Heat flow variations along the Middle America Trench

Prol‐Ledesma, Rosa María; Sugrobov, V. M.; Flores, Enrique; M., G. Ju�rez; Smirnov, Ya. B.; Gorshkov, A. P.; Bondarenko, V. M.; Рашидов, В. А.; Nedopekin, L. N.; Gavrilov, V. A.

doi:10.1007/bf00286248

Cited by 21 publications

(15 citation statements)

References 23 publications

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“…This younger age is also confirmed by observational measures of heat flow, which in La Rivera Plate is higher than that in the Cocos Plate; in particular, it is found that in La Rivera Plate it measures on average 160 mW/m 2 , while in the Cocos Plate it is from about 20 to 70 mW/m 2 [18]. The found results highlight that there is consistency between the multifractal characteristics of the earthquake magnitude sequences and tectonic features of the five regions.…”

Section: Discussionsupporting

confidence: 73%

Multifractal detrended fluctuation analysis of earthquake magnitude series of Mexican South Pacific Region

Márquez

Ramírez-Rojas

Telesca

2015

Applied Mathematics and Computation

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Section: Discussionsupporting

confidence: 73%

Multifractal detrended fluctuation analysis of earthquake magnitude series of Mexican South Pacific Region

Márquez

Ramírez-Rojas

Telesca

2015

Applied Mathematics and Computation

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“…These faults, arriving up to the seafloor, might indicate recent tectonic activity related to the dip augmentation of the Rivera Plate since 8.5 Ma, when bending occurred at the time the Rivera Plate slowed the convergence (7.2-4.8 Ma) as recorded by the trenchward migration of the volcanic front (FERRARI et al, 2001). Fluids are likely to percolate and circulate along these faults deep into the overriding plate, probably favouring the formation of gas hydrates and significantly cooling the oceanic plate as shown by marine heat flow observations (ZIAGOS et al, 1985;PROL-LEDESMA et al, 1989;KHUTORSKOY et al, 1994). The increase of the amount of fluids (including asthenospheric rising) started in the Pliocene and released from the subducting slab of the Rivera Plate due to the increase of the convergence is confirmed by the subsequent volcanic rate increment (FERRARI et al, 2001).…”

Section: Shallow Crustal Structurementioning

confidence: 99%

Imaging the Seismic Crustal Structure of the Western Mexican Margin between 19°N and 21°N

Bartolomé

Dañobeitia²,

Michaud³

et al. 2010

Pure Appl. Geophys.

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“…Locations of megathrust main shocks (open diamonds) and their aftershocks (small circles) were given by Pacheco et al [1997] for Jalisco], Stolte et al [1986] for Michoacan, and Singh et al [2000] for Oaxaca. Bathymetry data were used to constrain the plate surface seaward of the trench [ Prol‐Ledesma et al , 1989; Pardo and Suarez , 1995].…”

Section: Thermal Modeling Of the Mexico Subduction Zonementioning

confidence: 99%

“…The Guerrero profile uses the Guerrero B geometry. Heat flow measurements are from Ziagos et al [1985] (circles) and Prol‐Ledesma et al [1989] (squares).…”

Section: Thermal Modeling Of the Mexico Subduction Zonementioning

confidence: 99%

Thermal models of the Mexico subduction zone: Implications for the megathrust seismogenic zone

et al. 2002

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[1] It has been proposed that the seismogenic zone of subduction thrust faults is primarily controlled by temperature or rock composition changes. We have developed numerical models of the thermal structure of the Mexico subduction zone to examine the factors that affect the temperature of the subduction thrust fault. Although the oceanic plates subducting beneath Mexico are young, the top of the oceanic plate at the trench is cool, because of the lack of a thick cover of insulating sediments. Marine heat flow observations suggest that hydrothermal circulation may further cool the oceanic plate. This results in a cool subduction thrust fault, where the brittle part of the fault extends to depths of over 40 km. At these depths, even slight frictional heating may have significant effects on temperature along the thrust fault, particularly for regions with a high convergence rate and shallow plate dip. With the addition of a small amount of frictional heating, the temperatures of the deep (30-40 km) thrust fault are increased by over 200°C. As the observed downdip limit of rupture in recent well-constrained megathrust earthquakes is confined to depths above the intersection of the thrust fault and the continental Moho, a temperature of 350°C may control the downdip extent of the seismogenic zone. Thus, in order to be consistent with the observed shallow rupture areas, it is necessary to include a small amount of frictional heating, corresponding to an average shear stress of 15 MPa.INDEX TERMS: 3015 Marine Geology and Geophysics: Heat flow (benthic) and hydrothermal processes; 3040 Marine Geology and Geophysics: Plate tectonics (8150, 8155, 8157, 8158); 7230 Seismology: Seismicity and seismotectonics; 8130 Tectonophysics: Evolution of the Earth: Heat generation and transport; KEYWORDS: thermal models, subduction zone, megathrust earthquakes, seismogenic zone, heat flow, Mexico subduction zone Citation: Currie, C. A., R. D. Hyndman, K. Wang, and V. Kostoglodov, Thermal models of the Mexico subduction zone: Implications for the megathrust seismogenic zone,

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Heat flow variations along the Middle America Trench

Cited by 21 publications

References 23 publications

Multifractal detrended fluctuation analysis of earthquake magnitude series of Mexican South Pacific Region

Multifractal detrended fluctuation analysis of earthquake magnitude series of Mexican South Pacific Region

Imaging the Seismic Crustal Structure of the Western Mexican Margin between 19°N and 21°N

Thermal models of the Mexico subduction zone: Implications for the megathrust seismogenic zone

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