On Estimating the Dissipative Factor of the Martian Interior

被引:12
作者
Zharkov, V. N. [1 ]
Gudkova, T. V. [1 ]
Batov, A. V. [2 ]
机构
[1] Russian Acad Sci, Schmidt Inst Phys Earth, Moscow 123242, Russia
[2] Russian Acad Sci, Trapeznikov Inst Control Sci, Moscow 117997, Russia
关键词
dissipative factor; attenuation; seismic waves; free oscillations; interior structure; Mars; CORE-MANTLE BOUNDARY; CHANDLER-WOBBLE; OSCILLATION METHOD; GRAVITY-FIELD; MARS; MODEL; ATTENUATION; VELOCITY; ORBITS; CRUST;
D O I
10.1134/S0038094617060089
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
An attempt is made to construct a trial Q (mu)(l) distribution in the silicate mantle of Mars. With the allowance for the fact that on the P-T plane the Earth's geotherm is close to the distribution of areotherms, it was concluded that Q (mu)(l) should be distributed in the Martian interior topologically close to the Q (mu)(l) distribution in the Earth. The initial distribution was specified by the four-layer piecewise-constant distribution from the QML9 model. An important step was to select the power index in the frequency dependence of Q (mu). Based on the laboratory data and on the experience of studying this problem for the Earth, n was specified in the interval 0.1-0.3. It was found that with the conversion of the initial distribution to the orbital period of Phobos around Mars, which is the only constraint for the problem derived from the observations, this distribution agrees reasonably well with the observational data at n = 0.1.
引用
收藏
页码:479 / 490
页数:12
相关论文
共 54 条
[1]   FREQUENCY-DEPENDENCE OF Q IN THE EARTH AND IMPLICATIONS FOR MANTLE RHEOLOGY AND CHANDLER WOBBLE [J].
ANDERSON, DL ;
MINSTER, JB .
GEOPHYSICAL JOURNAL OF THE ROYAL ASTRONOMICAL SOCIETY, 1979, 58 (02) :431-440
[2]  
[Anonymous], 2015, Treatise on Geophysics, DOI DOI 10.1016/B978-0-444-53802-4.00167-6
[3]   Martian crust: a modeling approach [J].
Babeyko, AY ;
Zharkov, VN .
PHYSICS OF THE EARTH AND PLANETARY INTERIORS, 2000, 117 (1-4) :421-435
[4]   Density profile of an SNC model Martian interior and the moment-of-inertia factor of Mars [J].
Bertka, CM ;
Fei, YW .
EARTH AND PLANETARY SCIENCE LETTERS, 1998, 157 (1-2) :79-88
[5]   Mineralogy of the Martian interior up to core-mantle boundary pressures [J].
Bertka, CM ;
Fei, YW .
JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH, 1997, 102 (B3) :5251-5264
[6]   Global models of surface wave attenuation [J].
Dalton, Colleen A. ;
Ekstrom, Goran .
JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH, 2006, 111 (B5)
[7]   Global seismological shear velocity and attenuation: A comparison with experimental observations [J].
Dalton, Colleen A. ;
Ekstroem, Goeran ;
Dziewonski, Adam M. .
EARTH AND PLANETARY SCIENCE LETTERS, 2009, 284 (1-2) :65-75
[8]   The global attenuation structure of the upper mantle [J].
Dalton, Colleen A. ;
Ekstroem, Goeran ;
Dziewonski, Adam M. .
JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH, 2008, 113 (B9)
[9]   PRELIMINARY REFERENCE EARTH MODEL [J].
DZIEWONSKI, AM ;
ANDERSON, DL .
PHYSICS OF THE EARTH AND PLANETARY INTERIORS, 1981, 25 (04) :297-356
[10]   The seismological signature of temperature and grain size variations in the upper mantle [J].
Faul, UH ;
Jackson, I .
EARTH AND PLANETARY SCIENCE LETTERS, 2005, 234 (1-2) :119-134