in press

1. Lo, T. L.W., Hayakawa, Y.S., Nakata, Y., Hayamizu, M., Ogura, T. (in press) Changes in morphological characteristics of drainage basins following coseismic landslides by the 2018 Hokkaido Eastern Iburi Earthquake. Geographical Studies, 98 (1). 

2024

2023

1. Hayamizu, M. and Nakata, Y. (2023.10) Accuracy assessment of post‐processing kinematic georeferencing based on uncrewed aerial vehicle‐based structures from motion multi‐view stereo photogrammetry, Geographical Research, https://doi.org/10.1111/1745-5871.12624

2. Nakata, Y., Iwasaki, K., Shimoda, S., Torita, H. (2023.10) Understanding microtopography changes in agricultural landscapes through precision assessments of digital surface models by the UAV-RTK-PPK method without ground control points, Smart Agricultural Technology, 5, 100269. https://doi.org/10.1016/j.atech.2023.100269

3. 小倉拓郎・水野敏明・片山大輔・山中大輔・佐藤祐一（2023.09）希少種の生息域に配慮した掘削事業におけるRTK-UAVを用いた掘削土砂量の推定．応用生態工学．26(2) : doi.org/10.3825/ece.22-00012

4. 山内啓之・小倉拓郎・中村洋介・宋 佳麗・小口 高（2023.08）地形教育のための空撮全天球画像を用いた教材の開発と評価．新地理．72-1, 1-11: doi.org/10.5996/newgeo.71.2_1

5. Nakata, Y., Hayamizu, Y., Ishiyama, N. (2023.08) Assessing primary vegetation recovery from earthquake-induced landslide scars: A real-time kinematic unmanned aerial vehicle approach, Ecological Engineering, 193, 107019. https://doi.org/10.1016/j.ecoleng.2023.107019

6. 矢澤優菜・小倉拓郎・原田駿介・八反地 剛・田中 靖・土志田正二（2023.07）近似円錐面を用いた土石流扇状地上の微地形の可視化．地形，44-2，61-70．

7. Faisal, B.M.R., Hayakawa, Y.S. (2023.03) Geomorphometric characterization and sediment connectivity of the middle Brahmaputra River basin. Geomorphology, 429, 108665. https://doi.org/10.1016/j.geomorph.2023.108665

8. 篠原叶実・伊藤敦哉・小倉拓郎・松岡憲知 (2023.02) 本州太平洋岸の海食凹地形における地質条件の影響. 地学雑誌. 132-1, 33-55. doi:10.5026/jgeography.132.33

2022

1. Kaihara, S., Tadakuma, N., Saito, H., Nakaya, H. (2022.10) Influence of below-threshold rainfall on landslide occurrence based on Japanese cases. Natural Hazards. https://doi.org/10.1007/s11069-022-05639-7

2. Faisal, B.M.R., Hayakawa, Y.S. (2022.07) Geomorphological processes and their connectivity in hillslope, fluvial, and coastal areas in Bangladesh: A review. Progress in Earth and Planetary Science, 9, 41. https://doi.org/10.1186/s40645-022-00500-8 

3. 堀田耕平・楠本成寿・高橋秀徳・早川裕弌 (2022.07) 立山火山地獄谷における水準測量（2015〜2021年）. 月刊地球, 44 (7), 318-324. [ Hotta, K., Kusumoto, S., Takahashi, H., Hayakawa, Y.S. (2022.07) Leveling survey in Jigokudani valley, Tateyama volcano (2015~2021). Chikyu Monthly, 44 (7), 318-324. (in Japanese) ]

4. 山内啓之・鶴岡謙一・小倉拓郎・田村裕彦・早川裕弌・飯塚浩太郎・小口　高 (2022.05) 三次元地理空間情報とVR技術を用いた遺構の散策アプリの試作と評価－地理教育への応用に向けて－．E-journal GEO, 17 (1), 169-179. https://doi.org/10.4157/ejgeo.17.169 [ Yamauchi, H., Tsuruoka, K., Ogura, T., Tamura, Y., Hayakawa, Y.S., Iizuka, K., Oguchi, T. (2022.05) Development and evaluation of an application for exploring historical sites using three-dimensional geospatial data and virtual reality technology: A contribution to geography education. E-journal GEO, 17 (1), 169-179. https://doi.org/10.4157/ejgeo.17.169 ]

5. 早川裕弌 (2022.05) キュルテペ遺跡の立地と自然地理的背景．西アジア考古学, 23, 127-135. [ Hayakawa, Y.S. (2022.05) Physical geography and environmental conditions around Kültepe. Journal of West Asian Archaeology, 23, 127-135. (in Japanese with English abstract) ]

