile
20060901
ESRI polyline shapefile
Seven files comprise the ArcView shapefile: <filename>.dbf, <filename>.shp, <filename>.shx, <filename>.prj, <filename>.avl, <filename>.sbx, <filename>.sbn
zip archive
0.532
http://pubs.usgs.gov/of/2006/1251/SCal.zip
http://pubs.usgs.gov/of/2006/1251/#gis
Data may be downloaded via the World Wide Web (WWW).
None
These data are available in Environmental Systems Research Institute (ESRI) shapefile format. The user must have ArcGIS or ArcView 3.0 or greater software to read and process the data file. In lieu of ArcView or ArcGIS, the user may utilize another GIS application package capable of importing the data. A free data viewer, ArcExplorer, capable of displaying the data is available from ESRI at www.esri.com.
20211025
U.S. Geological Survey, Pacific Coastal and Marine Science Center
PCMSC Science Data Coordinator
mailing and physical
2885 Mission Street
Santa Cruz
CA
95060-5792
US
831-427-4747
pcmsc_data@usgs.gov
Content Standard for Digital Geospatial Metadata
FGDC-STD-001-1998
local time