Earth science & Astronomy

• Variation de la princesse Aurore and the shadow kingdom Economic and location analysis of the ballet industry using night light

  Shoichi Otomo

  • Night light
  • Satellite data
  • Ballet
  • Indicator
  • Econometrics

  Downloads ：1 - Submitted 2025-12-01 11:40:06 UTC - Posted 2025-12-06 07:23:01 UTC

  • オーロラ姫と影の王国PDF (日本語)

• Metasomatism at a metapelite–ultramafic rock contact at the subduction interface: Insights into mass transfer and fluid flow at the mantle wedge corner

  Ryosuke Oyanagi, Masaoki Uno, Atsushi Okamoto

  • Metasomatism
  • Mass transfer
  • Mantle wedge
  • Serpentinite
  • Sanbagawa belt

  Downloads ：50 - Submitted 2025-11-11 06:22:29 UTC - Posted 2025-11-12 01:00:15 UTC

  • PDF

• Carbonation of oceanic serpentinite related to extensive intraplate magmatism

  Oyanagi, Ryosuke, Sawada, Hikaru, Qing Chang, Yoshida, Kenta, Satish-Kumar, Madhusoodhan

  • Hydrothermal alteration

  Downloads ：125 - Submitted 2025-09-19 03:47:09 UTC - Posted 2025-09-21 23:49:27 UTC

  • PDF

• A Brief Study on the M8.7 Earthquake in Kamchatka Peninsula on July 29, 2025

  Lijun Chen

  • Seismo-Geothermics,
  • seismic cone tectonic (SCT for short),
  • Subshell seismic activity ε0,
  • disaster chain system,
  • Okhotsk Sea

  Downloads ：143 - Submitted 2025-09-11 02:45:10 UTC - Posted 2025-09-17 08:00:23 UTC

  • PDF

• Bayesian optimization for parameter estimation of a local particle filter

  Shoichi AKAMI, Keiichi KONDO, Hiroshi L. TANAKA, Mizuo KAJINO

  • Local particle filter
  • Parameter estimation
  • Bayesian optimization
  • Gaussian process regression

  Downloads ：221 - Submitted 2025-05-08 04:46:33 UTC - Posted 2025-09-02 01:25:10 UTC - Versions: 3

  • PDF_ver.3
  • Supplement_WORD_ver.3

• A discussion on the hypothesis that the universe is a black hole From black hole to atom and nuclide

  Masato Yamawaki

  • black hole cosmology
  • Schwarzschild radius
  • event horizon
  • Newtonian mechanics
  • Special relativity
  • radiation
  • nuclear force
  • philosophy of science

  Downloads ：3410 - Submitted 2022-05-05 20:20:45 UTC - Posted 2025-07-07 04:18:53 UTC - Versions: 8

  • PDF_ver.8 (日本語)
  • Supplement-1_XLSX_ver.8 (日本語)
  • Supplement-2_XLSX_ver.8 (日本語)

• Remarkable Features of Spiral Galaxies Revealed by a New Gravitational Model

  Yutaka Akiba

  • spiral galaxies
  • rotation curves
  • Newtonian mechanics
  • spiral force
  • Kepler's law
  • spiral arm
  • geometric shape
  • centripetal force
  • proper motion
  • measurement variation
  • multiple helical structure
  • dark matter

  Downloads ：165 - Submitted 2024-09-10 08:00:29 UTC - Posted 2025-02-12 23:18:49 UTC

  • PDF

• The evoluting process of Astronomical object is demonstrated by the principle of inertia

  HeQun, HeXuan

  • Solar system
  • nebula theory
  • conservation of angular momentum
  • moment of inertia
  • balance equation
  • gravity theorem
  • inertial surge moment

  Downloads ：154 - Submitted 2024-12-05 12:55:58 UTC - Posted 2024-12-23 03:55:44 UTC

  • PDF

• Tsunami Source Modeling of the Earthquake beneath Hyuganada Sea on 8 August 2024 using Ocean-bottom Pressure Gauge Records of N-net and DONET

