Jacque Kelly University of Hawaii at Manoa. After Oki et al 1999.

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Presentation transcript:

Jacque Kelly University of Hawaii at Manoa

After Oki et al 1999

TracerGroundwaterOceanMethod TemperatureColdWarmTIR Multiparameter Meter SalinityLow/HighHighMultiparameter Meter SilicaVery HighLowNutrient Analysis RadonVery HighLowIn-situ radon measurements RadiumVery HighLowWater collection for later measurement

Infrared Camera μm Infrared Camera μm Thermistors Sea Surface Water Temperature Top < 1 mm of water 3.2 m resolution 0.5 ° C resolution Sea Surface Water Temperature Top < 1 mm of water 3.2 m resolution 0.5 ° C resolution 2133 m GPS-INS

RAD-7 Submersible Pump Submersible Pump GPS & Depth Sounder GPS & Depth Sounder Air-Water Exchanger Air-Water Exchanger Multi-parameter Meter Multi-parameter Meter

After Johnson et al 2008

Easy determination of surface plume size Point source vs diffuse flow Tidally-modulated flow? Numerous locations along coastline Ocean-mixing characteristics After Johnson et al 2008

PEARL CITY PENINSULA HOUSING PEARL CITY PENINSULA HOUSING

PEARL CITY PENINSULA HOUSING PEARL CITY PENINSULA HOUSING

Rn concentration higher at intermediate depth than at surface High Rn concentration Extends from the coastline about 65 meters at depth Lens of fresher water underneath the main seawater column

Linking air-based and ground-based techniques provides a more comprehensive view of SGD than either technique alone Provide clues about the scale, character, and distribution of SGD over multiple time scales and investigation scales (local to regional)