Publications

Journal Papers :

  1. Morihiro HARADA, Yasuyuki MARUYA, Toshiharu KOJIMA, Daisuke MATSUOKA, Yujin NAKAGAWA, Shintaro KAWAHARA and Fumiaki ARAKI, Flood frequency analysis and impact assessment for climate change in the Nagara River basin, Journal of JSCE, Vol.8, Issue 1, pp.79-86, 2020, https://doi.org/10.2208/journalofjsce.8.1_79.
  2. Nakayama K., Y. Maruya, K. Matsumoto, K. Komai and T. Kuwae, Nitrogen fluxes between the ocean and a river basin using stable isotope analysis, Estuarine, Coastal and Shelf Science, Vol.212, pp.286-293, 2018, https://doi.org/10.1016/j.ecss.2018.07.015.
  3. Nakayama K., Y. Maruya, T. Nakaegawa, K. Komai, K. Kokubo, T. Ishida and T. Okada, Projection of “strong wind” events enhancing recovery from hypoxia in Tokyo Bay, Japan, Hydrological Processes, Vol.27, No.23, pp.3280-3291, 2013. DOI: 10.1002/hyp.9829.
  4. Nakamoto A., K. Nakayama, T. Shintani, Y. Maruya, K. Komai, T. Ishida and Y. Makiguchi, Adaptive management in Kushiro Wetland in the context of salt wedge intrusion due to sea level rise, Hydrological Research Letters, Vol. 7, No. 1, pp.1-5, 2013.
  5. Nakayama K., T. Shintani, K. Kokubo, Y. Maruya, T. Kakinuma, K. Komai and T. Okada, Residual current over a uniform slope due to breaking of internal waves in a two-layer system, Journal of Geophysical Research, vol.117, C10002, 11pp., 2012, doi:10.1029/2012JC008155.
  6. Nakayama K., A. Aynur, T. Nakaegawa and Y. Maruya, Evaluation of nutrient flux from Shiretoko into the ocean using MRI-GCM, Hydrological Research Letters, Vol.5, pp.47-51, 2011, doi:10.3178/hrl.5.47.
  7. Maruya Y., K. Nakayama, T. Shintani and M. Yonemoto, Evaluation of entrainment velocity induced by wind stress in a two-layer system, Hydrological Research Letters, Vol. 4, pp.70-74, 2010, doi:10.3178/hrl.4.70.
  8. Ishida T., K. Nakayama, T. Okada, Y. Maruya, K. Onishi and M. Omori, Suspended sediment transport in a river basin estimated by chemical element analysis, Hydrological Research Letters, Vol.4, pp.55-59, 2010, doi:10.3178/hrl.4.55.

Refereed conference papers

  1. Maruya Y., Satoshi Watanabe, Prediction of river flow regime under climate change in a acold region using large ensemble of climate experiment, 27th IUGG General Assembly, 2019, accepted. (Poster Presentation)
  2. Maruya Y., Satoshi Watanabe, Climate change impact assessment on suspeded sediment loading using large ensemble of climate experiments -a case study in mountainous small basin, Hokkaido-, Asia Oceania Geosciences Society 16th Annual Meeting, 2019, accepted.