  Tatsuya Kubota, Hisahiko Kubo, Takayuki Miyoshi, Wataru Suzuki, Shin Aoi, Takashi Kunugi, Tetsuya Takeda

  • Nankai Trough
  • Hyuganada Sea
  • Tsunami
  • N-net
  • DONET

  Downloads ：421 - Submitted 2024-11-22 03:07:06 UTC - Posted 2024-11-28 01:56:25 UTC

  • PDF (日本語)

• The inertial principle is used to demonstrate the force source of space planets

  Qun He

  • Moment of inertia
  • Parallel axis principle
  • Equilibrium equation
  • Inertial surging force
  • Acceleration of gravity

  Downloads ：304 - Submitted 2024-10-04 12:05:56 UTC - Posted 2024-10-22 09:08:09 UTC

  • PDF

• Response of convection to forcing that creates a cold pool

  Masaki Satoh, Shunnosuke Nakai, Shuhei Matsugishi

  • cold pools
  • radiative-convective equilibrium
  • convective aggregation

  Downloads ：172 - Submitted 2024-09-24 09:26:38 UTC - Posted 2024-09-27 02:50:56 UTC

  • PDF

• Maintenance Mechanisms of Orographic Quasi-Stationary Convective Band Formed over the Eastern Part of Shikoku, Japan

  Akira Nishii, Taro Shinoda, Koji Sassa

  • Mesoscale convective system
  • Localized heavy rainfall
  • Quasi-stationary convective band
  • Orographic precipitation

  Downloads ：181 - Submitted 2024-06-19 07:55:05 UTC - Posted 2024-06-24 01:50:33 UTC

  • PDF

• Spatiotemporal Distribution of b Value Estimated from Seismic Activity in the Northern Part of Tokushima Prefecture A Report as of April 2024 in Tokushima City and Surrounding Municipalities

  Toshiki SHIMBARU

  • b value
  • Spatiotemporal distribution
  • Seismic activity
  • Kamiura-Nishitsukinomiya fault
  • Northern part of Tokushima Prefecture
  • Tokushima City

  Downloads ：272 - Submitted 2024-05-15 06:20:57 UTC - Posted 2024-05-20 05:23:00 UTC

  • PDF (日本語)

• Spatiotemporal Distribution of b Value Estimated from Seismic Activity in the Northern Part of Tokushima Prefecture A Report as of April 2024 in Tokushima City and Surrounding Municipalities

  Toshiki SHIMBARU

  • b value
  • Spatiotemporal distribution
  • Seismic activity
  • Kamiura-Nishitsukinomiya fault
  • Northern part of Tokushima Prefecture
  • Tokushima City

  Downloads ：161 - Submitted 2024-05-14 01:52:17 UTC - Posted 2024-05-14 07:53:19 UTC

  • PDF

• Direction of Tornado Motions and Its Relationship with the Large-scale Wind Field

  Yuri Mita, Tsubasa Kohyama

  • tornado
  • direction of movement
  • circular statisttics
  • typhoon
  • supercell

  Downloads ：494 - Submitted 2023-11-11 01:45:08 UTC - Posted 2024-04-01 09:59:36 UTC - Versions: 2

  • PDF_ver.2

• On residual 137Cs on shallow rugged reefs lying inshore of Fukushima: Part 2 Methodological improvements

  Fumie Suzuki, Masataka Imazeki, Jiro Yamada, Yutaka Yamada, Noriyuki Kumagai, Hideo Ohashi, Hiromi Shibata, Ken-ichi Nogami, Nobuhiro Shiotani

  • underwater CsI(Tl) gamma-ray spectrometer
  • in situ and stationary measurement
  • 137Cs
  • shallow rugged reefs

  Downloads ：235 - Submitted 2024-01-14 16:48:15 UTC - Posted 2024-01-20 00:55:39 UTC

  • PDF
  • Supplement_PDF

• On residual 137Cs on shallow rugged reefs lying inshore of Fukushima: Part 1 Levels, distribution, and flux of radiations

  Fumie Suzuki, Hideo Ohashi, Ken-ichi Nogami, Hiromi Shibata, Hisayuki Arakawa, Kentaro Umeda, Teiji Kobayasi, Nobuhiro Shiotani

