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Author: V. Cermak Publisher: Springer Science & Business Media ISBN: 3642953573 Category : Science Languages : en Pages : 337
Book Description
The outflow of heat from the earth's interior, the terrestrial heat flow, and the temperature field at depth are determined by deep-seated tectonic processes. The knowledge of the re gional heat flow pattern is thus very important in geophysics and provides a useful tool for studying crustal and litho spheric structure and understanding the nature of their evo lution. In order to use the results of heat flow measurements for regional studies and/or to correlate the observed surface geothermal activity with other geophysical or geological fea tures, a map showing the surface distribution of heat flow is necessary. Since 1963, when the first comprehensive listing of all available heat flow data appeared (Lee, 1963), several at tempts have been made to up-date the list, to classify all the data and to interpret them with respect to tectonics, deep structure and to use them for constructing surface heat flow maps. The first listing was subsequently revised by Lee and Uyeda (1965); numerous new data which were published there after were included in successive catalogs compiled by Simmons and Horai (1968) and then again by Jessop et al. (1976). The map showing the surface heat flow pattern may also be of great value for practical purposes, in view of the recent world-wide search for applicable sources of geothermal energy.
Author: Vladimir Cermak Publisher: Springer Science & Business Media ISBN: 3642755828 Category : Science Languages : en Pages : 749
Book Description
Terrestrial Heat Flow and the Lithosphere Structure summarizes current problems of analyzing related data. The individual chapters are written by leading scientists in geothermics, and are arranged in three sections: - General Lithospheric Geothermics - Regional Lithospheric Geothermics - Worldwide Heat Flow Density Studies. Emphasis is laid on the interrelations between lithospheric structure and local heat flow fields.
Author: R. Haenel Publisher: Springer Science & Business Media ISBN: 9400928475 Category : Science Languages : en Pages : 491
Book Description
There comes a time in the affairs of every organization when we have to sit down and take stock of where we are and where we want to go. When the International Heat Flow Committee (as it was first called), IHFC, was formed in 1963 at the San Francisco International Union of Geodesy and Geophysics with Francis Birch as its first Chairman, the principal purpose was to stimulate work in the basic aspects of geothermics, particularly the measurement of terrestrial heat-flow density (HFD) in what were then the 'geothermally underdeveloped' areas of the world. In this, the IHFC was remarkably successful. By the beginning of the second decade of our existence, interest in the economic aspects of geothermics was increasing at a rapid pace and the IHFC served as a conduit for all aspects of geothermics and, moreover, became the group responsi ble for collecting data on all types of HFD measurements. In all the tasks that are undertaken, the IHFC relies on the enthusiasm of its members and colleagues who devote much of their time to the important but unglamorous and personally unrewarding tasks that were asked of them, and we arc fortunate that our parent institutions are usually quite tolerant of the time spent by their employees on IHFC work.
Author: D.E. James Publisher: Springer Science & Business Media ISBN: 0442243669 Category : Science Languages : en Pages : 1299
Book Description
Consisting of more than 150 articles written by leading experts, this authoritative reference encompasses the entire field of solid-earth geophysics. It describes in detail the state of current knowledge, including advanced instrumentation and techniques, and focuses on important areas of exploration geophysics. It also offers clear and complete coverage of seismology, geodesy, gravimetry, magnetotellurics and related areas in the adjacent disciplines of physics, geology, oceanography and space science.
