The Generation and Distribution of Global Heat Flow

Ye, Zheng-Ren; Hager, Bradford H.

doi:10.1002/cjg2.129

Cited by 5 publications

(3 citation statements)

References 23 publications

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“…In this study we did not examine its effect on the heat transfer. However, it is expected its impact on the surface heat flow will be small since the contribution from density anomaly‐driving flow is only a small fraction compared to that due to plate‐driven flow (Ye & Hager 2001).…”

Section: Conclusion and Discussionmentioning

confidence: 99%

Global heat flow simulation based on a kinematic model of mantle flow

Wang

2002

Geophysical Journal International

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Summary The global heat flow is the surface representation of thermal processes within the earth's mantle. The long‐wavelength pattern of observed heat flow closely resembles the plate tectonics and its most prominent feature is higher values along ocean ridge systems. Theoretically, to determine the thermal state of the Earth's mantle, the heat transfer problem and the mantle convection problem have to be solved simultaneously since they are coupled with each other. However, the development of global seismic tomography provides us with a possibility that, at least under certain assumptions, these problems can be decoupled from each other and solved separately. This allows us to calculate mantle flow velocities first based on the internal loading theory and then use the velocity field as the input to solve the thermal problem. In addition to the internal density anomalies, surface plate movements also excite mantle circulations and, under certain circumstance, they may dominate the structure of the mantle flow. In this study, using a kinematic model of mantle convection and heat transfer, we investigated the underlying processes that generated the observed global heat flow. Buoyancy from the density anomalies and the coupling from the overlying plates are treated as the mantle flow driving force. Both advection and conduction heat transfers are included in the energy equation. Results show that calculated depth derivatives of the near surface temperature are closely correlated to the observed surface heat flow pattern. Higher heat flow values around mid‐ocean ridge systems can be reproduced very well. The predicted average temperature as a function of depth reveals that there are two thermal boundary layers, one is close to the surface and another is close to the core–mantle boundary. The rest of the mantle is nearly isothermal. Although, in most of the mantle, advection dominates the heat transfer, the conductive heat transfer is still locally important in the boundary layers and plays an important role for the surface heat flow pattern. The existence of surface plates is responsible for the long wavelength surface heat flow pattern.

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Section: Conclusion and Discussionmentioning

confidence: 99%

Global heat flow simulation based on a kinematic model of mantle flow

Wang

2002

Geophysical Journal International

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“…When describing the energy equations, Hager treated the term of density difference as the source of mantle flow without taking temperature into consideration, which was simple and practical (Hager, 1984;Ye, 1993;Shi, 2001;Ye and Hager, 2001 (Forte andPeltier, 1987, 1991;Forte and Dziewonski, 1993;Forte, 2000;Forte and Mitrovica, 2001). Also, many Chinese researchers have done much on the research of mantle convection (Fu and Huang, 1993;Ye, 1993;Fu et al, 2001Fu et al, , 2003Shi, 2001;Ye and Hager, 2001). Forte (2000) pointed out that the basic presumption of the study for mantle convection based on tomography was that seismic velocity anomalies provided an instantaneous image of the lateral variations in temperature.…”

Section: Introductionmentioning

confidence: 99%

Vertical velocity of mantle flow of East Asia and adjacent areas

Cheng

Zhu

Cai

2007

Front. Earth Sci. China

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“…Terrestrial heat flow value is a comprehensive parameter, which is related with many factors such as the geothermal gradient, lithology, thermal conductivity of rocks and thickness. So it can be used to characterize a geothermal field of a region more accurately than other geothermal parameters (Ye and Hager, 2001;Gong et al, 2003).…”

Section: Introductionmentioning

confidence: 99%

The Distribution of Terrestrial Heat Flow and its Structural Control in the Huainan‐Huaibei Coalfield

Peng

Ren

et al. 2015

Chinese J of Geophysics

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On the basis of the results of the thermal conductivity of 127 rock samples in the tested coal measure strata and combining 59 reliable system temperature measurement data in mine field, we calculated out the heat flow values in Huainan-Huaibei coalfield and drew the distribution map of terrestrial heat flow. The results show that the heat flow values in Huainan-Huaibei coalfield range from 29.7 to 83.9 mW·m −2 and the average is 58.3 mW·m −2 . There is a certain difference compared to other energy basins and the heat flow value in Huainan coalfield which is 63.7 mW·m −2 is much higher than that in Huaibei coalfield which is 55.2 mW·m −2 . Through comprehensive analysis, we come to the conclusion that the difference between the terrestrial heat flow in study area and the one in other basins, and the phenomenon that the heat flow value in Huainan coalfield is higher than the one in Huaibei coalfield are controlled by tectonic evolution and regional geological background. And the reasons of heat flow maldistribution in study area is mainly influence of the geological structure on the geothermal field. Especially, the influence of nappe tectonic on the difference of current heat flow values on upper and lower side is very obvious.

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The Generation and Distribution of Global Heat Flow

Cited by 5 publications

References 23 publications

Global heat flow simulation based on a kinematic model of mantle flow

Global heat flow simulation based on a kinematic model of mantle flow

Vertical velocity of mantle flow of East Asia and adjacent areas

The Distribution of Terrestrial Heat Flow and its Structural Control in the Huainan‐Huaibei Coalfield

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