Jacquelyn R. Overbeck
Kara S. Doran
20150425
National Assessment of Hurricane-Induced Coastal Erosion Hazards: Gulf of Mexico Bradenton Beach to Clearwater Beach, Florida Raw (non-interpolated) Beach Slope Point Data
tabular digital data
U.S. Geological Survey Data Release
doi:10.5066/F7XK8CK2
St. Petersburg, FL
U.S. Geological Survey
https://doi.org/10.5066/F7XK8CK2
The National Assessment of Coastal Change Hazards project derives beach morphology features from lidar elevation data for the purpose of understanding and predicting storm impacts to our nation's coastlines. This dataset defines beach slopes along the United States Southeast Gulf of Mexico from Bradenton Beach to Clearwater Beach, Florida for data collected at various times between 1998 and 2010.
To provide raw, non-interpolated endpoint slope data between the location of the Mean High Water and seaward-most dune toe elevations. This dataset, GFL_Raw_Slopes.txt, and others associated with this project can be accessed online at https://doi.org/10.5066/F7XK8CK2.
The USGS Saint Petersburg Coastal and Marine Science Center (SPCMSC) - St. Petersburg, Fla., assigns a unique identifier (called a Field Activity Number, or FAN) to each cruise or field activity. The following FANs are associated with this activity: 98LTS05, 04CNT01, 04CNT05, 07CNT01, 06CNT03, and 10CNT08.
19981029
20100722
Ground condition
As needed. Data are updated when new lidar surveys are available.
-82.851941
-82.689567
28.048860
27.439916
USGS Metadata Identifier
USGS:1c89f352-e494-4752-a3f1-20921ea985df
General
U.S. Geological Survey
USGS
St. Petersburg Coastal and Marine Science Center
Coastal and Marine Geology Program
CMGP
SPCMSC
ISO 19115 Topic Category
coastal
slope
environment
Data Categories for Marine Planning
distributions
bathymetry and elevation
Marine Realms Information Bank (MRIB) Keywords
altimetry
topographic mapping
USGS Thesaurus
LIDAR
topography
digital elevation models
General
United States of America
Gulf of Mexico
Florida
Bradenton Beach, Florida
Clearwater Beach, Florida
Tampa Bay, Florida
None
The U.S. Geological Survey requests to be acknowledged as originators of the data in future products or derivative research.
U.S. Geological Survey
Jacquelyn R. Overbeck
mailing and physical
600 4th Street South
Saint Petersburg
FL
33701
UNITED STATES
727-502-8104
727-502-8001
joverbeck@usgs.gov
Microsoft Windows 7 Version 6.1 (Build 7600); ESRI ArcGIS 10.2.2.4000; MATLAB R2014b
Data gaps exist where there are no sandy shorelines (such as over inlets, marshes, or rocky coasts). For each 400-meter window width, data will be given a null value if greater than 50% of points are missing. For inlets narrower than the 400 m window, only slopes associated with the data on either side of the inlet were computed. No additional checks for consistency were performed on this data.
These data include beach and dune morphology in the form of raw beach slopes.
Horizontal accuracy was not estimated.
Vertical accuracy for beach and dune morphology (dune crest and toe elevation) data is dependent on the positional accuracy of the lidar data. Estimated accuracy of lidar surveys is +/- 15 centimeters. However, vertical accuracies may vary based on the type of terrain (for example, inaccuracies may increase as slope increases or with the presence of extremely dense vegetation) and the accuracy of the GPS and aircraft-attitude measurements.
Department of Commerce (DOC), National Oceanic and Atmospheric Administration (NOAA), National Ocean Service (NOS), Office for Coastal Management (OCM)
United States Geological Survey (USGS)
National Aeronautics and Space Administration (NASA)
20000101
1998 Fall Gulf Coast NOAA/USGS/NASA Airborne Lidar Assessment of Coastal Erosion (ALACE) Project for the US Coastline
http://coast.noaa.gov/dataviewer/index.html?action=advsearch&qType=in&qFld=ID&qVal=22
Online digital data
19981029
19981109
The date when lidar surveys were conducted.
NOAA98
Lidar-derived elevation data collected by this source was used to estimate dune morphology variables.
Joint Airborne Lidar Bathymetry Technical Center of Expertise (JALBTCX)
20141114
2004 US Army Corps of Engineers (USACE) Topo/Bathy Lidar: Alabama, Florida, Mississippi and North Carolina
ftp://coast.noaa.gov/pub/DigitalCoast/lidar1_z/geoid12a/data/19
Online digital data
20040401
20040925
The dates when lidar surveys were conducted.
USACE04a
Lidar-derived elevation data collected by this source was used to estimate dune morphology variables.
Joint Airborne Lidar Bathymetry Technical Center of Expertise (JALBTCX)
20141114
2004 US Army Corps of Engineers (USACE) Post-Hurricane Ivan Topo/Bathy Lidar: Alabama, Florida
ftp://coast.noaa.gov/pub/DigitalCoast/lidar1_z/geoid12a/data/37
Online digital data
20041101
20041231
The dates when lidar surveys were conducted.
USACE04b
Lidar-derived elevation data collected by this source was used to estimate dune morphology variables.