  3. Maruya Y., Research prospect on integration of hydrology and ecology in river basin study, The 3rd of International symposium of river basin studies -towards the interdisciplinary study for sustainable basin environment and human well-being-, 2019. (Oral Presentation)
  4. Maruya Y., Climate change impact assessment on nutrient circulation using General Circulation Models output in Shiretoko, Japan, Global Land Programme 2018 Asia Conference, 2018. (accepted)
  5. Maruya Y., Satoshi Watanabe, Creation of pseudo observational data using reanalysis data for climate change impact assessment in a data scarce catchment, Asia Oceania Geosciences Society 2018, 2018. (accepted)
  6. Yamanaka T., A. Konja, S. Abe, T. Iwasaki, K. Sai, Y. Maruya, Construction of flood prediction model by deep learning for large scale rivers and consideration on constant setting, Asia Oceania Geosciences Society 2018, 2018. (accepted)
  7. Komai K., Y. Maruya, H. Kasama, N. Nobuyama, T. Sato, Projection of dissolved organic carbon supply from Kushiro Mire basin to the coastal region of the Oyashio using multi GCMs, Asia Oceania Geosciences Society 2018, 2018. (accepted) (invited)
  8. Maruya Y., S. Watanabe, T. Tanaka, Y. Tachikawa, Statistical correction method for precipitation of re-analysis data based on observational data in local scale, The 1st of International symposium of river basin studies -towards the interdisciplinary study for sustainable basin environment and human well-being-, 2017. (Poster Presentation)
  9. Adiyanti S., B. D. Eyre, Y. Maruya, P. Mangion, M. R. Hipsey, Stable isotopes and Bayesian framework reduce parameter uncertainty of sub-tropical catchment nutrient export and riverine-estuarine biogeochemical cycling models, The 1st of International symposium of river basin studies -towards the interdisciplinary study for sustainable basin environment and human well-being-, 2017.
  10. Maruya Y., S. Watanabe, K. Nakayama, T. Tanaka and Y. Tachikawa, Climate Change Impact Assessment on Nutrient Discharge Using Multi-Model and Multi-Scenario of GCMs in Shiretoko, The 7th International Conference on Water Resources and Environment Research, 2016. (accepted) (Oral Presentation)
  11. Maruya Y., M. R. Hipsey, S. Watanabe, S. Adiyanti and Y. Tachikawa, Application of reanalysis data for assessing the impact of climate change on river flows in a data scarce catchment, The 12th International Conference on Hydroinformatics, 2016. (accepted) (Oral Presentation)
  12. Maruya Y., M. R. Hipsey, S. Watanabe, S. Adiyanti and Y. Tachikawa, Bias Correction of reanalysis data for assessment of climate change effects on river system in a data scarce area : a case study for precipitation and temperature, American Geophysical Union 2015, GC33A-1267 (abstract ID : 78751), 2015.
  13. Maruya Y., K. Nakayama, T. Nakaegawa, T. Inoue, M. Komata, K. Komai and Y. Tachikawa, Projection of Nutrient Discharge by Using Different Bias Correction Method for Precipitation in Shiretoko, Asia Oceania Geosciences Society 2014, 2014. (accepted)
  14. Kokubo K., K. Nakayama, T. Shintani, T. Ishida, Y. Maruya and K. Komai, Suspended Sediment Transport in a River Basin by using X-ray Fluorescence Analysis, 6th Conference of the APHW, 2013.
  15. Sugawara Y., Y. Maruya, K. Komai, K. Nakayama and J. Kato, Comparison of Water Circulation Mechanisms between the 1970s and the 2000s in Kushiro Wetland, Proceedings of the 11th International Conference on Civil and Environmental Engineering, pp.89-90, 2012.
  16. Nakamoto A., K. Nakayama, T. Shintani, Y. Maruya, T. Ishida, K. Houmura and Y. Makiguchi, Estimation of salt wedge intrusion in Kushiro wetland due to sea level rise, Proceedings of 18th Congress of the Asia and Pacific Division of the International Association for Hydro-Environment Engineering and Research, pp.159-160, 2012.
  17. Nakayama K., T. Kuwae, Y. Maruya, A. Abliz, T. Inoue and K. Tateyama, Nutrient circulation due to the interaction between terrestrial and oceanic systems, the 50th ECSA conference, O7.22, 2012.
  18. Nakayama K., T. Shintani, T. Kakinuma, Y. Maruya, Y. Yonome, M. Yonemoto and I. Nakauchi, Influence of Stokes drift on salt wedge intrusion evaluated using fully-nonlinear and strongly dispersive wave equations, Proceedings of International Conference of Coastal Engineering, Vol. 32, currents.34, pp.1-6, 2010.
