Citation:
Citation_Information:
Originator: Christine J. Kranenburg
Originator: Andrew C. Ritchie
Originator: Jenna A. Brown
Originator: Jin-Si R. Over
Originator: Daniel Buscombe
Originator: Christopher R. Sherwood
Originator: Jonathan A. Warrick
Originator: Phillipe A. Wernette
Publication_Date: 20201130
Title:
Post-Hurricane Florence Aerial Imagery: Cape Fear to Duck, North Carolina, October 6-8, 2018
Geospatial_Data_Presentation_Form: remote-sensing image
Series_Information:
Series_Name: U.S. Geological Survey Data Release
Issue_Identification: doi:10.5066/P91KB9SF
Publication_Information:
Publication_Place:
St. Petersburg Coastal and Marine Science Center, St. Petersburg, Florida
Publisher: U.S. Geological Survey
Online_Linkage: https://doi.org/10.5066/P91KB9SF
Description:
Abstract:
The U.S. Geological Survey (USGS) Remote Sensing Coastal Change (RSCC) project collects aerial imagery along coastal swaths, in response to storm events, with optimized endlap/sidelap and precise position information to create high-resolution orthomosaics, three-dimensional (3D) point clouds, and digital elevation/surface models (DEMs/DSMs) using Structure-from-Motion (SfM) photogrammetry methods. These products are valuable for measuring topographic change, and for understanding coastal vulnerability and response to disturbance events.
A nadir (vertical) aerial imagery survey was conducted from Cape Fear to Duck, North Carolina on October 6-8, 2018, in response to Hurricane Florence. The observations along the coastline cover an area approximately 275 kilometers long and 300 to 700 meters (m) wide and encompass both highly developed towns as well as natural undeveloped areas, including the federal lands of Cape Lookout National Seashore and Cape Hatteras National Seashore. Low-altitude (300 m above ground level) digital aerial imagery were acquired from a manned, fixed-wing Piper P28A aircraft using a Sony A7R 36 Megapixel digital camera, along with precise aircraft navigation Global Navigation Satellite System (GNSS) data. Data were collected in shore-parallel lines, flying at approximately 50 meters per second (m/s) and capturing true color imagery at 1 Hertz (Hz), resulting in image footprints with approximately 75-80% endlap, 60-70% sidelap, and 5.3-centimeter (cm) ground sample distance (GSD). The precise time of each image capture (flash event) was recorded, and the corresponding aircraft position was computed in post-processing from the aircraft navigation GNSS data; precise image positions can then be determined by accounting for the lever arm offsets between the aircraft GNSS antenna and the camera lens. Position data, provided as latitude/longitude/ellipsoid height, is referenced to the North American Datum of 1983 (NAD83 (2011)).
Purpose:
These 37,456 aerial images were collected over multiple days along the coast of the Outer Banks, North Carolina, with sufficient resolution and endlap/sidelap to produce Structure-from-Motion (SfM) photogrammetry products in order to observe coastal impacts due to Hurricane Florence.
Supplemental_Information:
These data were collected by the USGS Coastal and Marine Hazards and Resources Program under the USGS field activity number (FAN) 2018-303-CNT, and the associated field activity web page contains additional information regarding the field activity:
https://cmgds.marine.usgs.gov/fan_info.php?fan=2018-303-CNT.
Aerial imagery was collected over multiple days in order to cover the entire survey area; acquisition was timed to coincide with low tide along the beach areas to ensure maximum shoreline extent was captured. Bounding coordinates for the aerial survey are derived from the overall flight path and are not necessarily representative of the imagery coverage.
