1 / 7

OTEC Environmental Impact

OTEC Environmental Impact. Warm Water Intake: Entrainment Impingement. Biota attraction or avoidance. Operational Noise. OTEC. Discharge Plume: Redistribution of nutrients Algae blooms Altered temperature and pH Where will it settle?. Cold water intake: Entrainment.

orlando
Download Presentation

OTEC Environmental Impact

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. OTEC Environmental Impact • Warm Water Intake: • Entrainment • Impingement Biota attraction or avoidance Operational Noise OTEC • Discharge Plume: • Redistribution of nutrients • Algae blooms • Altered temperature and pH • Where will it settle? • Cold water intake: • Entrainment

  2. OTEC Environmental Impact • 1981 EIS+: update to current oceanographic standards • What data do we need? Stakeholder meeting, June 2010 • Oceanography: baseline nutrients, carbon cycle, T, S, O • Plankton, fish larvae: distributions and density • Megafauna habitat use • What data is already available? NOAA. 1981. Ocean thermal energy conversion final environmental impact statement.” OME. NOAA. 2010. “OTEC: Assessing potential physical, chemical, and biological impacts and risks.” CRRC. 39pp.

  3. Discharge plume: what data is available? The Hawaii Ocean Time Series (HOTS) • 1989 – present • Temperature, Salinity, oxygen, pH, chlorophyll a Gaps in data: • Nutrients (1989-2001 only) • Alkalinity and DIC at deep depths • Trace metals

  4. Entrainment: Warm Water Pipe Boehlert and Mundy 1994. Mar Ecol. Prog. Ser. 107:1-13 +Seapy. 2008. Mar. Biol. 154(6): 985-995 ++Poe and Norenburg. 1999.Deep-Sea Res. (1 Oceanogr. Res. Pap.)  46(7): 1201-1220

  5. Entrainment: Cold Water Pipe Flow rate of 0.8m3/s Compare to pilot plant: 25m3/s and commercial plant: 500m3/s West Hawai’i Explorations Academy

  6. Baseline monitoring • Stakeholder meeting++ • Oceanography : 3 years • Ichthyoplankton: 1 year+ • Marine Mammals and turtles: 1 year • Plankton: 2 years • Taking into account available datasets….

  7. Baseline Monitoring Suggestions 1 year: Nutrients, trace metals, and deep water carbon cycle cafethorium.whoi.edu Discrete-depth sampling for bacteria, copepods, total biomass Consistent monitoring of CWP at NELHA Don’t forget: Background acoustics Fishing/backscatter for nekton Megafaunal habitat use

More Related