6. Oguchi, T., Wasklewicz, T., Hayakawa, Y.S. (2022.03) Remote data in fluvial geomorphology: characteristics and applications. In: Shroder, J. (ed.) Treatise on Geomorphology (Second Edition) Volume 6.2: Fluvial Geomorphology Part II. Academic Press, Elsevier, 1116-1142. https://doi.org/10.1016/B978-0-12-818234-5.00103-6 

7. Saito, H., Uchiyama, S., Teshirogi, K. (2022.02) Rapid vegetation recovery at landslide scars detected by multitemporal high-resolution satellite imagery at Aso volcano, Japan. Geomorphology. (doi:10.1016/j.geomorph.2021.107989).

8. Hotta, K., Kusumoto, S., Takahashi, H., Hayakawa, Y.S. (2022.02) Deformation source revealed from leveling survey in Jigokudani valley, Tateyama volcano, Japan. Earth, Planets and Space, 74, 32. https://doi.org/10.1186/s40623-022-01593-7

9. Dornik, A., Drăguţ, L., Oguchi, T., Hayakawa, Y., Micu, M. (2022.02) Influence of sampling design on landslide susceptibility modeling in lithologically heterogeneous areas. Scientific Reports. 

10. 速水将人・中田康隆・蓮井 聡 (2022.02)北海道胆振東部地震で発生した崩壊斜面における植生の初期自然回復状況. 北方森林研究 70.

11. 中田康隆・速水将人・柳井清治・鳥田宏行 (2022.02) 北海道胆振東部地震で発生した崩壊地斜面における初期の表面侵食の観測．水利科学. 383.

2021

1. Iijima, Y., Abe, T., Saito, H., Ulrich, M., Fedorov, A.N., Basharin, N.I., Gorokhov, A.N., Makarov, V.S. (2021.12) Thermokarst landscape development detected by multiple spatial data in Churapcha, eastern Siberia. Frontiers in Earth Science, 1153. doi.org/10.3389/feart.2021.750298

2. 小花和宏之・早川裕弌・坂上清一 (2021.09) RTK-UAV 測量において3 次元モデルのDoming を低減する方法－GCP を使用せずにcm レベルの精度を実現する撮影・データ処理－. システム農学, 37 (2). [ Obanawa, H., Hayakawa, Y.S., Sakanoue, S. (2021.09) How to reduce doming without GCPs in RTK-UAV surveys? –Photographing and data processing that achieves cm-level accuracy–. Journal of the Japanese Agricultural Systems Society, 37 (2). ]

3. 輿水健一・石丸 聡・川上源太郎・中田康隆・高見雅三・卜部厚志 (2021.09) 地震による崩壊裸地斜面の降雨・融雪に伴う土砂動態： 高頻度UAV-SfM 測量による検討．砂防学会誌．

4. Nakata, Y., Hayamizu, M., Ishiyama, N., Torita, H. (2021.06) Observation of Diurnal Ground Surface Changes Due to Freeze-Thaw Action by Real-Time Kinematic Unmanned Aerial Vehicle. Remote Sensing, 13-11, 2167. 

5. 中田康隆・日置佳之・永松 大・小口 高 (2021.06) 鳥取県における海岸砂丘の歴史的変遷の解明－海岸砂丘植生の保全と復元を目指して－. 景観生態学 26-1.

6. 楠本成寿・高橋秀徳・東中基倫・早川裕弌 (2021.06) ブーゲー異常を用いた浅部間隙率分布の推定. 物理探査, 74, 30-35. https://doi.org/10.3124/segj.74.30 [ Kusumoto, S., Takahashi, H., Higashinaka, M., Hayakawa, Y. (2021.06) Estimation of near-surface porosity distribution using Bouguer anomaly. BUTSURI-TANSA (Geophysical Exploration), 74, 30-35. https://doi.org/10.3124/segj.74.30 (in Japanese with English abstract) ]

7. Hayamizu, M., Nakata, Y., Torita, H. (2021.05) Survival of young, dense Betula ermanii stands after wildfire at top soil removal sites.  Forestry: An International Journal of Forest Research, 1-12.

8. 水野敏明・小島永裕・東 善広・佐藤祐一・北井 剛・淺野悟史・小倉拓郎・山中大輔（2021.03）在来魚の保全に向けた水系のつながり再生に関する研究．琵琶湖環境科学研究センター研究報告書（平成29年度~令和元年度）．16, 31-54.

