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The separation of the geomagnetic field originated in the core, in the asthenosphere, and in the crust
dynamo spatial spectrum white spectrum Lowes’ law Nevanlinna’ s law Hamilton’ s principle geomagnetic anomalies inner core outer core asthenosphere
2015/10/8
The separation of the field produced by different internal sources can be accomplished by means of the so-called spatial spectrum of the geomagnetic field of internal origin. It is shown how such a ra...
Location of a new ice core site at Talos Dome (East Antarctica)
radio echo sounding radio glaciology ice thickness measurements internal layering
2015/9/8
In the frame of glaciology and palaeoclimate research, Talos Dome (72°48lS; 159°06lE), an ice dome on the East Antarctic plateau, represents the new selected site for a new deep ice core drilling. The...
A sapphire monolithic differential accelerometer as core sensor for gravity gradiometric geophysical instrumentation
gradiometric gravimeter accelerometer Whispering gallery cavity
2015/9/8
Gradiometric gravimetry is a survey technique widely used in geological structure investigation. This work demonstrates the feasibility of a new class of low frequency accelerometers for geodynamics s...
The evidence for the existence of significant rigidity in the Earth's inner core is summarised and discussed in the light of recent work. Quantum-mechanical calculations, based on a Thomas-Fermi-Dirac...
Old rocks hold on to their secrets. Now, a geophysicist at Michigan Technological University has unlocked clues trapped in the magnetic signatures of mineral grains in those rocks.. These clues will h...
Earth's surprise inside: Geologists unlock mysteries of the planet's inner core
Earth's surprise inside Geologists unlock mysteries planet's inner core
2015/3/4
Seismic waves are helping scientists to plumb the world’s deepest mystery: the planet’s inner core.Thanks to a novel application of earthquake-reading technology, a research team at the University of ...
Tomography of core-mantle boundary and lowermost mantle coupled by geodynamics: joint models of shear and compressional velocity
Composition and state Geological and geophysical evidences of deep processes
2015/8/18
We conduct joint tomographic inversions of P and S travel time observations to obtain models of delta v_P and delta v_S in the entire mantle. We adopt a recently published method which takes into acc...
Late Pleistocene variation in lignin and fatty acids from core TKN-2004 in a small mountain basin in central Japan
lignin vegetation TMAH thermochemolysis glacial Takano Basin central Japan Late Pleistocene
2017/4/11
We generated a record of lignin and fatty acid compositions from the TK-2004 core in Takano Basin, central Japan,
during 39–162 ka by TMAH-thermochemolysis-GC/MS. We tested lignin and fatty acid comp...
Observation of Core PhaseScSfrom theMw9.0 Tohoku-Oki Earthquake with High-Rate GPS
Core PhaseS Me9.0 Tohoku-Oki Earthquake High-Rate GPS
2014/4/9
High-rate Global Positioning Systems (GPS) observations can record ground motions from moderate to strong earthquakes at distances of a few kilometers up to thousands of kilometers(Larsonet al., 2003;...
Rolling hills on the core–mantle boundary
core–mantle boundary (CMB) iron-rich (Mg,Fe)O USArray low velocity zone
2014/4/10
Recent results suggest that an iron-rich oxide may have fractionally crystallized from a primordial magma ocean and settled on the core–mantle boundary (CMB). Based on experimental results, the presen...
Zonal flows are ubiquitous in nature. Familiar examples include the jet stream winds that circulate the globe or the alternating currents in the world's oceans such as the Gulf Stream. Now, researcher...
Finite amplitudes helical waves on the surface of the conducting fluid earth core as an example of the self-exciting homopolar heterogeneous dynamo
Finite amplitudes helical waves conducting fluid earth self-exciting homopolar heterogeneous dynamo
2009/11/9
Helical waves of the finite amplitude on a surface of the fluid conducting Earth core are examined for generation of the magnetic field. Estimates are made for the differentially rotating cylindrical ...
On effect of precession-induced flows in the liquid core for early Earth's history
precession-induced flows liquid core early Earth's history
2009/11/9
Secondary and tertiary flow patterns seen in experiments simulating flow in the Earth's liquid core induced by luni-solar precession of the solid mantle (Vanyo et al., 1995) hint at the development of...
Characteristics of chlorites in seismogenic fault zones: the Taiwan Chelungpu Fault Drilling Project (TCDP) core sample
Characteristics of chlorites seismogenic fault zones Taiwan Chelungpu Fault Drilling Project core sample
2010/9/28
The iron content and the asymmetry of iron and magnesium ions in chlorites are examined for the Chelungpu Fault in Taiwan, which is a seismogenic fault. The samples are collected from the cores drille...
A multi-layered kinematic dynamo model: implications of a stratified upper layer in the Earths core
2007/7/28
专著信息
书名
A multi-layered kinematic dynamo model: implications of a stratified upper layer in the Earth's core
语种
英文
撰写或编译
作者
Liao X.,Zhang K.,D. Gubbins
第一作者单位
出版社
Geophys. Astrophys. Fluid Dyn., 2005,...