Dissolution kinetics of calcium carbonate in equatorial Pacific sediments
- Univ. of Southern California, Los Angeles, CA (United States)
Calcium carbonate dissolution exerts a major influence on the carbonate chemistry of seawater and is an important factor in regulating atmospheric CO2 concentration. The authors use a numerical model, based on an estimate of k determined from benthic chamber flux measurements, the distribution of CO3 2-in the water column and percent of CaCO3 in the sediments, to derive the total alkalinity flux from Pacific Ocean sediments. The significance of this budget is discussed as are the following questions: what is the rate of calcium carbonate dissolution on the deep sea floor what controls carbonate dissolution, organic carbon rain rates, or bottom water carbonate ion concentration what is the equations that relates carbonate dissolution to degree of undersaturation and what is the associate rate constant 43 refs., 10 figs., 4 tabs.
- OSTI ID:
- 6955955
- Journal Information:
- Global Biogeochemical Cycles; (United States), Journal Name: Global Biogeochemical Cycles; (United States) Vol. 8:2; ISSN 0886-6236; ISSN GBCYEP
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
540120 -- Environment
Atmospheric-- Chemicals Monitoring & Transport-- (1990-)
540320* -- Environment
Aquatic-- Chemicals Monitoring & Transport-- (1990-)
ALKALINE EARTH METAL COMPOUNDS
CALCIUM CARBONATES
CALCIUM COMPOUNDS
CARBON COMPOUNDS
CARBON DIOXIDE
CARBON OXIDES
CARBONATES
CHALCOGENIDES
DISSOLUTION
ECOLOGICAL CONCENTRATION
GLOBAL ASPECTS
HYDROGEN COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
PACIFIC OCEAN
SEAS
SEAWATER
SEDIMENTS
SURFACE WATERS
WATER