GAS-EXCHANGE IN A CONTAMINATED ESTUARY INFERRED FROM CHLOROFLUOROCARBONS

被引：13

作者：

CLARK, JF ^{[1
]}

SIMPSON, HJ ^{[1
]}

SMETHIE, WM ^{[1
]}

TOLES, C ^{[1
]}

机构：

[1] COLUMBIA UNIV,DEPT GEOL SCI,PALISADES,NY 10964

来源：

GEOPHYSICAL RESEARCH LETTERS | 1992年 / 19卷 / 11期

关键词：

D O I：

10.1029/92GL00558

中图分类号：

P [天文学、地球科学];

学科分类号：

07 ;

摘要：

A new method of quantifying mean rates of gas exchange for natural water systems using the distribution of pollutant chlorofluorocarbons (CFCs) is presented. Concentrations of dissolved CCl3F (F-11), CCl2F2 (F-12), and CCl2FCClF2 (F-113) in the Hudson estuary are supersaturated with respect to the remote troposphere by as much as an order of magnitude. The most plausible source appears to be discharges from waste water treatment facilities. Loss of these compounds from the estuary water to the atmosphere occurs both upstream and downstream of the zone of input. Using a multi-box model, gas exchange coefficients were calculated to be between 2 and 4 cm hr-1 based on the observed concentrations. This rate of gas exchange is similar to values determined in lakes and coastal bays and substantially lower than the mean value for the open ocean.

引用

页码：1133 / 1136

页数：4

共 18 条

[1] REVISED PARAMETERS FOR MODELING THE TRANSPORT OF PCB COMPONENTS ACROSS AN AIR WATER INTERFACE
BOPP, RF
[J]. JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS, 1983, 88 (NC4) : 2521 - 2529
[2] THE DISTRIBUTION OF BOMB RADIOCARBON IN THE OCEAN
BROECKER, WS
PENG, TH
OSTLUND, G
STUIVER, M
[J]. JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS, 1985, 90 (NC4): : 6953 - 6970
[3] BUSENBERG E, 1991, USGS914034 WAT RES I
[4] GEOCHEMISTRY AND LOADING HISTORY OF PHOSPHATE AND SILICATE IN THE HUDSON ESTUARY
CLARK, JF
SIMPSON, HJ
BOPP, RF
DECK, B
[J]. ESTUARINE COASTAL AND SHELF SCIENCE, 1992, 34 (03) : 213 - 233
[5] DAJARDIAM CL, 1991, ASSESSMENT POLLUTANT
[6] DECK BL, 1981, THESIS COLUMBIA U
[7] DYRSSEN D, 1990, Tellus Series B Chemical and Physical Meteorology, V42, P162, DOI 10.1034/j.1600-0889.1990.t01-1-00002.x
[8] GAS-EXCHANGE RATES ACROSS THE SEDIMENT-WATER AND AIR-WATER INTERFACES IN SOUTH SAN-FRANCISCO BAY
HARTMAN, B
HAMMOND, DE
[J]. JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS, 1984, 89 (NC3): : 3593 - 3603
[9] O'Connor D. J., 1958, T AM SOC CIV ENG, V123, P641, DOI DOI 10.1061/TACEAT.0007609
[10] RADON EVASION RATES IN THE ATLANTIC AND PACIFIC OCEANS AS DETERMINED DURING THE GEOSECS PROGRAM
PENG, TH
BROECKER, WS
MATHIEU, GG
LI, YH
[J]. JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS, 1979, 84 (NC5) : 2471 - 2486

← 1 2 →