  • Fukushima Daiichi Nuclear Power Plant
  • Levels of 137Cs on rugged reefs
  • Simulation of transport of 662 keV gamma rays
  • Scalar flux of low energy gamma rays

  Downloads ：258 - Submitted 2024-01-14 15:50:17 UTC - Posted 2024-01-20 00:52:44 UTC

  • PDF
  • Supplement_PDF

• NuSTAR hard X-ray observations of the merging cluster of galaxies RX J1347.5-1145

  Mio Shibata, Naomi Ota

  • cosmology
  • X-rays
  • cluster of galaxies
  • intracluster medium

  Downloads ：427 - Submitted 2023-11-26 09:53:18 UTC - Posted 2023-12-04 08:37:58 UTC

  • PDF (日本語)

• Development of a Temperature Prediction Method Combining Deep Neural Networks and a Kalman Filter

  Takuya Inoue, Tsuyoshi Thomas Sekiyama, Atsushi Kudo

  • deep convolutional neural network
  • statistical post-processing
  • temperature forecast
  • Kalman filter
  • fine-tuning

  Downloads ：233 - Submitted 2023-09-19 04:09:03 UTC - Posted 2023-09-21 02:58:47 UTC

  • PDF

• Mechanism of secondary eyewall formation in tropical cyclones revealed by sensitivity experiments on the mesoscale descending inflow

  Kyohei Kasami, Masaki Satoh

  • tropical cyclone
  • secondary eyewall formation
  • eyewall replacement cyclone
  • mesoscale descending inflow

  Downloads ：233 - Submitted 2023-06-06 16:32:21 UTC - Posted 2023-06-08 09:20:48 UTC

  • PDF

• A New Gravitational Model of Spiral Galaxies Based on Newtonian Mechanics

  Yutaka Akiba

  • spiral galaxies
  • Newtonian mechanics
  • bulge
  • disk
  • rotation curve
  • Universal gravitation
  • gravitational principle
  • centripetal force
  • interstellar force
  • spiral force
  • dark matter

  Downloads ：414 - Submitted 2023-02-01 06:12:37 UTC - Posted 2023-04-10 10:13:37 UTC - Versions: 2

  • PDF_ver.2

• A New Closure Assumption and Formulation Based on the Helmholtz Decomposition in the Generalized Velocity Track Display

  Satoki Tsujino, Takeshi Horinouchi, Udai Shimada

  • Tropical cyclone
  • Doppler weather radar
  • Typhoon
  • Hurricane
  • Mesoscale meteorology

  Downloads ：307 - Submitted 2023-02-24 03:45:14 UTC - Posted 2023-02-28 05:29:37 UTC

  • PDF

• Characteristics analysis of the senjo-kousuitai conditions in the Kyushu region in early July: The case of the July 2020 heavy rainfall event

  Masaki Satoh, Keisuke Hosotani

  • senjo-kousuitai
  • water vapor flux
  • storm-relative helicity
  • western North Pacific high

  Downloads ：254 - Submitted 2022-10-07 06:01:44 UTC - Posted 2022-10-14 09:11:02 UTC

  • PDF

• Thermodynamic geometric analysis of D-dimensional RN black hole

  Wen-Xiang Chen, Yao-Guang Zheng

  • RN black holes
  • six-dimensional
  • D-dimensional

  Downloads ：359 - Submitted 2022-06-10 22:17:41 UTC - Posted 2022-06-16 01:17:51 UTC

  • PDF

• The relative roles of the sea surface temperature over the Pacific Meridional Mode and Indian Ocean on tropical cyclone genesis over the North Pacific in super El Niño of 2015

  Takahiro Ishiyama, Masaki Satoh, Yohei Yamada

  • tropical cyclone
  • El Niño
  • Pacific Meridional Mode
  • monsoon trough
  • vertical shear

  Downloads ：381 - Submitted 2022-05-16 07:34:59 UTC - Posted 2022-05-18 01:48:20 UTC

  • PDF
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