Author: Louise Bodri Publisher: Elsevier ISBN: 0080545955 Category : Science Languages : en Pages : 349
Book Description
Climate for the 21st century is expected to be considerably different from the present and recent past. Industrialization growth combined with the increasing CO2 concentration in the atmosphere and massive deforestation are well above the values over the past several decades and are expected to further grow. Air temperature is rising rapidly well as does the weather variability producing frequent extreme events. Six of the ten warmest years occurred in the 1990s. Temperatures predicted for the 21st century ranges well above the present day value. The time period of the last 100-200 years covered by the direct meteorological observations is too short and does not provide material to reliably assess what may happen over the next hundred(s) years. A faithful prediction of the future requires understanding how climate system works, i.e. to reconstruct past climate much further in the past. Borehole paleoclimatology enables climate reconstruction of the past several millennia, unlike proxy methods provides direct past temperature assessment and can well broaden the areal range to the remote regions poorly covered with meteorological observations. Considerable debates have recently focused on the causes of the present-day warming, i.e. to distinguish between the natural and anthropogenic contribution to the observed temperature increase, eventually to quantify their regional distribution. Complex interpretation of borehole data with the proxies and additional socio-economic information can hopefully help. On observed data taken in various places all over the world we demonstrate suitable examples of the interaction between the subsurface temperature response to time changes in vegetation cover, land-use (farming) and urbanization. Precise temperature-time monitoring in shallow subsurface can further provide the magnitude of the present-day warming within relatively short time intervals. As far as we know, there exists so far no book dealing entirely with the subject of the Borehole climatology. Only relatively rarely this method is mentioned in otherwise plentiful literature on climate reconstruction or on climate modelling. There are, however, series of papers focussing on various borehole--climate related studies in numerous journals (e.g. Global and Planetary Change, Climate Change, Tectonophysics, Journal of Geophysical Research, Geophysical Research Letters, etc). Time to time a special issue appears to summarize papers on this topic presented during specialized symposia. Key Features - Description of a new useful alternative paleoclimate reconstruction method - A suitable source of information for those wishing to learn more about climate change - Material for lecturing and use in the classroom - Ample practical examples of borehole temperature inversions worldwide - Ample illustrations and reference list - Authors have a good knowledge of the problem based on more than 20 years of experience, one of them actually pioneered the method Description of a new useful alternative paleoclimate reconstruction method A suitable source of information for those wishing to learn more about climate change Material for lecturing and use in the classroom Ample practical examples of borehole temperature inversions worldwide Ample illustrations and reference list Authors have a good knowledge of the problem based on more than 20 years of experience, one of them actually pioneered the method
Author: Anson M. Antriasian Publisher: ISBN: Category : Ocean bottom temperature Languages : en Pages : 57
Book Description
Measuring surface heat flow at the Hikurangi Trough is key toward characterizing the local thermal regime and the influence of thermally sensitive processes such as fluid flow and slow slip. Marine heat flow data were collected during May– June 2015 in the northern Hikurangi Trough at sites seaward and landward of the deformation front, giving mean and one standard deviation values of 58 ± 16 and 46 ± 15 mW m−2 respectively. A 3.5 m violin-bow style probe was used to measure thermal conductivity and temperature gradient of the seafloor, and heat flow is calculated using Fourier’s law. Two-dimensional steady-state, finite element modeling was undertaken to analyze the influence of subduction parameters on surface heat flow and temperature along the subduction thrust. Heat flow values seaward of the deformation front have been found to be sensitive to the structure of buried and outcropping extrusive crust, but the mean heat flow is within the range of expected values for lithosphere this age (120 Myr) according to the GDH1 cooling model. Landward of the deformation front, measured heat flow is in excess of preferred modeled values. I interpret these observations as evidence for fluid flow within a crustal aquifer system and through splay faults within the forearc. A heat flow discontinuity of 40 mW m−2 landward of the deformation front supports the presence of compaction sourced fluid along the subduction thrust, which is consistent with previous evidence for excess pore pressure and the occurrence of shallow slow slip.
Author: Claude Jaupart Publisher: Cambridge University Press ISBN: 1139493620 Category : Science Languages : en Pages : 477
Book Description
Heat provides the energy that drives almost all geological phenomena and sets the temperature at which these phenomena operate. This book explains the key physical principles of heat transport with simple physical arguments and scaling laws that allow quantitative evaluation of heat flux and cooling conditions in a variety of geological settings and systems. The thermal structure and evolution of magma reservoirs, the crust, the lithosphere and the mantle of the Earth are reviewed within the context of plate tectonics and mantle convection - illustrating how theoretical arguments can be combined with field and laboratory data to arrive at accurate interpretations of geological observations. Appendices contain data on the thermal properties of rocks, surface heat flux measurements and rates of radiogenic heat production. This book can be used for advanced courses in geophysics, geodynamics and magmatic processes, and is a reference for researchers in geoscience, environmental science, physics, engineering and fluid dynamics.
Author: Chongbin Zhao Publisher: Springer Science & Business Media ISBN: 3540795111 Category : Science Languages : en Pages : 234
Book Description
This monograph provides state-of-the-art theoretical results in a systematic treatment of convective and advective heat transfer during fluid flow in geological systems at the crustal scale.