Temporal changes in the hydrography and chemistry of the Cariaco Trench

Deep-Sea Research, Vol. 34, No. 9, p. 1653, 1987. Pergamon Journals Ltd. Printed in Great Britain.

ERRATUM T e m p o r a l changes in the h y d r o g r a p h y a n d chemistry of the Cariaco T r e n c h by M. I. SCRANTON, F . L . SAYLES, M. P. BACON a n d P. G. BREWER. Deep-Sea Research, Vol. 34, Nos 5/6, pp. 945 - 963, 1987. Values o f box volumes used in SCRANTON et al. (1987) which appear in T a b l e 3 o f that paper are in error. Correct v o l u m e s appear below. Use o f the correct v o l u m e s requires that the eddy d i f f u s i o n coefficient also be lowered to o b t a i n a good fit for t e m p e r a t u r e a n d salinity profiles. [K values in SCRANTON et al. (1987) should be multiplied by 0.8.] New values for K are also included below. Using the corrected values for V a n d K, model fits for silica a n d h y d r o g e n sulfide are essentially identical to those in the original paper a n d require the same values for s e d i m e n t - w a t e r flux a n d in situ p r o d u c t i o n rate. Table 3. Values of parameters used in non-steady-state box model Depth (m)

Area (109m2)

Volume (10" m3)

K (cm 2s ~)

Flux H2S (lO6,amolcm 2s t)

Flux SiO2 (10 6/amolcm 2s ')

320 412 503 595 686 778 870 961 1052 1144 1236 1327

8.22 7.60 6.97 6.31 5.70 5.03 4.40 1.35 1.15 0.92 0.72 0.51

7.30 6.70 6.10 5.50 4.90 4.30 3.70 1.20 0.95 0.75 0.56 0.47

0.49 0.84 1.02 1.42 4.08 4.08 4.08 4.08 4.08 4.08 4.08 4.08

2.7 2.7 2.7 2.7 2.7 2.7 2.7 2.7 2.7 2.7 2.7 2.7

0.66 0.66 0.66 0.66 0.66 0.66 0.66 0.66 0.66 0.66 0.66 0.66

The silica flux indicated in this table is that which gives the best fit for the bottom waters if in situ production is ignored.

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