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Hiroshi Naraoka

Hiroshi Naraoka

D-Index & Metrics

Environmental Sciences

D-Index
47
Citations
9231
World Ranking
5737
National Ranking
101

Overview

Hiroshi Naraoka is affiliated with Kyushu University in Japan and focuses their research on several areas within physics, astronomy, and earth sciences. Their work primarily spans the fields of Physics and Astronomy, Earth and Planetary Sciences, and Environmental Science.

The researcher's main fields of study include:

  • Physics and Astronomy
  • Earth and Planetary Sciences
  • Environmental Science

Within these broader disciplines, Naraoka explores various subfields such as:

  • Astronomy and Astrophysics
  • Ecology
  • Geophysics
  • Spectroscopy
  • Atmospheric Science

Their research topics cover multiple aspects of planetary and environmental sciences, including:

  • Astro and Planetary Science
  • Planetary Science and Exploration
  • Isotope Analysis in Ecology
  • Geological and Geochemical Analysis
  • Mass Spectrometry Techniques and Applications
  • High-pressure geophysics and materials
  • Geology and Paleoclimatology Research

Hiroshi Naraoka has published numerous papers in leading scientific journals. Some recent representative publications are:

  • Soluble organic molecules in samples of the carbonaceous asteroid (162173) Ryugu, 2023, Science
  • Samples returned from the asteroid Ryugu are similar to Ivuna-type carbonaceous meteorites, 2022, Science
  • Pebbles and sand on asteroid (162173) Ryugu: In situ observation and particles returned to Earth, 2022, Science
  • Preliminary analysis of the Hayabusa2 samples returned from C-type asteroid Ryugu, 2021, Nature Astronomy
  • Identifying the wide diversity of extraterrestrial purine and pyrimidine nucleobases in carbonaceous meteorites, 2022, Nature Communications

These publications reflect ongoing research related to asteroid Ryugu and carbonaceous meteorites, indicating a focus on the molecular and mineralogical analysis of extraterrestrial materials.

Their frequent coauthors include:

  • Shogo Tachibana
  • Kanako Sakamoto
  • Tomoki Nakamura
  • Ryuji Okazaki
  • T. Noguchi

Hiroshi Naraoka's works are often published in influential venues, especially those dedicated to planetary sciences and related fields. Prominent publication venues include:

  • Meteoritics and Planetary Science
  • Nature Communications
  • Science Advances
  • Geochimica et Cosmochimica Acta
  • Earth Planets and Space

Best Publications

  • Compound-specific δD–δ13C analyses of n-alkanes extracted from terrestrial and aquatic plants

    Yoshito Chikaraishi;Hiroshi Naraoka

  • Preliminary analysis of the Hayabusa2 samples returned from C-type asteroid Ryugu

    Unknown

  • Samples returned from the asteroid Ryugu are similar to Ivuna-type carbonaceous meteorites

    Unknown

  • Three-Dimensional Structure of Hayabusa Samples: Origin and Evolution of Itokawa Regolith

    Akira Tsuchiyama;Masayuki Uesugi;Takashi Matsushima;Tatsuhiro Michikami

  • Hydrogen and carbon isotopic fractionations of lipid biosynthesis among terrestrial (C3, C4 and CAM) and aquatic plants

    Yoshito Chikaraishi;Hiroshi Naraoka;Simon R. Poulson

  • Soluble organic molecules in samples of the carbonaceous asteroid (162173) Ryugu

    Unknown

  • δ13C and δD relationships among three n-alkyl compound classes (n-alkanoic acid, n-alkane and n-alkanol) of terrestrial higher plants

    Yoshito Chikaraishi;Hiroshi Naraoka

  • Oxygen isotopic compositions of asteroidal materials returned from Itokawa by the Hayabusa mission.

    Hisayoshi Yurimoto;Ken Ichi Abe;Masanao Abe;Mitsuru Ebihara

  • Irradiation History of Itokawa Regolith Material Deduced from Noble Gases in the Hayabusa Samples

    Keisuke Nagao;Ryuji Okazaki;Tomoki Nakamura;Yayoi N. Miura

  • Carbon and hydrogen isotopic fractionation during lipid biosynthesis in a higher plant (Cryptomeria japonica).

