Refinement of parameters gravitational anomaly relative to the focal zone of the 2011 earthquake (Japan) based on satellite data

The aim of this work is to study gravitational anomalies that have arisen in the region of the sources of strong underwater earthquakes with a magnitude of Mw > 8. For this purpose, data obtained by the GRACE space system were used. Variations of the EWH program with a period of 30 days were investigated relative to the focal area of the 2011 Japanese earthquake for the period 2010-2012. It was found that during the preparation of an earthquake, the EWH values significantly increase in this area for three months, with aftershock activity, the EWH values decrease within a month. Maps of variations of the EWH parameter in the conditions of a disturbed geomedia and in background seismic conditions are constructed. The indices of the anomaly δEWH were calculated, which made it possible to analyze in more detail the local gravitational field for the investigated focal zone.

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Crustal density and global gravitational field estimation of the Moon from GRAIL and LOLA satellite data

Planetary and Space Science ◽

10.1016/j.pss.2020.105032 ◽

2020 ◽

Vol 192 ◽

pp. 105032

Author(s):

M. Šprlák ◽

S.-C. Han ◽

W.E. Featherstone

Keyword(s):

Gravitational Field ◽

Satellite Data ◽

The Moon ◽

Field Estimation ◽

Crustal Density

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A model for the source of the baryonic Tully–Fisher relationship and the Pioneer anomaly

Canadian Journal of Physics ◽

10.1139/p11-063 ◽

2011 ◽

Vol 89 (8) ◽

pp. 841-847 ◽

Cited By ~ 4

Author(s):

A. Raymond Penner

Keyword(s):

Gravitational Field ◽

Solar System ◽

Uncertainty Principle ◽

Pioneer Anomaly ◽

Heisenberg's Uncertainty Principle ◽

Gravitational Anomalies

It is shown that basic hypotheses regarding the nature of the source of the observed gravitational anomalies lead naturally to both the baryonic Tully–Fisher relationship and the Pioneer anomaly. A theory where the gravitational field of a mass induces a gravitational field contribution from the cosmos fits well with these hypotheses. In line with this, a theory is presented where particle–antiparticle pairs exist throughout the cosmos, with a lifetime in accordance with Heisenberg’s uncertainty principle. These particle–antiparticle pairs are displaced in the presence of a gravitational field and contribute to the overall gravitational field of a given mass. The modeled contribution agrees with the baryonic Tully–Fisher relationship, the Pioneer anomaly, and the absence of any anomalous gravitational field within the inner solar system.

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Gravity acceleration changes in Russian stations of comparing absolute gravimeters

Geodesy and Cartography ◽

10.22389/0016-7126-2021-977-11-8-15 ◽

2021 ◽

Vol 977 (11) ◽

pp. 8-15

Author(s):

V.D. Yushkin ◽

L.V. Zotov ◽

A.V. Basmanov ◽

R.A. Sermyagin

Keyword(s):

Gravitational Field ◽

Satellite Data ◽

Gravity Changes ◽

Grace Data ◽

Urgent Task ◽

The Absolute ◽

Gravity Network ◽

Gravity Acceleration

The article deals with the study of changes in the values of gravitational accelerations at the Russian comparison’s sites of the absolute gravimeters “Pulkovo”, “Svetloye” and “Zvenigorod” for the years of 2007–2013. A significant increase of the values instead of the expected decrease was obtained. The authors make an attempt to reveal the reasons for that basing on the calculation of the change in the gravitational field using the Bouguer and Faye corrections. The estimates do not fully explain the phenomenon, according neither to gravimeters nor to satellite data. At the sites of “Pulkovo” and “Svetloye”, the measured changes in the values differ from the calculated ones by +5,7 and 6,6 μGal, which significantly exceeds the errors of the absolute gravimeters. The change of the gravity varies from satellites GRACE data by 9,4 μGal at the “Zvenigorod” site. This may be due to local hydrological reasons. Determining the causes of gravity changes at the absolute stations of gravity network is an urgent task.

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Analysis of GRACE satellite measurements over seismically active areas of the strongest earthquakes

E3S Web of Conferences ◽

10.1051/e3sconf/20197502007 ◽

2019 ◽

Vol 75 ◽

pp. 02007

Author(s):

Konstantin V. Simonov ◽

Valentin B. Kashkin ◽

Тatyana V. Rubleva ◽

Konstantin V. Krasnoshekov

Keyword(s):

Spatial Distribution ◽

Satellite Data ◽

Data Archive ◽

Space System ◽

Satellite Measurements ◽

Digital Maps ◽

Grace Satellite ◽

Equivalent Water Height ◽

Water Height

The study is devoted to the analysis of the features of the change in the parameter EWH (Equivalent Water Height) over the geoid from the satellite measurements of the GRACE space system in seismically active areas of the strongest underwater earthquakes. The GRACE satellite data archive was created. An interpretation of the disturbed state of the geomedium using digital maps of the spatial distribution of the parameter EWH is performed.

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A one-dimensional self-gravitating stellar gas

Symposium - International Astronomical Union ◽

10.1017/s0074180900105261 ◽

1966 ◽

Vol 25 ◽

pp. 46-48 ◽

Cited By ~ 2

Author(s):

M. Lecar

Keyword(s):

Gravitational Field ◽

Phase Space ◽

Motion Picture ◽

Space Distribution ◽

Two Dimensional ◽

One Dimensional ◽

Phase Space Distribution ◽

Dimensional Phase Space ◽

The Mean

“Dynamical mixing”, i.e. relaxation of a stellar phase space distribution through interaction with the mean gravitational field, is numerically investigated for a one-dimensional self-gravitating stellar gas. Qualitative results are presented in the form of a motion picture of the flow of phase points (representing homogeneous slabs of stars) in two-dimensional phase space.

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