Search Results - "Iwagami, N."

A Long‐Lived Sharp Disruption on the Lower Clouds of Venus by Peralta, J., Navarro, T., Vun, C. W., Sánchez‐Lavega, A., McGouldrick, K., Horinouchi, T., Imamura, T., Hueso, R., Boyd, J. P., Schubert, G., Kouyama, T., Satoh, T., Iwagami, N., Young, E. F., Bullock, M. A., Machado, P., Lee, Y. J., Limaye, S. S., Nakamura, M., Tellmann, S., Wesley, A., Miles, P.

“…Planetary‐scale waves are thought to play a role in powering the yet unexplained atmospheric superrotation of Venus. Puzzlingly, while Kelvin, Rossby, and…”
Get full text

Topographical and Local Time Dependence of Large Stationary Gravity Waves Observed at the Cloud Top of Venus by Kouyama, T., Imamura, T., Taguchi, M., Fukuhara, T., Sato, T. M., Yamazaki, A., Futaguchi, M., Murakami, S., Hashimoto, G. L., Ueno, M., Iwagami, N., Takagi, S., Takagi, M., Ogohara, K., Kashimura, H., Horinouchi, T., Sato, N., Yamada, M., Yamamoto, Y., Ohtsuki, S., Sugiyama, K., Ando, H., Takamura, M., Yamada, T., Satoh, T., Nakamura, M.

“…The existence of large stationary gravity waves was discovered during Akatsuki's first observation sequence in 2015. In this study, the further detection of…”
Get full text

Morphology and Dynamics of Venus's Middle Clouds With Akatsuki/IR1 by Peralta, J., Iwagami, N., Sánchez‐Lavega, A., Lee, Y. J., Hueso, R., Narita, M., Imamura, T., Miles, P., Wesley, A., Kardasis, E., Takagi, S.

“…The Venusian atmosphere is covered by clouds with superrotating winds whose accelerating mechanism is still not well understood. The fastest winds, occurring…”
Get full text

Correlation of Venusian Mesoscale Cloud Morphology Between Images Acquired at Various Wavelengths by Narita, M., Imamura, T., Lee, Y. J., Watanabe, S., Yamazaki, A., Satoh, T., Taguchi, M., Sato, T. M., Fukuhara, T., Yamada, M., Kouyama, T., Iwagami, N.

“…The differences and similarities in morphologies acquired across various wavelengths in simultaneously obtained Venus' dayside images may provide clues on…”
Get full text

Identification of Extreme Ultraviolet Emission Lines of the Io Plasma Torus Observed by Hisaki/EXCEED by Hikida, R., Yoshioka, K., Murakami, G., Kimura, T., Tsuchiya, F., Yamazaki, A., Yoshikawa, I., Iwagami, N.

“…The sulfur and oxygen ions in the Io plasma torus (IPT), which is located at a distance of ~6 RJ from Jupiter, emit light in various wavelength regions. In…”
Get full text

Hemispherical distribution of CO above the Venus’ clouds by ground-based 2.3 μm spectroscopy by Iwagami, N., Yamaji, T., Ohtsuki, S., Hashimoto, G.L.

“…The abundance of carbon monoxide in the Venus’ dayside atmosphere above the clouds was measured by ground-based 2.3 μm spectroscopy for 4 days. The…”
Get full text

Horizontal structure of sporadic E layer observed with a rocket-borne magnesium ion imager by Kurihara, J., Koizumi-Kurihara, Y., Iwagami, N., Suzuki, T., Kumamoto, A., Ono, T., Nakamura, M., Ishii, M., Matsuoka, A., Ishisaka, K., Abe, T., Nozawa, S.

“…To study the spatial structure of midlatitude sporadic E (Es) layers, the ultraviolet resonant scattering by magnesium ions (Mg+) in an Es layer was observed…”
Get full text

Longwave Infrared Camera onboard the Venus Climate Orbiter by Taguchi, M., Fukuhara, T., Imamura, T., Nakamura, M., Iwagami, N., Ueno, M., Suzuki, M., Hashimoto, G.L., Mitsuyama, K.

“…The Longwave Infrared Camera (LIR) onboard the first Japanese Venus mission, PLANET-C, or the Venus Climate Orbiter, operates in the middle infrared region…”
Get full text

Temperature enhancements and vertical winds in the lower thermosphere associated with auroral heating during the DELTA campaign by Kurihara, J., Oyama, S., Nozawa, S., Tsuda, T. T., Fujii, R., Ogawa, Y., Miyaoka, H., Iwagami, N., Abe, T., Oyama, K.-I., Kosch, M. J., Aruliah, A., Griffin, E., Kauristie, K.

