Cheryl Hapke
David Reid
2006
NORCAL_INTERSECTS_ST - Short-Term Transect-Shoreline Intersection Points for Northern California Generated to Calculate Shoreline Change Rates
1.0
point data
Open-File Report
2006-1251
Pacific Science Center, Santa Cruz, CA
U.S. Geological Survey, Coastal and Marine Geology Program
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
1.0
Open-File Report
2006-1251
Pacific Science Center, Santa Cruz, CA
U.S. Geological Survey, Coastal and Marine Geology Program
http://pubs.usgs.gov/of/2006/1251/
Norcal_intersects_st
http://pubs.usgs.gov/of/2006/1251/NCal.zip
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.
en
2005
publication date
Unknown
-124.408183
-122.966247
41.997797
38.232570
-124.408183
-122.966247
41.997797
38.232570
General
Shoreline
Historic Shoreline
Shoreline Change Rate
Linear Regression Rate
Endpoint Rate
Baseline
Beach Erosion
Beach Nourishment
LIDAR
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
oceans and estuaries
oceans and coastal
environment
geoscientificInformation
General
United States
California
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.
Bruce Richmond
U.S. Geological Survey
mailing and physical address
Pacific Science Center
400 Natural Bridges Drive
Santa Cruz
Ca
95060
USA
(831) 427-4450
(831) 427-4748
Monday through Friday, 8 a.m. to 5 p.m., Eastern Standard Time
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, Coastal and Marine Geology Program
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, Coastal and Marine Geology Program
http://woodshole.er.usgs.gov/project-pages/DSAS/version3/
Shapefile
Shoreline-Transect Intersections represent the absolute position of the intersects and do not take into account bias shift values in the positions and distances of the shoreline and for rate calculation.
This shoreline-transect intersect 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.
Postional Accuracy is based on position of shoreline with respect to the transect.
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 an Extension for ArcGIS(http://pubs.usgs.gov/of/2005/1304/), 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 positions.
Bruce Richmond
U.S. Geological Survey
mailing and physical address
Pacific Science Center
400 Natural Bridges Drive
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 a datum shift from NAD27 to NAD83
Tool: ArcGIS > ArcToolbox > Toolboxes > Data Management Tools > Project
Command issued:
GEOGCS['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_NADCON
20070716
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
ArcGIS 9.2 Toolbox
THE NATIONAL ASSESSMENT OF SHORELINE CHANGE: A GIS Compilation of Vector Shorelines and Associated Shoreline Change Data for the Sandy Shorelines of the California Coast.Cheryl HapkeDavid Reid2006point dataOpen File Report2006-1251USGS Pacific Science Center, Santa Cruz, CaliforniaU.S. Geological Survey, Coastal and Marine Geology Programhttp://pubs.usgs.gov/of/2006/1251Cheryl HapkeDavid ReidBruce RichmondPeter RuggieroJeff List2006National Assessment of Shoreline Change: Part 3, Historical Shoreline Changes and Associated Coastal Land Loss Along sandy shorelines of the California coastpoint dataOpen File Report2006-1219USGS Pacific Science Center, Santa Cruz, CaliforniaU.S. Geological Survey, Coastal and Marine Geology Programhttp://pubs.usgs.gov/of/2006/1219Intersect PointsTransect-Shoreline Intersect PointsUSGSunknownground condition
Vector
Entity point
6781
Simple
FALSE
FALSE
TRUE
Point
6781
North American Datum of 1983
Geodetic Reference System 80
6378137.000000
298.257222
GCS_North_American_1983
Decimal degrees0.0000000.000000
Norcal_intersects_st
Shoreline-Transect Intersections
USGS
6781
Feature Class
FID
Internal feature number.
ESRI
Sequential unique whole numbers that are automatically generated.
Shape
Feature geometry.
ESRI
Coordinates defining the features.
TransectId
Identifies transect with which the intersection points are associated.
DSAS
Value
Transect Identification
DSAS
TransectId
Number
9
BaselineId
Baseline ID Used by Transect
USGS
Baseline Identification
Number
9
ShorelineI
Shoreline Date
USGS
Date
Shoreline Date associated with Transect-Shoreline Intersect
USGS
String
254
Distance
Distance from Baseline to Shoreline-Transect Intersect
USGS
Meters
Distance from Baseline to Shoreline-Transect Intersect
USGS
11
Number
19
IntersectX
X Coordinate of Intersect Point
USGS
Coordinates defining the features.
11
Number
19
IntersectY
Y Coordinate of Intersect Point
USGS
Coordinates defining the features.
11
Number
19
U.S. Geological Survey
mailing and physical address
Pacific Science Center
Santa Cruz
Ca
95060
USA
400 Natural Bridges Drive
(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 2004-1089
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.
SHP
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
5.214
0.181
http://pubs.usgs.gov/of/2006/1251/NCal.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.
20070716
U.S. Geological Survey
mailing and physical address
Pacific Science Center
400 Natural Bridges Drive
Santa Cruz
Ca
95060
USA
(831) 427-4450
(831) 427-4748
Monday through Friday, 8 a.m. to 5 p.m., Eastern Standard Time
None
None
FGDC Content Standards for Digital Geospatial Metadata
FGDC-STD-001-1998
local time
en
http://www.esri.com/metadata/esriprof80.htmlESRI Metadata Profile20070301
Microsoft Windows XP Version 5.1 (Build 2600) Service Pack 2; ESRI ArcCatalog 9.1.0.780
-124.408183
41.997797
38.23257
-122.966247
1
Norcal_intersects_st
-124.408183
41.997797
38.23257
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1
002
Local Area Network
file://\\gisdata\data01\regional\westcoast\shoreline_change\ca_coast\geo\norcal\Norcal_intersects_st.shp
0.181
Shapefile
20070716
14011800
20070301
FALSE
19173700
20060822
10420900
{36B0541F-1D7B-422A-BFE2-AB0FF57A2A63}FALSE
20070716
dataset
ISO 19115 Geographic Information - Metadata
DIS_ESRI1.0
GCS_North_American_1983
6781