Results 21 to 30 of about 41,615 (50)

Design and operation of a 1500-m laser strainmeter installed at an underground site in Kamioka, Japan

Earth, Planets and Space, 2017
A laser strainmeter with a 1500-m baseline was constructed at an underground site in Kamioka, Gifu Prefecture, Japan, and has been operating since August 2016. The laser interferometer measures the change in distance between two retroreflectors housed in
Akito Araya, Akiteru Takamori, Wataru Morii, Kouseki Miyo, Masatake Ohashi, Kazuhiro Hayama, Takashi Uchiyama, Shinji Miyoki, Yoshio Saito   +8 more
doaj   +1 more source

Comparison of global observations and trends of total precipitable water derived from microwave radiometers and COSMIC radio occultation from 2006 to 2013 [PDF]

Atmospheric Chemistry and Physics, 2018
We compare atmospheric total precipitable water (TPW) derived from the SSM/I (Special Sensor Microwave Imager) and SSMIS (Special Sensor Microwave Imager/Sounder) radiometers and WindSat to collocated TPW estimates derived from COSMIC (Constellation ...
S.-P. Ho, L. Peng, C. Mears, R. A. Anthes   +3 more
doaj   +1 more source

Ground strains induced by the 2022 Hunga-Tonga volcanic eruption, observed by a 1500-m laser strainmeter at Kamioka, Japan

Earth, Planets and Space, 2023
In this study, we detected the horizontal ground strains induced by the atmospheric Lamb wave emitted from the 2022 eruption of the Tonga–Hunga Ha’apai undersea volcano, at an underground observatory in Kamioka, Japan.
Akiteru Takamori, Akito Araya, Kouseki Miyo, Tatsuki Washimi, Takaaki Yokozawa, Hideaki Hayakawa, Masatake Ohashi   +6 more
doaj   +1 more source

Large-scale cosmic ray fluctuations inferred from the ground-based neutron and ionizing component observations and their relevance to cosmic ray anisotropy

Geofísica Internacional, 1988
Se estudia el comportamiento del espectro de potencia de las fluctuaciones en la intensidad de los rayos cósmicos para frecuencias menores de 10-4Hz, determinado a partir de las observaciones en superficie de las componentes nucleónica y de ionización ...
O. V. Gulinsky, L. I. Dorman, N. S. Kaminer, T. Lanina, I. Ya. Libin, N. V. Mymrina, R. E. Prilutsky, K. F. Yudakhin, L. G. Chuvilgin, K. Kudela, M. Steglik, J. A. Otaola, J. Pérez Peraza   +12 more
doaj   +1 more source

Comparison of COSMIC and COSMIC-2 Radio Occultation Refractivity and Bending Angle Uncertainties in August 2006 and 2021

Atmosphere, 2022
We compare the random error statistics (uncertainties) of COSMIC (Constellation Observing System for Meteorology, Ionosphere and Climate, C1) and COSMIC-2 (C2) radio occultation (RO) bending angles and refractivities for the months of August 2006 and ...
Richard Anthes, Jeremiah Sjoberg, Xuelei Feng, Stig Syndergaard   +3 more
doaj   +1 more source

Three-dimensional earthward fast flow in the near-Earth plasma sheet in a sheared field: comparisons between simulations and observations [PDF]

Annales Geophysicae, 2009
Three-dimensional configuration of earthward fast flow in the near-Earth plasma sheet is studied using three-dimensional magnetohydrodynamics (MHD) simulations on the basis of the spontaneous fast reconnection model.
K. Kondoh, M. Ugai
doaj   +1 more source

Discord in Concordance Cosmology and Anomalously Massive Early Galaxies

Universe
Cosmological parameters are constrained by a wide variety of observations. We examine the concordance diagram for modern measurements of the Hubble constant, the shape parameter from the large-scale structure, the cluster baryon fraction, and the age of ...
Stacy S. McGaugh
doaj   +1 more source

The STELLA Robotic Observatory on Tenerife

Advances in Astronomy, 2010
The Astrophysical Institute Potsdam (AIP) and the Instituto de Astrofísica de Canarias (IAC) inaugurated the robotic telescopes STELLA-I and STELLA-II (STELLar Activity) on Tenerife on May 18, 2006.
Klaus G. Strassmeier, Thomas Granzer, Michael Weber, Manfred Woche, Emil Popow, Arto Järvinen, Janos Bartus, Svend-Marian Bauer, Frank Dionies, Thomas Fechner, Wilbert Bittner, Jens Paschke   +11 more
doaj   +1 more source

Development of the Storm‐Induced Ionospheric Irregularities at Equatorial and Middle Latitudes During the 25–26 August 2018 Geomagnetic Storm

Space Weather, 2022
Can geomagnetic storms during low solar activity trigger formation of extreme equatorial plasma bubbles (EPBs) that affect low and midlatitudes? We analyzed the ionospheric response to the 25–26 August 2018 geomagnetic storm and revealed formation of ...
Iurii Cherniak, Irina Zakharenkova
doaj   +1 more source

An interacting molecular cloud scenario for production of gamma-rays and neutrinos from MAGIC J1835-069, and MAGIC J1837-073

European Physical Journal C: Particles and Fields, 2021
Recently the MAGIC telescope observed three TeV gamma-ray extended sources in the galactic plane in the neighborhood of radio SNR G24.7+0.6. Among them, the PWN HESS J1837-069 was detected earlier by the HESS observatory during its first galactic plane ...
Prabir Banik, Arunava Bhadra
doaj   +1 more source