Abstract
Heat transfer processes at the mounds area of the Galapagos Spreading Center at 86oW are revealed by temperatures measured at approx 10m intervals in the 30+ or -10m sediment at each of 12 holes at DSDP Leg 70 Sites 506-509 and by temperatures of up to five thermistors on eleven 8-12m long piston cores. The 325 needle- probe values show a significant linear increase of thermal conductivity with depth in each core. About half of the temperature-thermal resistance profiles are nonlinear and are fit to a steady state, vertical pore water advection model. Results indicate high and variable total heat flow and localized hydrothermal discharge at approx 10-8m/s, associated with individual mounts. Recharge is indicated at similar rates in the low heat flow belt approx 5km S of the mounds and is suggested at slower rates in the intermediate heat flow (0.17-0.42 W/m2) belt surrounding the mounds heat flow high. Possible slow entrained recharge within approx 100m of discharging mounds is suggested.-Authors
| Original language | English (US) |
|---|---|
| Pages (from-to) | 995-1008 |
| Number of pages | 14 |
| Journal | Journal of Geophysical Research |
| Volume | 88 |
| Issue number | B2 |
| State | Published - 1983 |
| Externally published | Yes |
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ASJC Scopus subject areas
- Earth and Planetary Sciences(all)
- Environmental Science(all)
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Heat transfer through the sediments of the mounds hydrothermal area, Galapagos Spreading Center at 86oW. / Becker, Keir; Von Herzen, R. P.
In: Journal of Geophysical Research, Vol. 88, No. B2, 1983, p. 995-1008.Research output: Contribution to journal › Article
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TY - JOUR
T1 - Heat transfer through the sediments of the mounds hydrothermal area, Galapagos Spreading Center at 86oW.
AU - Becker, Keir
AU - Von Herzen, R. P.
PY - 1983
Y1 - 1983
N2 - Heat transfer processes at the mounds area of the Galapagos Spreading Center at 86oW are revealed by temperatures measured at approx 10m intervals in the 30+ or -10m sediment at each of 12 holes at DSDP Leg 70 Sites 506-509 and by temperatures of up to five thermistors on eleven 8-12m long piston cores. The 325 needle- probe values show a significant linear increase of thermal conductivity with depth in each core. About half of the temperature-thermal resistance profiles are nonlinear and are fit to a steady state, vertical pore water advection model. Results indicate high and variable total heat flow and localized hydrothermal discharge at approx 10-8m/s, associated with individual mounts. Recharge is indicated at similar rates in the low heat flow belt approx 5km S of the mounds and is suggested at slower rates in the intermediate heat flow (0.17-0.42 W/m2) belt surrounding the mounds heat flow high. Possible slow entrained recharge within approx 100m of discharging mounds is suggested.-Authors
AB - Heat transfer processes at the mounds area of the Galapagos Spreading Center at 86oW are revealed by temperatures measured at approx 10m intervals in the 30+ or -10m sediment at each of 12 holes at DSDP Leg 70 Sites 506-509 and by temperatures of up to five thermistors on eleven 8-12m long piston cores. The 325 needle- probe values show a significant linear increase of thermal conductivity with depth in each core. About half of the temperature-thermal resistance profiles are nonlinear and are fit to a steady state, vertical pore water advection model. Results indicate high and variable total heat flow and localized hydrothermal discharge at approx 10-8m/s, associated with individual mounts. Recharge is indicated at similar rates in the low heat flow belt approx 5km S of the mounds and is suggested at slower rates in the intermediate heat flow (0.17-0.42 W/m2) belt surrounding the mounds heat flow high. Possible slow entrained recharge within approx 100m of discharging mounds is suggested.-Authors
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M3 - Article
VL - 88
SP - 995
EP - 1008
JO - Journal of Geophysical Research: Oceans
JF - Journal of Geophysical Research: Oceans
SN - 2169-9275
IS - B2
ER -