1. Coastal and Marine Hazards and Resources
  2. Geoscience Data System

Field Activity 2021-624-FA

Identifier 2021-624-FA
Alternate names Whales Tail Marsh Aerial Mapping, 2021 to 2023
Purpose Aerial imagery will be used to map the position of the marsh edge. Ground control points will be placed and surveyed prior to the acquisition of aerial imagery.
Location Eden Landing Ecological Reserve, Alameda County, CA, USA
Summary Aerial imagery of Whale Tail Marsh collected by vendor (The 111th Aerial) from manned aircraft using a Hasselblad A6D/80mm calibrated survey camera on the following dates: 2021-05-30, 2021-09-09, and 2021-11-14. Imagery to be used for SfM photogrammetry. GCP markers placed and measured by USGS PCMSC staff using RTK/PPK GNSS on 2021-05-19 and 2021-07-28.
Info derived precise locations of ground control points, elevation, imagery
Projects
Platform
Other
Vehicles
MarFac; Expedition G62-3094P
Itinerary
Start Union City, CA 2021-05-17
End Union City, CA 2023-12-31
Days in the field 4
Activity events
Start date End date Description
2021-05-19 2021-05-19 Ground control points installed.
2021-05-30 2021-05-30 Imagery acquisition event.
2021-07-28 2021-07-28 Ground control points revisited for GPS measurements.
2021-09-09 2021-09-09 Imagery acquisition event.
2021-11-14 2021-11-14 Imagery acquisition event.
2022-02-04 2022-02-04 Ground control points revisited for GPS measurements.
2022-02-10 2022-02-10 Imagery acquisition event.
2022-05-19 2022-05-19 Imagery acquisition event.
2022-10-05 2022-10-05 Ground control points revisited for GPS measurements.
2022-10-07 2022-10-07 Imagery acquisition event.
2023-03-24 2023-03-24 Ground control points revisited for GPS measurements.
2023-03-27 2023-03-27 Imagery acquisition event.
2023-10-17 2023-10-17 Ground control points revisited for GPS measurements.
2023-11-08 2023-11-08 Imagery acquisition event.
2024-04-02 2024-04-02 Ground control points revisited for GPS measurements.
2024-04-07 2024-04-07 Imagery acquisition event.
Bounds
West -122.15045929
East -122.1295166
North 37.60824808
South 37.57941251
Marine operations Yes

Personnel

Organization
2885 Mission Street
Santa Cruz, CA95060
(831) 460-7401
Principal investigators Jessica R Lacy
Crew members
Jessica R Lacy
Scientist, Staff
Joshua Logan
Scientist, Staff
Information specialist(s)
Joshua Logan
Specialist, Information

Data types and categories

Data category: Imagery, Location-Elevation
Data type: Photo, Benchmarks

Equipment used

Equipment Usage description Data types Datasets
Structure from Motion - crewed aircraft Photo 2
Trimble R10 Benchmarks, LIDAR, Navigation, Profiles, Transects (no data reported)

Datasets

Datasets produced in this activity

Dataset name Equipment Description Dataset contact
Digital Surface Models (DSMs) Structure from Motion - crewed aircraft This portion of the data release presents digital surface models (DSM) of the Whale's Tail Marsh region of South San Francisco Bay, CA. The DSMs have resolutions of 5 centimeters per pixel and were derived from structure-from-motion (SfM) processing of repeat aerial imagery collected from fixed-wing aircraft. Joshua Logan
Orthomosaic images Structure from Motion - crewed aircraft This portion of the data release presents orthomosaic images of the Whale's Tail Marsh region of South San Francisco Bay, CA. The orthomosaics have resolutions of 2.5 centimeters per pixel and were derived from structure-from-motion (SfM) processing of repeat aerial imagery collected from fixed-wing aircraft. Joshua Logan

Publications

Samples collected during this field activity