  19. Maruya Y., A. Abuliz, K. Nakayama, T. Kuwae, T. Okada, T. Ishida, Mass transport and nutrient circulation evaluated by stable isotope analysis and chemical decomposition, 5th Conference of the APHW, pp.428-435, 2010.
  20. Nakayama K., Y. Maruya, T. Shintani, K. Shimizu, Y. Yonome and M. Yonemoto, Influence of internal waves on interfacial level in Lake Abashiri, International Symposium on Ecohydraulics, pp.133-141, 2010.
  21. Nakayama K., T. Kakinuma, D. Horimatsu, Y. Sugawara, Y. Maruya and Y. Yonome, Reproduction of flow over sand waves using the variation principle River, Estuary and Coastal Morphodynamics, Vol. 6, pp.183-188, 2009.

Refereed Japanese Journal papers (in Japanese with English abstract):

  1. Maruya Y., S. Watanabe and I. Tamagawa, Number of observation period required for development of statistical correction method for JRA-55 precipitation, Journal of Japan Society of Civil Engineers, Ser. B1 (Hydraulic Engineering), Vol.76, No.2, pp.43-48, 2020.
  2. Matsumoto H., K. Nakayama, K. Komai, K. Tada, D. Sasaki, K. Watanabe, A. Kubo and Y. Maruya, Estimation of vertical distribution of dissolved inorganic carbon due to eelgrass in a stratified fluid, Journal of Japan Society of Civil Engineers, Ser. B3 (Ocean Engineering), Vol.76, No.2, pp.869-874, 2020.
  3. Maruya Y., S. Watanabe and I. Tamagawa, Comparison between statistical correction method and dynamical downscaling for JRA-55 in river basin scale toward climate change impact assessment, Journal of Japan Society of Civil Engineers, Ser. B1 (Hydraulic Engineering), Vol.75, No.2, 2019.
  4. Kobayashi K., N. Kinoshita, Y. Maruya, Y. Kawabe and A. Nakamura, A study on weather index insurance pricing using d4PDF, Journal of Japan Society of Civil Engineers, Ser. B1 (Hydraulic Engineering), Vol.75, No.2, 2019.
  5. Muraoka H., Y. Maruya and S. Nagai, Long-term and multidisciplinary research on carbon cycling and forest ecosystem functions in a mountainous landscape: development and perspectives, Journal of Geography (Chigaku Zasshi), Vol.128(1), pp.129-146, 2019, doi:10.5026/jgeography.128.129.
  6. Tanaka T., S. Watanabe, S. Kotsuki, Y. Hayashi, Y. Maruya, Y. Touge, D. Yamazaki, T. Kimura, M. Tanoue, T. Egusa, M. Hashimoto and N. Nakayoshi, Frontiers in hydrology and water resources research – WACCA generation’s challenges-, Journal of Japan Society of Hydrology and Water Resources, Vol.31, No.6, pp.509-540, 2018.
  7. Kojima T., Y. Maruya and M. Harada, Proposal of the correction formula of probability rainfall produced by 20-km d4PDF fro Gifu prefecture, Journal of Japan Society of Civil Engineers, Ser. B1 (Hydraulic Engineering), Vol.74, No.5, pp.133-138, 2018.
  8. Maruya Y., M. Harada, R. Ito, H. Kawase, K. Dairaku and H. Sasaki, Uncertainty of regional climate model and impact assessment model toward climate change impact assessment, Journal of Japan Society of Civil Engineers, Ser. B1 (Hydraulic Engineering), Vol.74, No.5, pp.103-108, 2018.
  9. Harada M., Y. Maruya, R. Ito, N. N. Ishizaki, H. Kawase, K. Dairaku and H. Sasaki, Influence of terrain model in 5km dynamical downscaling of JRA-55 on flood runoff analysis, Journal of Japan Society of Civil Engineers, Ser. B1 (Hydraulic Engineering), Vol.74, No.5, pp.103-108, 2018.
