نتایج جستجو برای: 24 km an initial estimation of moho depth located at 34 km
تعداد نتایج: 21813937 فیلتر نتایج به سال:
Introduction: Studies of the compensation state and evolution of lunar impact basins using gravity and topography data have revealed much about the early thermal history of the Moon [e.g. 1, 2, 3]. While Mars has had a far more complex history, it is likely that the ancient martian impact basins also have much to tell us about the early thermal evolution of the planet. To address this, here we ...
Background and objective: The land subsidence is commonly associated with many risks. This phenomenon can cause substructure and natural damages, and ultimately leads to an increased risk in society and the economy. The most studies are focused on modeling and its techniques, except for two case studies in Tehran: the risk of subsidence phenomenon and the elements exposed to this risk which has...
The 1999 Chi-Chi earthquake (MW 7.6) (20 September 1999, 17:47:15.9 UTC) (located at 23.853 N, 120.816 E, and depth of 7.5 km) inflicted severe regional scale damage to Taiwan. The strong-motion wavefield was captured by a dense network of stations (with average station spacing of 5 km), which represents the most complete strong-motion dataset to date to use to study the kinematic source proces...
The conditions under which the Michaelis-Menten equation accurately captures the steady-state kinetics of a simple enzyme-catalyzed reaction is contrasted with the conditions under which the same equation can be used to estimate parameters, KM and V, from progress curve data. Validity of the underlying assumptions leading to the Michaelis-Menten equation are shown to be necessary, but not suffi...
We simultaneously invert the strong-motion velocity records and the longand intermediate-period teleseismic P waveforms of the 19 September 1985 Michoacan, Mexico, earthquake to recover the distribution of slip on the fault using a point-by-point constrained and stabilized, least-squares inversion method. A fault plane with strike fixed at 300 ° and dip fixed at 14 ° is placed in the region of ...
[1] We synthesize the tectonics of the southern Walker Lane belt and Coso Range in central eastern California using regional earthquake data. First, we invert for threedimensional models of the Vp and Vp /Vs structure of the upper and middle crust. Using these models, we also determine three-dimensional Vs and Poisson’s ratio models. The changes in seismic velocities across the region are small...
In this study, joint inversions of Synthetic Aperture Radar (SAR) and Global Position System (GPS) measurements are used to investigate the source parameters of four Mw > 5 events of the 2016–2017 Central Italy earthquake sequence. The results show that the four events are all associated with a normal fault striking northwest–southeast and dipping southwest. The observations, in all cases, are ...
Kuh e-Dom intrusion, located at the northeast of Ardestan, consists of granodiorite and diorite. The granodiorites have been intruded by various basic dikes. Plutonic rocks are mainly composed of plagioclase, biotite, amphibole, pyroxene, alkali-feldspar and quartz. Based on microprobe analysis, the biotite is classified as magnesiobiotites which typically occur at calc-alkaline orogenic igneou...
The study area is located about 110 Km south of Shahrood in north of Central Iran structural zone. There are many cumulate enclaves with ferroanpargasite gabbroic composition within the Middle Eocene basic volcanic rocks in the study area. Amphiboles are one of the most important minerals in gabbroic cumulates and host basaltic rocks. Based on results of electron microprobe analyses, amphibole ...
this survey aimed to evaluate the level of lead (pb) pollution in cattle in the vicinity of the shiraz oil and petrochemical industries using hair samples. dairy farms located within 10 km of the shiraz oil and petrochemical industries were identified and divided into four groups. farms that were located in the radial zones of 0.5-1.5 km, 1.5-5 km, 5-7 km, 7-10.5 km were considered as groups a,...
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