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USGS Coastal and Marine Geology Program

Field Activity Details for field activity A703HW

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AKA: none

Other ID: A-7-03-HW

Status: Completed

Organization(s): USGS, Pacific Coastal and Marine Science Center, Stanford University

Funding Program(s): Coral Reefs (MU070)

Principal Investigator(s): Michael Field

Affiliate Investigator(s):

Information Specialist(s): Eric Grossman, Ann Gibbs

Data Type(s): Environmental Data: CTD, Environmental Data: Turbidity, Imagery: Video, Sampling: Chemistry

Scientific Purpose/Goals: Map and sample groundwater discharge into nearshore zone; map suspended sediment concentration and grain size in water column; map benthic cover.


Start Port/Location: Lahaina, Maui

End Port/Location: Lahaina, Maui

Start Date: 2003-07-05

End Date: 2003-07-09

Equipment Used: CTD, opticalbackscattersensor, underwatertelevision, sizedistributionsensor, Niskenbottle

Information to be Derived: Conductivity, temperature salinity, optical backscatter, sediment concentration and 32 sediment-grain size classes of suspended sediments, pH, and chlorophyll in the water column. Scaled video of substrate type, coral cover, and benthic habitats. Ra isotopes of nearshore water to derive mixing models and quantify terrestrial groundwater discharge into near shore. _14C and _13C of near shore waters to quantify terrestrial groundwater discharge into near shore. DIC concentration of near shore water to quantify carbonate chemistry. DOC and POC of near shore water to assess local carbon budget. Nutrient concentration (nitrate, nitrite, ammonium, phosphate) of near shore water to characterize nutrient and calculate flux.

Summary of Activity and Data Gathered:

Staff: Eric Grossman, Jodi Harney, Ann Gibbs

Affiliate Staff:
Adina Paytan (Stanford University) - Collect water samples
Joseph Street (Stanford University) - Collect water samples


Staff information imported from InfoBank
Eric Grossman (acquire CTD/VIDEOdata and collect water samples, USGS WR CMG) - Coordinate and conduct mapping and sampling
Jodi Harney (USGS WR CMG) - Acquire LISST data
Ann Gibbs (USGS WR CMG) - Acquire navigation data
Adina Paytan (Stanford University) - Collect water samples
Joseph Street (Stanford University) - Collect water samples
Mike Field (USGS WR CMG) - Chief Scientist



North: 22.25 South: 18.75 West: -160.25 East: -154.25


photo of Alyce C
Alyce C



FAN A703HW has data viewable in the CMGP Video and Photograph Portal. View the data in this application here. See the instructions for working with this application.

Data Acquired

Survey EquipmentSurvey InfoData Type(s)Data Collected
CTD --- Surveys (geochemical)
Experiments (geochemical)
opticalbackscattersensor --- Turbidity
underwatertelevision --- Video
sizedistributionsensor --- Turbidity
Niskenbottle --- Chemistry

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