Time_Period_of_Content:
Time_Period_Information:
Multiple_Dates/Times:
Single_Date/Time:
Calendar_Date: 20181006
Single_Date/Time:
Calendar_Date: 20181007
Single_Date/Time:
Calendar_Date: 20181008
Currentness_Reference: ground condition
Status:
Progress: Complete
Maintenance_and_Update_Frequency: None planned
Spatial_Domain:
Bounding_Coordinates:
West_Bounding_Coordinate: -78.1627583734
East_Bounding_Coordinate: -75.4610244200
North_Bounding_Coordinate: 36.2191029662
South_Bounding_Coordinate: 33.8314148703
Keywords:
Theme:
Theme_Keyword_Thesaurus: USGS Metadata Identifier
Theme_Keyword: USGS:41b0f06b-9c3d-4fad-9a3e-13c1a76f1257
Theme:
Theme_Keyword_Thesaurus: USGS Thesaurus
Theme_Keyword: remote sensing
Theme_Keyword: aerial photography
Theme_Keyword: image collections
Theme_Keyword: geospatial datasets
Theme_Keyword: coastal processes
Theme_Keyword: geomorphology
Theme_Keyword: hurricanes
Theme:
Theme_Keyword_Thesaurus: None
Theme_Keyword: U.S. Geological Survey
Theme_Keyword: USGS
Theme_Keyword: Coastal and Marine Hazards and Resources Program
Theme_Keyword: CMHRP
Theme_Keyword: hurricane
Theme_Keyword: aerial imagery
Theme:
Theme_Keyword_Thesaurus: ISO 19115 Topic Category
Theme_Keyword: geoscientificInformation
Theme_Keyword: imageryBaseMapsEarthCover
Theme_Keyword: oceans
Place:
Place_Keyword_Thesaurus: Geographic Names Information Service (GNIS)
Place_Keyword: North Carolina
Place_Keyword: Outer Banks
Place_Keyword: Cape Hatteras National Seashore
Place_Keyword: Cape Lookout National Seashore
Place_Keyword: Cape Fear
Temporal:
Temporal_Keyword_Thesaurus: None
Temporal_Keyword: October 2018
Temporal_Keyword: Post-Hurricane Florence
Access_Constraints: none
Use_Constraints:
USGS-authored or produced data and information are in the public domain from the U.S. Government and are freely redistributable with proper metadata and source attribution. Please recognize and acknowledge the U.S. Geological Survey as the originator of the dataset and in products derived from these data.
Point_of_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Christine J. Kranenburg
Contact_Organization:
U.S. Geological Survey, St. Petersburg Coastal and Marine Science Center
Contact_Address:
Address_Type: Physical and Mailing
Address: 600 4th Street South
City: St. Petersburg
State_or_Province: FL
Postal_Code: 33701
Country: USA
Contact_Voice_Telephone: 727-502-8000
Contact_Electronic_Mail_Address: ckranenburg@usgs.gov
Browse_Graphic:
Browse_Graphic_File_Name:
Browse_Graphic_File_Description:
Regional map of survey area along the Outer Banks, North Carolina, during USGS field activity 2018-303-CNT.
Browse_Graphic_File_Type: JPG
Browse_Graphic:
Browse_Graphic_File_Name:
Browse_Graphic_File_Description:
This map, found within the zip file listed above, shows the extent of Area 1 in the regional map for the post-Hurricane Florence aerial images from Cape Fear, North Carolina, to Topsail Beach, North Carolina. The flight paths were divided into 3-minute latitudinal segments, represented by alternating purple and yellow lines, and images for each segment are contained in zip files named according to the four-digit latitude (degree/minute) of the southern boundary.
Browse_Graphic_File_Type: JPG
Browse_Graphic:
Browse_Graphic_File_Name:
Browse_Graphic_File_Description:
This map, found within the zip file listed above, shows the extent of Area 2 in the regional map for the post-Hurricane Florence aerial images from New Inlet, North Carolina, to the North Core Banks of Cape Lookout National Seashore, North Carolina. The flight paths were divided into 3-minute latitudinal segments, represented by alternating purple and yellow lines, and images for each segment are contained in zip files named according to the four-digit latitude (degree/minute) of the southern boundary. Some segments are further divided to limit the zip files to 20 GB and are identified by labels (a-e); all portions of a segment must be downloaded to ensure full coverage.
Browse_Graphic_File_Type: JPG
Browse_Graphic:
Browse_Graphic_File_Name:
Browse_Graphic_File_Description:
This map, found within the zip file listed above, shows the extent of Area 3 in the regional map for the post-Hurricane Florence aerial images from the North Core Banks of Cape Lookout National Seashore, North Carolina, to Avon, North Carolina. The flight paths were divided into 3-minute latitudinal segments, represented by alternating purple and yellow lines, and images for each segment are contained in zip files named according to the four-digit latitude (degree/minute) of the southern boundary. Some segments are further divided to limit the zip files to 20 GB and are identified by labels (a-e); all portions of a segment must be downloaded to ensure full coverage.
Browse_Graphic_File_Type: JPG
Browse_Graphic:
Browse_Graphic_File_Name:
Browse_Graphic_File_Description:
This map, found within the zip file listed above, shows the extent of Area 4 in the regional map for the post-Hurricane Florence aerial images from Avon, North Carolina, to Duck, North Carolina. The flight paths were divided into 3-minute latitudinal segments, represented by alternating purple and yellow lines, and images for each segment are contained in zip files named according to the four-digit latitude (degree/minute) of the southern boundary. Some segments are further divided to limit the zip files to 20 GB and are identified by labels (a-e); all portions of a segment must be downloaded to ensure full coverage.
Browse_Graphic_File_Type: JPG
Data_Set_Credit:
Data collection was funded by the U.S. Geological Survey. The authors would like to thank pilot Wayne Wright of C.W. Wright Consulting for data acquisition and systems expertise.