    Yoshito Chikaraishi;Hiroshi Naraoka;Simon R. Poulson

  • A new family of extraterrestrial amino acids in the Murchison meteorite.

    Toshiki Koga;Hiroshi Naraoka

  • Source identification of Malaysian atmospheric polycyclic aromatic hydrocarbons nearby forest fires using molecular and isotopic compositions

    Tomoaki Okuda;Hidetoshi Kumata;Mohamad Pauzi Zakaria;Hiroshi Naraoka

  • Molecular-isotopic stratigraphy of long-chain n-alkanes in Lake Baikal Holocene and glacial age sediments

    David Brincat;Keita Yamada;Ryoshi Ishiwatari;Hitoshi Uemura

  • Carbon and hydrogen isotope variation of plant biomarkers in a plant-soil system

    Yoshito Chikaraishi;Hiroshi Naraoka

  • Macromolecular organic matter in samples of the asteroid (162173) Ryugu

    Unknown

  • Carbon, nitrogen, and sulfur geochemistry of Archean and Proterozoic shales from the Kaapvaal Craton, South Africa

    Yumiko Watanabe;Hiroshi Naraoka;Hiroshi Naraoka;David J. Wronkiewicz;Kent C. Condie

  • A dehydrated space-weathered skin cloaking the hydrated interior of Ryugu

    Unknown

  • Origin of atmospheric polycyclic aromatic hydrocarbons (PAHs) in Chinese cities solved by compound-specific stable carbon isotopic analyses

    Tomoaki Okuda;Hidetoshi Kumata;Hiroshi Naraoka;Hideshige Takada

  • Isotopic evidence from an Antarctic carbonaceous chondrite for two reaction pathways of extraterrestrial PAH formation

    Hiroshi Naraoka;Akira Shimoyama;Kaoru Harada

  • Nucleobase synthesis in interstellar ices

    Yasuhiro Oba;Yoshinori Takano;Hiroshi Naraoka;Naoki Watanabe

  • Molecular distribution of monocarboxylic acids in Asuka carbonaceous chondrites from Antarctica.

    Hiroshi Naraoka;Akira Shimoyama;Kaoru Harada

  • Chemical and biological evolution of early Earth: Constraints from banded iron formations

    Hiroshi Ohmoto;Yumiko Watanabe;Kosei E. Yamaguchi;Hiroshi Naraoka

  • Geochemical and organic carbon isotope studies across the continental Permo-Triassic boundary of Raniganj Basin, eastern India

    A. Sarkar;H. Yoshioka;H. Yoshioka;M. Ebihara;H. Naraoka

  • Hydrogen isotopic fractionations during desaturation and elongation associated with polyunsaturated fatty acid biosynthesis in marine macroalgae.

    Yoshito Chikaraishi;Yaeko Suzuki;Hiroshi Naraoka

  • Molecular and isotopic abundances of long-chain n-fatty acids in open marine sediments of the western North Pacific

    Hiroshi Naraoka;Ryoshi Ishiwatari

  • δ13C and δD identification of sources of lipid biomarkers in sediments of Lake Haruna (Japan)

    Yoshito Chikaraishi;Hiroshi Naraoka

Frequent Co-Authors

Akira Tsuchiyama
Akira Tsuchiyama Ritsumeikan University
Takaaki Noguchi
Takaaki Noguchi Kyoto University
Mitsuru Ebihara
Mitsuru Ebihara Tokyo Metropolitan University
Tomoki Nakamura
Tomoki Nakamura Tohoku University
Keisuke Nagao
Keisuke Nagao University of Tokyo
Hisayoshi Yurimoto
Hisayoshi Yurimoto Hokkaido University
Ryoshi Ishiwatari
Ryoshi Ishiwatari Tokyo Metropolitan University
Minoru Ikehara
Minoru Ikehara Kōchi University
Toshifumi Mukai
Toshifumi Mukai Japan Aerospace Exploration Agency
Trevor Ireland
Trevor Ireland University of Queensland

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