Potential volume for CO2 deep ocean sequestration: an assessment of the area located on western Pacific Ocean
Journal
Stoch Environ Res Risk Assess
Journal Volume
24
Journal Issue
5
Pages
705--711
Date Issued
2009-11
Author(s)
Abstract
Captured CO 2 could be deliberately injected into the ocean at great depth, where most of it would remain isolated from the atmosphere for centuries. CO 2 can be transported via pipeline or ship for release in the ocean or on the sea floor. In Taiwan, CO 2 release is preliminarily projected from 2010 to 2030 in an average amount of 6. 957 Gt within this duration. If deep sea sequestration for CO 2 can be the possible option in Taiwan, it seems to exists possible potential area delimited between 122.0°E to 122.5°E and 21.8°N to 22.3°N for CO 2 sequestration on account of its isolated and flat topography. Apparently, the area to the southeast of Taiwan is found to reach a depth deeper than -3,000 m and can be taken as a testing area for pilot studies. This study searches the area using the contours from the depth of -4,554 to -5,500 m with 1-m interval; the area, topographic volume, maximum mean height (volume/area), and ocean volume are reported. If the emission rate is kept constantly, for 20-year storage it needs 3 m of thickness reaching the sea ridge at the depth -4,554 m using top-down style; for 100 years of storage it needs 12 m. On the other hand, if it accounts for the bottom the sea floor is taken as the reference and the accumulated CO 2 is stored from the depth at -4,900 m using bottom-up style, it requires about 37 m for the 20-year storage and 61 m for one decade. © 2009 Springer-Verlag.
SDGs
Type
journal article