Geoscience Letters

Official Journal of the Asia Oceania Geosciences Society (AOGS)

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  1. Review

    The transition region above sunspots

    Over decades, sunspots and their fine structures have been studied in detail at the photospheric level with different ground-based telescopes, as the surface of the Sun primarily emits light in the visible wav...

    Hui Tian, Tanmoy Samanta and Jingwen Zhang

    Geoscience Letters 2018 5:4

    Published on: 5 February 2018

  2. Review

    The Indonesian throughflow, its variability and centennial change

    The Indonesian Throughflow (ITF) is an important component of the upper cell of the global overturning circulation that provides a low-latitude pathway for warm, fresh waters from the Pacific to enter the Indi...

    Ming Feng, Ningning Zhang, Qinyan Liu and Susan Wijffels

    Geoscience Letters 2018 5:3

    Published on: 29 January 2018

  3. Research Letter

    Structural change of the frustule of diatom by thermal treatment

    The external skeleton, frustule, of a diatom is composed of hydrous amorphous silica and amino acids. In this study, the structural changes in the frustule of Chaetoceros calcitrans after thermal treatment up to ...

    Akane Arasuna and Masayuki Okuno

    Geoscience Letters 2018 5:1

    Published on: 12 January 2018

  4. Review

    Rebuild of the Bulletin of the International Seismological Centre (ISC), part 1: 1964–1979

    The data from the Bulletin of the International Seismological Centre (ISC) have always been and still remain in demand for a wide range of studies in Geosciences. The unique features of the Bulletin include lo...

    Dmitry A. Storchak, James Harris, Lonn Brown, Kathrin Lieser, Blessing Shumba, Rebecca Verney, Domenico Di Giacomo and Edith I. M. Korger

    Geoscience Letters 2017 4:32

    Published on: 19 December 2017

  5. Research Letter

    Bodrum–Kos (Turkey–Greece) Mw 6.6 earthquake and tsunami of 20 July 2017: a test for the Mediterranean tsunami warning system

    Various Tsunami Service Providers (TSPs) within the Mediterranean Basin supply tsunami warnings including CAT-INGV (Italy), KOERI-RETMC (Turkey), and NOA/HL-NTWC (Greece). The 20 July 2017 Bodrum–Kos (Turkey–G...

    Mohammad Heidarzadeh, Ocal Necmioglu, Takeo Ishibe and Ahmet C. Yalciner

    Geoscience Letters 2017 4:31

    Published on: 16 December 2017

  6. Research Letter

    Relationship between the Northern Pacific Gyre Oscillation and tree-ring cellulose oxygen isotopes in northeastern Japan

    The North Pacific Gyre Oscillation (NPGO) significantly imprints on hydrological fluctuations of the East Asian summer monsoon (EASM) region, but this has not yet been observed in proxy-based hydroclimate reco...

    Wataru Sakashita, Hiroko Miyahara, Yusuke Yokoyama, Takahiro Aze, Stephen P. Obrochta and Takeshi Nakatsuka

    Geoscience Letters 2017 4:29

    Published on: 12 December 2017

  7. Research Letter

    Ellerman bombs observed with the new vacuum solar telescope and the atmospheric imaging assembly onboard the solar dynamics observatory

    Ellerman bombs (EBs) are believed to be small-scale reconnection events occurring around the temperature minimum region in the solar atmosphere. They are often identified as significant enhancements in the ext...

    Yajie Chen, Hui Tian, Zhi Xu, Yongyuan Xiang, Yuliang Fang and Zihao Yang

    Geoscience Letters 2017 4:30

    Published on: 12 December 2017

  8. Letter

    Soil erosion modeled with USLE, GIS, and remote sensing: a case study of Ikkour watershed in Middle Atlas (Morocco)

    The Ikkour watershed located in the Middle Atlas Mountain (Morocco) has been a subject of serious soil erosion problems. This study aimed to assess the soil erosion susceptibility in this mountainous watershed...

    Aafaf El Jazouli, Ahmed Barakat, Abdessamad Ghafiri, Saida El Moutaki, Abderrahim Ettaqy and Rida Khellouk

    Geoscience Letters 2017 4:25

    Published on: 15 November 2017

  9. Research Letter

    Surface wind mixing in the Regional Ocean Modeling System (ROMS)

    Mixing at the ocean surface is key for atmosphere–ocean interactions and the distribution of heat, energy, and gases in the upper ocean. Winds are the primary force for surface mixing. To properly simulate upp...

    Robin Robertson and Paul Hartlipp

    Geoscience Letters 2017 4:24

    Published on: 2 November 2017

  10. Research Letter

    Using ultra-low frequency waves and their characteristics to diagnose key physics of substorm onset

    Substorm onset is marked in the ionosphere by the sudden brightening of an existing auroral arc or the creation of a new auroral arc. Also present is the formation of auroral beads, proposed to play a key role...

    I. J. Rae, K. R. Murphy, Clare E. J. Watt, Ian R. Mann, Zhonghua Yao, Nadine M. E. Kalmoni, Colin Forsyth and David K. Milling

    Geoscience Letters 2017 4:23

    Published on: 24 October 2017

  11. Research Letter

    Late Quaternary eruption of the Ranau Caldera and new geological slip rates of the Sumatran Fault Zone in Southern Sumatra, Indonesia

    Over the last decade, studies of natural hazards in Sumatra have focused primarily on great earthquakes and associated tsunamis produced by rupture of the Sunda megathrust. However, the Sumatran Fault and the ...

    Danny Hilman Natawidjaja, Kyle Bradley, Mudrik R. Daryono, Sonny Aribowo and Jason Herrin

    Geoscience Letters 2017 4:21

    Published on: 12 September 2017

  12. Review

    Asteroid spin-rate studies using large sky-field surveys

    Eight campaigns to survey asteroid rotation periods have been carried out using the intermediate Palomar Transient Factory in the past 3 years. 2780 reliable rotation periods were obtained, from which we ident...

    Chan-Kao Chang, Hsing-Wen Lin, Wing-Huen Ip, Thomas A. Prince, Shrinivas R. Kulkarni, David Levitan, Russ Laher and Jason Surace

    Geoscience Letters 2017 4:17

    Published on: 6 September 2017

  13. Research Letter

    Radiocarbon variability recorded in coral skeletons from the northwest of Luzon Island, Philippines

    The North Equatorial Current (NEC) bifurcates at the eastern coast of the Philippines and moves northward as the Kuroshio, a North Pacific western boundary current. The NEC bifurcation point and Kuroshio varia...

    Shoko Hirabayashi, Yusuke Yokoyama, Atsushi Suzuki, Yosuke Miyairi, Takahiro Aze, Fernando Siringan and Yasuo Maeda

    Geoscience Letters 2017 4:15

    Published on: 10 August 2017

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