Submarine hydrogeology of the Hawaiian archipelagic apron: 2. Numerical simulations of coupled heat transport and fluid flow

Harris, Robert N.; Garven, Grant; Georgen, J. E.; McNutt, Marcia; Christiansen, L. B.; Herzen, R. P. Von

doi:10.1029/2000jb900164

Cited by 22 publications

(14 citation statements)

References 41 publications

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“…Courtney and White (1986) found a weak anomaly over Cape Verde. No heat flux anomaly above the error level has been observed along the Hawaiian hot spot track, probably due to hydrothermal convection within the sedimentary moat surrounding the island (Harris et al, 2000;Von Herzen et al, 1989). A global analysis shows that swells are associated with above normal heat flux values (Stein, 1995).…”

Section: Hot Spotsmentioning

confidence: 92%

Heat Flow and Thermal Structure of the Lithosphere

Jaupart

Mareschal²

2015

Treatise on Geophysics

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Section: Hot Spotsmentioning

confidence: 92%

Heat Flow and Thermal Structure of the Lithosphere

Jaupart

Mareschal²

2015

Treatise on Geophysics

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“…Closely spaced heat-fl ow data may also help delineate wavelengths and constrain the geometry of circulation cells (e.g., Fisher and Becker, 1995;Harris and McNutt, 2007). However, reliable heat-fl ow measurements are too sparse within the southern Victoria Land Basin (see Figure 1 and Table 1) to provide the type of fi ne-scale resolution required to construct realistic submarine hydrogeological models (e.g., Harris et al, 2000b).…”

Section: Attendant Geophysical Logs and Hydrologic Propertiesmentioning

confidence: 99%

“…This basin was formed by loading of the crust from the basaltic volcanoes that constitute Ross Island within the tectonic framework of the Victoria Land Basin, a region of late Cenozoic crustal extension of the West Antarctic Rift System (e.g., Wilson, 1999;Hall et al, 2007;Henrys et al, 2007). Characterizing the marine hydrogeology at this site requires an understanding of fi ne-scale heat-fl ow patterns and structural details in order to evaluate moat-wide circulation processes, thermal refraction along the volcanic edifi ce, and channelized fl uid fl ow (Harris et al, 2000a(Harris et al, , 2000b.…”

Section: Introductionmentioning

confidence: 99%

Heat Flow and Hydrologic Characteristics at the AND-1B borehole, ANDRILL McMurdo Ice Shelf Project, Antarctica

et al. 2010

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TheAntarctic Drilling Program (ANDRILL) successfully drilled and cored a borehole, AND-1B, beneath the McMurdo Ice Shelf and into a fl exural moat basin that surrounds Ross Island. Total drilling depth reached 1285 m below seafl oor (mbsf) with 98 percent core recovery for the detailed study of glacier dynamics. With the goal of obtaining complementary information regarding heat fl ow and permeability, which is vital to understanding the nature of marine hydrogeologic systems, a succession of three temperature logs was recorded over a fi veday span to monitor the gradual thermal recovery toward equilibrium conditions. These data were extrapolated to true, undisturbed temperatures, and they defi ne a linear geothermal gradient of 76.7 K/km from the seafl oor to 647 mbsf. Bulk thermal conductivities of the sedimentary rocks were derived from empirical mixing models and density measurements performed on core, and an average value of 1.5 W/mK ± 10 percent was determined. The corresponding estimate of heat fl ow at this site is 115 mW/m 2 . This value is relatively high but is consistent with other elevated heat-fl ow data associated with the Erebus Volcanic Province. Information regarding the origin and frequency of pathways for subsurface fl uid fl ow is gleaned from drillers' records, complementary geophysical logs, and core descriptions. Only two prominent permeable zones are identifi ed and these correspond to two markedly different features within the rift basin; one is a distinct lithostratigraphic subunit consisting of a thin lava fl ow and the other is a heavily fractured interval within a single thick subunit.

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“…The resulting heat flow deficit is conceptualized with vectors drawn in Figure 1a. Numerical results of coupled heat and fluid flow simulations of this style are given in Harris et al [2000b].…”

Section: Buoyancy‐driven Fluid Flowmentioning

confidence: 99%

Heat flow on hot spot swells: Evidence for fluid flow

Harris

McNutt

2007

J. Geophys. Res.

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[1] We examine variability observed in heat flow determinations collected on hot spot swells. We find substantial scatter in heat flow at wavelengths of a few hundred kilometers and less at both Hawaii and Reunion, where closely spaced data exist, and large variability in the regional heat flow surveys at Cape Verde, Bermuda, and Crozet. Our preferred interpretation is that the observed variability is due to fluid flow. The presence of fluid flow admits the possibility that some heat is lost through advection such that the mean observed heat flow is less than the actual mantle flux. If so, the full magnitude of sublithospheric thermal variations may not be observed. This interpretation has important implications for understanding heat flow determinations made on hot spot swells and resulting geodynamic inferences. We suggest fluid flow may be masking variations in sublithospheric heat flux making available surface heat flow values a poor discriminator between geodynamic models for hot spot swells. Future field programs, methods of data analysis, and models should be designed to help extract a low-frequency mantle flux disguised by a high-noise surface filter.

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Submarine hydrogeology of the Hawaiian archipelagic apron: 2. Numerical simulations of coupled heat transport and fluid flow

Cited by 22 publications

References 41 publications

Heat Flow and Thermal Structure of the Lithosphere

Heat Flow and Thermal Structure of the Lithosphere

Heat Flow and Hydrologic Characteristics at the AND-1B borehole, ANDRILL McMurdo Ice Shelf Project, Antarctica

Heat flow on hot spot swells: Evidence for fluid flow

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