Metadata:

Location: Bocas del Toro Archipelago - Bahia Almirante, Panama (9.34031 -82.24204)
Time: Jun 2019 - Apr 2022

Equipment: Fish finder Humminbird HELIX 10 CHIRP SI GPS G2N single beam echosounder (Johnson Outdoors Marine Electronics, Inc., 2019)
Serial #: 17082103-0216

Coordinate Reference System (CRS): WGS 1984 (EPSG: 4326)

Data Acquisition:
Bathymetry, roughness, and hardness were collected using the cost-effective, commercially available Humminbird HELIX 10 CHIRP echosounder, which was mounted on a 22ft vessel. The instrument’s transducer had a high (200-kilohertz) single-beam frequency with a beam cone angle of 20°. It recorded data at a frequency of 1Hz at boat velocities ranging 3-5mph. The spatial resolution between each sonar data point was 1m and 800m between tracks, 400m in the areas where the depths are known to vary rapidly, and 200m in the three main channels that lead to open ocean. The data were collected within three years (2019-2022) and the orientation of the tracks was selected according to the feasibility of the bay and its channels. 

Post-processing:
Using the RM, the outliers of the bathymetry data were deleted (E1 and E2 values were simultaneously processed when processing bathymetry’s noise data), and the tidal correction for bathymetry was done using the Unified Tidal Analysis and Prediction Functions (U-Tide) in the Matlab software.

The sea level measurements were acquired from the Smithsonian Tropical Research Institute's Physical Monitoring Program in Bocas del Toro, Panama. 
https://striresearch.si.edu/physical-monitoring/rtg-bocas-del-toro/#Tide-Gauge-4w

(For accessing this dataset, please contact the Physical Monitoring Program team).

Post-Process summary:
- Outliers deleted using RM
- Tide corrected using Matlab 
- All values <0 in E1, E2, and PeakSV have been deleted
- All values <0.5m in depth have been deleted.