“…A coordinated observation of the atmospheric response to auroral energy input in the polar lower thermosphere was conducted during the Dynamics and Energetics…”
Get full text

Hemispheric distributions of HCl above and below the Venus’ clouds by ground-based 1.7 μm spectroscopy by Iwagami, N., Ohtsuki, S., Tokuda, K., Ohira, N., Kasaba, Y., Imamura, T., Sagawa, H., Hashimoto, G.L., Takeuchi, S., Ueno, M., Okumura, S.

“…The abundance of hydrogen chloride (HCl) in the Venus atmosphere was measured by ground-based IR spectroscopy. The dayside measurements were performed in May…”
Get full text

Cloud structure in Venus middle‐to‐lower atmosphere as inferred from VEX/VIRTIS 1.74 μm data by Satoh, T., Imamura, T., Hashimoto, G. L., Iwagami, N., Mitsuyama, K., Sorahana, S., Drossart, P., Piccioni, G.

“…We have analyzed 1.74 μm nightside emission of Venus recorded using Visible and Infrared Thermal Imaging Spectrometer (VIRTIS) onboard European Space Agency's…”
Get full text

Electric field measurements of DC and long wavelength structures associated with sporadic-E layers and QP radar echoes by Pfaff, R., Freudenreich, H., Yokoyama, T., Yamamoto, M., Fukao, S., Mori, H., Ohtsuki, S., Iwagami, N.

“…Electric field and plasma density data gathered on a sounding rocket launched from Uchinoura Space Center, Japan, reveal a complex electrodynamics associated…”
Get full text

Cloud structure in Venus middle-to-lower atmosphere as inferred from VEX/VIRTIS 1.74 mum data by Satoh, T, Imamura, T, Hashimoto, G L, Iwagami, N, K Mitsuyama, Sorahana, S, Drossart, P, Piccioni, G

“…We have analyzed 1.74 m nightside emission of Venus recorded using Visible and Infrared Thermal Imaging Spectrometer (VIRTIS) onboard European Space Agency's…”
Get full text

Wave signature in the Venus dayside cloud layer at 58―64 km observed by ground-based infrared spectroscopy by HOSOUCHI, M, KOUYAMA, T, IWAGAMI, N, OHTSUKI, S, TAKAGI, M

Get full text

Overview of Venus orbiter, Akatsuki by Nakamura, M., Imamura, T., Ishii, N., Abe, T., Satoh, T., Suzuki, M., Ueno, M., Yamazaki, A., Iwagami, N., Watanabe, S., Taguchi, M., Fukuhara, T., Takahashi, Y., Yamada, M., Hoshino, N., Ohtsuki, S., Uemizu, K., Hashimoto, G. L., Takagi, M., Matsuda, Y., Ogohara, K., Sato, N., Kasaba, Y., Kouyama, T., Hirata, N., Nakamura, R., Yamamoto, Y., Okada, N., Horinouchi, T., Yamamoto, M., Hayashi, Y.

“…The Akatsuki spacecraft of Japan was launched on May 21, 2010. The spacecraft planned to enter a Venus-encircling near-equatorial orbit in December 7, 2010;…”
Get full text

Ground-based observation of the Venus 1.27-μm O 2 airglow by Ohtsuki, S., Iwagami, N., Sagawa, H., Kasaba, Y., Ueno, M., Imamura, T.

“…We conducted near-infrared imaging spectroscopy of the nightside of Venus with a 1.88-m telescope at Okayama Astrophysical Observatory, Japan. The 1.3-μm…”
Get full text

Numerical simulation of 3-D flow around sounding rocket in the lower thermosphere by KURIHARA, J, OYAMA, K.-I, IWAGAMI, N, TAKAHASHI, T

“…Numerical simulations using the Direct Simulation Monte Carlo (DSMC) method are known to be useful for analyses of aerodynamic effects on in-situ rocket…”
Get full text

Rocket observations of atomic oxygen density and airglow emission rate in the WAVE2000 campaign by Iwagami, N., Shibaki, T., Suzuki, T., Sekiguchi, H., Takegawa, N., Morrow, W.H.

“…Atomic oxygen density and airglow volume emission rate profiles measured in the rocket experiment S-310-29 carried out as a part of the Waves in Airglow…”
Get full text

Rocket measurement of electron density and atomic oxygen density modulated by atmospheric gravity waves by Yoshimura, R., Iwagami, N., Oyama, K.-I.

“…The results of a rocket experiment are presented and a parameterization method of gravity wave analysis using rocket data is established. The rocket experiment…”
Get full text

Vibrational-rotational temperature measurement of N 2 in the lower thermosphere by the rocket experiment by Kurihara, J., Oyama, K.-I., Suzuki, K., Iwagami, N.

“…The vibrational temperature (T v), the rotational temperature (T r) and the number density of atmospheric molecular nitrogen (N 2) were measured in situ by a…”
Get full text