  10. Maruya Y., M. Harada, R. Ito, H. Kawase, K. Dairaku and H. Sasaki, Influences of spatial resolution of rainfall distribution on runoff analysis toward climate change impact assessment, Journal of Japan Society of Civil Engineers, Ser. G (Environmental Research), Vol.74, No.5, pp.147-156, 2018.
  11. Kasama H., K. Komai, Y. Maruya and T. Sato, Towards future projection on dissolved organic carbon provided from the Kushiro river basin to the coast of the Oyashio, Journal of Japan Society of Civil Engineers, Ser. B1 (Hydraulic Engineering), Vol.74, No.4, pp.133-138, 2018.
  12. Harada M., Y. Maruya, T. Kojima, D. Matsuoka, Y. Nakagawa, S. Kawahara and F. Araki, Flood frequency analysis and impact assessment for climate change in the Nagara river basin, Journal of Japan Society of Civil Engineers, Ser. B1 (Hydraulic Engineering), Vo.74, No.4, pp.181-186, 2018.
  13. Maruya Y., S. Watanabe, T. Tanaka and Y. Tachikawa, Statistical correction method for precipitation of JRA-55 in local scale toward climate change impact assessment, Journal of Japan Society of Civil Engineers, Ser. B1 (Hydraulic Engineering), Vol.73, No.4, pp.115-120, 2017.
  14. Nakayama K., K. Komai, Y. Maruya, K. Matsumoto, S. Sakaguchi and T. Kuwae, Estimation of the fine sediment transport using fluorescent X ray and nitrogen cycle using stable isotope, Journal of Japan Society of Civil Engineers, Ser. B1 (Hydraulic Engineering), Vol.73, No.4, pp.1177-1182, 2017.
  15. Sano F., K. Nakayama, T. Yamada, Y. Sato, Y. Maruya, K. Komai, Y. Oyama and I. Wakana, Projection of wind waves which induce rotary motion of Marimo in lake Akan, Journal of Japan Society of Civil Engineers, Ser. B3 (Ocean Engineering), Vol. 72, No.2, pp.988-993, 2016.
  16. Maruya Y., M. R. Hipsey, S. Watanabe, S. Adiyanti and Y. Tachikawa, Climate change impact assessment method in observation data scarce basin, Journal of Japan Society of Civil Engineers, Ser. B1 (Hydraulic Engineering), Vol.72, No.4, pp.37-42, 2016.
  17. Beitia C., K. Nakayama, Y. Maruya, N. Ohtsu, S. Yamasaki, M. Yamane, A. S. J. Wyatt and K. Komai, Suspended sediment transport estimation by X-RAY fluorescence analysis, Journal of Japan Society of Civil Engineers, Ser. B1 (Hydraulic Engineering), Vol.72, No.4, 1039-1044, 2016. (in English)
  18. Okada T., Y. Maruya, K. Nakayama and E. Iseri, A Study on Restoration of Eelgrass (Zostera marina) Damaged by Tsunami in Miyako Bay, Journal of Japan Society of Civil Engineers, Ser. B2 (Coastal Engineering), Vol.70, No.2, pp.1186-1190, 2014.
  19. Yoshie Y., Y. Maruya, K. Nakayama, K. Komai, T. Shintani, K. Watanabe, K. Ichimi and T. Kuwae, Investigation of water quality and flow characteristic in lake Komuke, Journal of Japan Society of Civil Engineers, Ser. B3 (Ocean Engineering), Vol.70, No.2, pp.1176-1181, 2014.
  20. Maruya Y., K. Nakayama, T. Nakaegawa, T. Inoue, M. Komata, T. Ishida and K. Komai, Projection of nutrient discharge by using MRI-AGCM3.1S in Shiretoko, Journal of Japan Society of Civil Engineers, Ser. B1 (Hydraulic Engineering), Vol.70, No.4, pp.1219-1224, 2014.
