Results 31 to 40 of about 67,700 (324)

Sunspot Seismology [PDF]

open access: yesSymposium - International Astronomical Union, 1988
The 5 minute oscillations in a sunspot umbra are the response of the sunspot to forcing by the 5 minute p-modes in the surrounding convection zone (Thomas 1981). This interaction of solar p-modes with a sunspot can be used to probe the structure of a sunspot beneath the visible surface of the Sun (Thomas, Cram, and Nye 1982). Here we report briefly the
John H. Thomas   +2 more
openaire   +1 more source

Recent gravity changes in China Mainland

open access: yesGeodesy and Geodynamics, 2011
Based on results of the mobile gravity measurements of the Crustal Movement Observation Network of China and Digital Earthquake Observation Network of China, this paper shows the pattern of temporal gravity changes in China mainland on a time scale of 2 –
Li Hui   +5 more
doaj   +1 more source

The impact of secondary mineral formation on Na-K-geothermometer readings: a case study for the Valley of Geysers hydrothermal system (Kronotsky State Nature Biosphere Reserve, Kamchatka)

open access: yesЗаписки Горного института, 2023
The temperature in the Valley of Geysers (Kamchatka) geothermal reservoir calculated using the feldspar Na-K-geothermometer has been steadily increasing over the past 10 years on average from 165 to 235 °C, which is close to the temperature values of a ...
Anastasia V. Sergeeva   +6 more
doaj  

Deep compressed seismic learning for fast location and moment tensor inferences with natural and induced seismicity

open access: yesScientific Reports, 2022
Fast detection and characterization of seismic sources is crucial for decision-making and warning systems that monitor natural and induced seismicity.
Ismael Vera Rodriguez, Erik B. Myklebust
doaj   +1 more source

Seismographs at Eskdalemuir Observatory, 1908–1925: tools for rethinking the origins of international cooperation in seismology

open access: yesScience Museum Group Journal, 2021
The British seismologist John Milne (1850–1913) is a dominant and celebrated figure in historical accounts of seismology. In this paper I use evidence from seismographs preserved in the collections of the Science Museum Group to reconsider his ...
Alexandra Rose
doaj   +1 more source

Temporal gravity changes before the 2008 Yutian Ms7.3 earthquake

open access: yesGeodesy and Geodynamics, 2012
Based on the data of the repeated gravity observation network in Chinese mainland since 1998, we analyzed the temporal changes of regional gravity field before the 2008 Yutian Ms7. 3 earthquake.
Shen Chongyang   +6 more
doaj   +1 more source

Seismology of Procyon A: determination of mode frequencies, amplitudes, lifetimes, and granulation noise [PDF]

open access: yes, 2006
The F5 IV-V star Procyon A (aCMi) was observed in January 2001 by means of the high resolution spectrograph SARG operating with the TNG 3.5m Italian telescope (Telescopio Nazionale Galileo) at Canary Islands, exploiting the iodine cell technique.
Bonanno, A.   +5 more
core   +2 more sources

Klyuchevskoy Volcano: new flank eruption named after G.S. Gorshkov, 2021 (Kamchatka)

open access: yesВестник Камчатской региональной ассоциации "Учебно-научный центр". Серия: Науки о Земле, 2021
On February 18, 2021, a flank eruption started on the north-western slope of the Klyuchevskoy Volcano (Kamchatka, Russia). Cinder cone was formed at the altitude of 2 850 m above sea level, from which a lava flow was spreading north-west.
Озеров А.Ю.   +6 more
doaj   +1 more source

Giant star seismology

open access: yes, 2017
The internal properties of stars in the red-giant phase undergo significant changes on relatively short timescales. Long near-uninterrupted high-precision photometric timeseries observations from dedicated space missions such as CoRoT and Kepler have ...
Christensen-Dalsgaard, J., Hekker, S.
core   +1 more source

Bayesian Coronal Seismology

open access: yes, 2017
In contrast to the situation in a laboratory, the study of the solar atmosphere has to be pursued without direct access to the physical conditions of interest. Information is therefore incomplete and uncertain and inference methods need to be employed to
Arregui, I.
core   +1 more source

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