Joint Airborne Lidar Bathymetry Technical Center of Expertise (JALBTCX)
20141114
2006 United States Army Corps of Engineers (USACE) Post Hurricane Wilma Lidar: Hurricane Pass to Big Hickory Pass, FL
ftp://coast.noaa.gov/pub/DigitalCoast/lidar1_z/geoid12a/data/44
Online digital data
20060528
20060610
The dates when lidar surveys were conducted.
USACE06
Lidar-derived elevation data collected by this source was used to estimate dune morphology variables.
Florida Division of Emergency Management (FDEM)
Department of Commerce (DOC), National Oceanic and Atmospheric Administration (NOAA), National Ocean Service (NOS), Office for Coastal Management (OCM)
20141209
2007 Florida Division of Emergency Management (FDEM) Lidar Project: Southwest Florida
ftp://coast.noaa.gov/pub/DigitalCoast/lidar1_z/geoid12a/data/529
Online digital data
20070618
20070830
The dates when lidar surveys were conducted.
FDEM07
Lidar-derived elevation data collected by this source was used to estimate dune morphology variables.
Department of Commerce (DOC), National Oceanic and Atmospheric Administration (NOAA), National Ocean Service (NOS), Office for Coastal Management (OCM)
Joint Airborne Lidar Bathymetry Technical Center of eXpertise (JALBTCX)
20141114
2010 US Army Corps of Engineers (USACE) Joint Airborne Lidar Bathymetry Technical Center of Expertise (JALBTCX) Lidar: Gulf Coast of Florida
ftp://coast.noaa.gov/pub/DigitalCoast/lidar1_z/geoid12a/data/1073
Online digital data
20100620
20100722
The dates when lidar surveys were conducted.
USACE10
Lidar-derived elevation data collected by this source was used to estimate dune morphology variables.
For dune morphology data: Elevation data from lidar surveys were interpolated in MATLAB R2014b to a gridded domain that was rotated parallel to the shoreline and had a resolution of 10 m in the alongshore direction and 2.5 m in the cross-shore direction. The interpolation method applies spatial filtering with a Hanning window that is twice as wide as the grid resolution. Dune morphology data are extracted from the elevation grid in MATLAB. Beach slopes were extracted between endpoint locations of the Mean High Water and dune toe elevations. More details on the methodology can be found in the USGS Open-File Report, "A method for determining average beach slope and beach slope variability for U.S. sandy coastlines", available at http://pubs.usgs.gov/of/2015/1053
20150330
Keywords section of metadata optimized for discovery in USGS Coastal and Marine Geology Data Catalog.
20170124
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 section with USGS persistent identifier as theme keyword.
20201013
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
Point
Entity Point
4936
0.0197843295
0.0229959585
Decimal Degrees
D WGS 1984
WGS 1984
6378137.0
298.257223563
GFL_Raw_Slopes.txt
Lidar-derived beach slope. Measured as the endpoint slope between the locations of dune toe and Mean High Water elevation. Values of -999 represent “no data” values. Lidar-derived attributes collected over multiple days include “co” in the Attribute_Label. This abbreviation, combined days, is shortened to keep similar naming structure as data collected on a single day.
USGS
Longitude
Longitude of interpolated shoreline position in decimal degrees.
USGS
-82.851941
-82.689567
Decimal Degrees
Latitude
Latitude of interpolated shoreline position in decimal degrees.
USGS
27.439916
28.04886
Decimal Degrees
slope199810co
Raw beach slopes calculated using October 1998 lidar-derived elevation data.
USGS
0.003297
0.221875
Radians
slope200404co
Raw beach slopes calculated using April 2004 lidar-derived elevation data.
USGS
0.004454
0.098482
Radians
slope200411co
Raw beach slopes calculated using November 2011 lidar-derived elevation data.
USGS
0.006052
0.124467
Radians
slope200606co
Raw beach slopes calculated using June 2006 lidar-derived elevation data.
USGS
0.002905
0.132051
Radians
slope200707co
Raw beach slopes calculated using July 2007 lidar-derived elevation data.
USGS
0.000735
0.145526
Radians
slope201006co
Raw beach slopes calculated using June 2006 lidar-derived elevation data.
USGS
0.004468
0.18382
Radians
U.S. Geological Survey (USGS)
Jacquelyn R. Overbeck
mailing and physical
600 4th Street South
Saint Petersburg
FL
33701
727-502-8104
727-502-8001
joverbeck@usgs.gov
Although these data have been processed successfully on a computer system at the USGS, no warranty expressed or implied is made regarding the display or utility of the data on any other system, or for general or scientific purposes, nor shall the act of distribution constitute any such warranty. The USGS shall not be held liable for improper or incorrect use of the data described and/or contained herein. Any use of trade, firm, or product names is for descriptive purposes only and does not imply endorsement by the U.S. Government.
text file
none
https://coastal.er.usgs.gov/data-release/doi-F7XK8CK2/data/GFL_beach_slopes/GFL_Raw_slopes.txt
Data is accessible online at https://doi.org/10.5066/F7XK8CK2
none
20201013
U.S. Geological Survey (USGS)
Jacquelyn R. Overbeck
mailing and physical
600 4th Street South
Saint Petersburg
FL
33701
UNITED STATES
727-502-8104
727-502-8001
joverbeck@usgs.gov
FGDC Content Standard for Digital Geospatial Metadata
FGDC-STD-001-1998
local time