  21. Komai K., T. Hibino, S. Nakashita, Y. Totsuka, R. Ito, Y. Maruya and K. Nakayama, Estimation of settling velocity and characteristics of colloid interface on organic mud in a brackish lake, Journal of Japan Society of Civil Engineers, Ser. B1 (Hydraulic Engineering), Vol.70, No.4, pp.1585-1590, 2014.
  22. Maruya Y., K. Nakayama, K. Komai, K. Watanabe, E. Miyoshi, K. Ichimi and T. Kuwae, Fundamental study on flow characteristics by using field observation in lake Komuke, Journal of Japan Society of Civil Engineers, Ser. B3 (Ocean Engineering), Vol. 69, No.2, pp.1228-1233, 2013.
  23. Nakayama K., T. Shintani, K. Shimizu, N. Kishita, T. Okada, Y. Sato, Y. Maruya and K. Komai, Mesh aspect ratio and non-hydrostatic effect on internal wave breaking in Tokyo bay, Journal of Japan Society of Civil Engineers, Ser. B3 (Ocean Engineering), Vol. 69, No.2, pp.742-747, 2013.
  24. Maruya Y., K. Nakayama, M. Sasaki, T. Shintani, K. Komai, T. Okada, Y. Sugawara and N. Muneta, Clarification of mechanisms of methane emission in lake Abashiri, Journal of Japan Society of Civil Engineers, Ser. B1 (Hydraulic Engineering), Vol.69, No.4, pp.1435-1440, 2013.
  25. Nakayama K., K. Kokubo, T. Shintani, J. Otsuka, Y. Maruya, Y. Watanabe, K. Komai and T. Okada, Current induced by breaking of internal Kelvin waves, Journal of Japan Society of Civil Engineers, Ser. B2 (Coastal Engineering), Vol. 68, No.2, pp.926-930, 2012.
  26. Maruya Y., Y. Yoshie, K. Nakayama, T. Shintani, N. Kinoshita, K. Komai, K. Kokubo and J. Kato, Study of applicability of partial cell in Tokyo Bay, Journal of Japan Society of Civil Engineers, Ser. B3 (Ocean Engineering), Vol. 68, No.4, pp.997-1002, 2012.
  27. Aynur A., K. Nakayama, Y. Maruya, T. Inoue, T. Kuwae, K. Tateyama, T. Okada, J. Kato and T. Ishida, Clarification of mechanisms of nutrient circulation between ocean and inland in Shiretoko, Journal of Japan Society of Civil Engineers, Ser. B1 (Hydraulic Engineering), Vol. 68, No.4, pp.721-725, 2012.
  28. Nakayama K., C. Beitia, E. Vallester, R. Pinzon, J. Fabrega, T. Nakaegawa, Y. Maruya, J. Espinosa, B. Olmedo, J. Kato and K. Komai, Increase in simple precipitation intensity index in Panama, Journal of Japan Society of Civil Engineers, Ser.B1 (Hydraulic Engineering), Vol.68, No.4, pp.163-168, 2012.
  29. Ishida T., H. Hayakawa, K. Nakayama, T. Okada, Y. Maruya, K. Komai, N. Hotta, H. Fujii and J. Kato, Evaluation of suspended sediment transport in a river basin by using chemical composition analysis, Journal of Japan Society of Civil Engineers, Ser. B1 (Hydraulic Engineering), Vol. 68, No.4, pp.637-642, 2012.
  30. Maruya Y., A. Aynur, K. Nakayama, T. Nakaegawa, F. Furukawa, K. Komai and Y. Yonome, Profection of duration of strong wind enhancing recovery from hypoxia in Tokyo bay, Journal of Japan Society of Civil Engineers, Ser. B2 (Coastal Engineering), Vol. 67, No.2, pp.921-925, 2011.
