Field Activity 2020-620-FA

Identifier 2020-620-FA
Alternate names Ofu USGS-NPS Study
Purpose Investigate geophysical controls on algal outbreaks over NPS coral reefs
Location Ofu, American Samoa
Info derived Investigate geophysical controls on algal outbreaks over NPS coral reefs
Comments Entries for this field activity are based on entries from Field Activity 2020-601-FA
Kayak-type Platform
Start Ofu, American Samoa 2020-08-24
End Ofu, American Samoa 2022-08-10
Days in the field 18
Activity events
Start date End date Description
2022-07-21 2022-08-10 Field work included water sample retrieval, oceanographic sensor retrieval and coral coring.
West -170.89782715
East -169.33776855
North -14.06465236
South -14.40275938
Marine operations Yes
Scuba operations Yes


2885 Mission Street
Santa Cruz, CA95060
(831) 460-7401
Principal investigators Ferdinand K Oberle
Crew members
Cordell Johnson
Scientist, Staff
Rachel K Marcuson
Scientist, Staff
Information specialist(s)
Joshua Logan
Specialist, Information
Affiliate principal Eric Brown (NPS)

Data types and categories

Data category: Sampling, Electro-Magnetic, Environmental Data, Imagery, Time Series
Data type: Biology, Resistivity, Conductivity, Current, Radon, Temperature, Tide, Wave, Other Imagery, Mooring (physical oceanography)

Equipment used

Equipment Usage description Data types Datasets
coral_core Biology (no data reported)
Supersting R8 Resistivity (no data reported)
CT sensor Conductivity, Temperature (no data reported)
radonmonitor Radon (no data reported)
current meter Current (no data reported)
wavegauge Wave (no data reported)
wave/tide gauge Tide, Wave (no data reported)
FLIR thermal camera Other Imagery (no data reported)
instrumentmooring Mooring (physical oceanography) (no data reported)


Samples collected during this field activity