AKA: none
Other ID: Ofu USGS-NPS Study
Status: Completed
Organization(s): USGS, Pacific Coastal and Marine Science Center
Funding Program(s): Past, Present and Future Coral Reefs (ZP00FRV)
Principal Investigator(s): Ferdinand Oberle
Affiliate Investigator(s): Eric Brown (NPS)
Information Specialist(s): Joshua Logan
Data Type(s): Sampling: Chemistry, Electro-Magnetic: Resistivity, Environmental Data: Conductivity, Environmental Data: Current, Environmental Data: Radon, Environmental Data: Temperature, Environmental Data: Tide, Environmental Data: Wave, Imagery: Other Imagery, Time Series: Mooring (physical oceanography)
Scientific Purpose/Goals: Investigate geophysical controls on algal outbreaks over NPS coral reefs
Vehicle(s): None
Start Port/Location: Ofu, American Samoa
End Port/Location: Ofu, American Samoa
Start Date: 2020-01-27
End Date: 2020-02-13
Equipment Used: sampling equipment, Supersting R8, CT sensor, radonmonitor, current meter, wavegauge, wave/tide gauge, FLIR thermal camera, instrumentmooring
Information to be Derived: Investigate geophysical controls on algal outbreaks over NPS coral reefs
Summary of Activity and Data Gathered: Bottom-mounted oceanographic instrumentation was deployed to monitor tides, waves, current, salinity, and water temperature. Kayak-based CTD tows were performed to map surface salinity and temperature. Water samples were collected for nutrients. Time-series thermal camera towers were deployed to monitor sea-surface temperatures. UAS-based time-series thermal mapping was conducted to map sea-surface temperatures. Electrical resistivity surveys were performed to map groundwater.
Staff: Cordell Johnson, Rachel Marcuson
Affiliate Staff:
Notes:
Location:
Ofu, American Samoa
| Boundaries | |||
|---|---|---|---|
| North: -14.2 | South: -14.1 | West: 169.6 | East: 169.7 |
Platform(s):
Other |
Prouty, N.G., 2025, Water and algal chemistry measurements collected from the National Park Service's National Park of American Samoa (NPS-NPSA) Ofu Island unit: U.S. Geological Survey data release, https://doi.org/10.5066/P1DVZPUV.
Rosenberger, K.J., Cheriton, O.M., and Storlazzi, C.D., 2024, Cross-reef wave and water level data from coral reef environments (ver. 3.0, January 2024): U.S. Geological Survey data release, https://doi.org/10.5066/P9RYN5NH.
| Survey Equipment | Survey Info | Data Type(s) | Data Collected |
|---|---|---|---|
| sampling equipment | --- | Biology Chemistry Geology Experiments (biological) Sediment Properties | |
| Supersting R8 | --- | Resistivity | |
| CT sensor | --- | Conductivity Temperature | |
| radonmonitor | --- | Radon | |
| current meter | --- | Current | |
| wavegauge | --- | Wave | Rincon, Puerto Rico, wave and water level data, 2020 (Time series data of wave height and water surface elevation were acquired for 135 days at six locations off of the west coast of Rincon, Puerto Rico) |
| wave/tide gauge | --- | Tide Wave | |
| FLIR thermal camera | --- | Other Imagery | |
| instrumentmooring | --- | Geology Mooring (physical oceanography) |