  31. Aynur A., Y. Maruya, K. Nakayama, T. Nakaegawa and K. Furukawa, Appliation of GCM outputs into projection of water quality in Tokyo Bay, Journal of Japan Society of Civil Engineers, Ser. B3 (Ocean Engineering), Vol. 67, No.4, pp.277-282, 2011.
  32. Aynur A., K. Nakayama, Y. Maruya, T. Kuwae, T. Okada and T. Ishida, Interaction between inland and sea through Rausu river using isotope analysis, Journal of Japan Society of Civil Engineers, Ser. B1 (Hydraulic Engineering), Vol. 67, No.4, pp.1303-1308, 2011.
  33. Nakamoto A., T. Shintani, K. Nakayama, Y. Maruya, T. Ishita and K. Homura, Effect of salt wedge intrusion in Kushiro wetland considering sea level rise, Journal of Japan Society of Civil Engineers, Ser. B1 (Hydraulic Engineering), Vol. 67, No.4, pp.1351-1356, 2011.
  34. Maruya Y., Y. Sugawara, A. Aynur, Ishida T. and K. Nakayama, Analysis of mechanism of water circulation in Kushiro wetland from comparisons with 1970, Journal of Japan Society of Civil Engineers, Ser. B1 (Hydraulic Engineering), Vol. 67, No.4, pp.547-552, 2011.
  35. Ishida T., K. Nakayama, Y. Maruya, M. Omori, Y. Sugawara, A. Abulizi and Y. Ueno, Field experiment and modeling of production of suspended sediment due to impact of rainfall and its transport, Journal of Japan Society of Civil Engineers, Ser. B1 (Hydraulic Engineering), Vol. 67, No.4, pp.1315-1320, 2011.
  36. Nakayama K., T. Kakinuma, M. Oikawa, H. Tsuji and Y. Maruya, Applicability of 3rd order theoretical solutions into internal waves, Annual Journal of Coastal Engineering, JSCE, Vol. 57, pp.1-5, 2010.
  37. Nakayama K., Y. Maruya, T. Shintani, T. Kakinuma, I. Nakauchi and M. Yonemoto, Salt wedge intrusion and stokes drift Annual Journal of Coastal Engineering, JSCE, Vol. 57, pp.326-330, 2010.
  38. Ishida T., K. Nakayama, K. Onishi, K. Natsui, M. Omori, A. Abulizi, Y. Maruya and T. Okada, Mechanism of production of suspended sediment due to snowmelt and its transport, Annual Journal of Hydraulic Engineering, JSCE, Vol. 54, pp.1393-1398, 2010.
  39. Maruya Y., K. Nakayama, D. Horimatsu, Y. Yonome and M. Yonemoto, Influence evaluation of wind stress and inflow from river on stratification in Lake Abashiri, Annual Journal of Hydraulic Engineering, JSCE, Vol. 54, pp.433-438, 2010.
  40. Nakayama K., D. Horimatsu, K. Shimizu, Y. Maruya, K. Sumiya, H. Hayakawa, T. Okada and Y. Yonome, Evaluation of wind stress effect on internal Kelvin waves in Lake Abashiri, Annual Journal of Hydraulic Engineering, JSCE, Vol. 53, pp.1285-1290, 2009.
  41. Nakayama K., D. Horimatsu, T. Kakinuma, Y. Sugawara, Y. Maruya and Y. Yonome, Applicability of a new scheme for solving flow field over sand waves, Annual Journal of Hydraulic Engineering, JSCE, Vol. 53, pp.1087-1092, 2009.
  42. Nakayama K., K. Sumiya, K. Furukawa, T. Miyazawa, Y. Yamashiki and Y. Maruya, Mechanism of internal wave breaking and mass transport due to breaking over a uniform slope, Annual Journal of Hydraulic Engineering, JSCE, Vol. 53, pp.1321-1326, 2009.