9. 矢作 岳・加藤 顕・加藤友規・三谷 徹(2021.02) 3次元点群データを活用した日本庭園における透かし剪定による樹木形態変化. ランドスケープ研究．

10. Tsunetaka, H., Hotta, N., Imaizumi, F., Hayakawa, Y.S., Masui, T.（2021.02） Variation in rainfall patterns triggering debris flow in the initiation zone of the Ichino-sawa torrent, Ohya landslide, Japan. Geomorphology,  375, 107529. doi:10.1016/j.geomorph.2020.107529

11. Iizuka, K., Ogura, T., Akiyama, Y., Yamauchi, H., Hashimoto, T., Yamada, Y.(2020) Improving the 3D Model Accuracy with a Post-Processing Kinematic (PPK) method for UAS surveys. Geocarto International. doi:10.1080/10106049.2021.1882004

2020

1. 田村裕彦・早川裕弌・守田正志 ・小口千明 ・緒方啓介 ・小倉拓郎（2020.12）総合的な学習の時間を活用した地理・地形教育の実践－地域文化資源を用いた小規模公立小学校への地域学習から－. 地形. 41-4, 343-362.

2. 山内啓之・小口 高・小倉拓郎（2020.12）GISを用いた地形教育のためのオープン教材の試作と評価．地形．41-4, 363-376.

3. Obanawa, H., Yoshitoshi, R., Watanabe, N., Sakanoue, S.（2020.08）Portable LiDAR-Based Method for Improvement of Grass Height Measurement Accuracy: Comparison with SfM Methods, Sensors, 20(17), 4809. doi.org/10.3390/s20174809

4. Suab, A.S., Hayakawa, Y.S., Kume, S., Yamaguchi, Y., Amanbaeva B., Kadyrov, A., Avtar, R., Ogura, T.（2020.08）Mapping of Archaeological Sites using UAV Aerial Survey and PPK GNSS Ground Survey Techniques in Central Asia, IOP Conf. Series: Earth and Environmental Science 540, 012014, DOI:10.1088/1755-1315/540/1/012014

5. 内山庄一郎・檀上 徹（2020.07）令和2年7月豪雨による熊本県人吉市および球磨村渡地区の洪水被害の特徴．防災科学技術研究所 調査速報．

6. 中田康隆・速水将人・輿水健一・竹内史郎・蝦名益仁・佐藤 創 (2020.06) RTK-UAVを用いた地形変化の観測と応用の可能性：北海道胆振東部地震で発生した森林域の崩壊跡地における検証．景観生態学．25-1.

7. Hayakawa, Y.S., Obanawa, H. (2020.06) Volumetric Change Detection in Bedrock Coastal Cliffs Using Terrestrial Laser Scanning and UAS-Based SfM. Sensors, 20(12), 3403. doi.org/10.3390/s20123403

8. Tsunetaka, H., Hotta, N., Hayakawa, Y.S., Imaizumi, F.（2020.06）Spatial Accuracy Assessment of Unmanned Aerial Vehicle-Based Structures from Motion Multi-View Stereo Photogrammetry for Geomorphic Observations in Initiation Zones of Debris Flows, Ohya Landslide, Japan. Progress in Earth and Planetary Science 2020 7:24: doi.org/10.1186/s40645-020-00336-0

9. Hayakawa, Y.S., Ogura, T., Tamura, Y., Oguchi, C.T., Shimizu, K. (2020.06) Three-dimensional point cloud data by terrestrial laser scanning for conservation of an artificial cave. In: Parise, M., Varriale, R. (eds.) Damage assessment and conservation of underground spaces as valuable resources for human activities in Italy and Japan, Opera Ipogea (Journal of Speleology in Artificial Cavities), Numero Speciale 2020, 67-74. ISSN 1970-9692

10. Tamura, Y., Oguchi, C.T., Hayakawa, Y.S., Ogata, K., Ogura, T., Morita, M. (2020.06) Multidisciplinary conservation activities and community development based on the Yokohama City registered historic site “Taya Cave”. In: Parise, M., Varriale, R. (eds.) Damage assessment and conservation of underground spaces as valuable resources for human activities in Italy and Japan, Opera Ipogea (Journal of Speleology in Artificial Cavities), Numero Speciale 2020, 75-84. ISSN 1970-9692

11. Iizuka,K., Hayakawa,Y.S., Ogura,T., Nakata,Y., Kosugi,Y., Yonehara,T. (2020.05) Integration of Multi-Sensor Data to Estimate Plot-Level Stem Volume Using Machine Learning Algorithms–Case Study of Evergreen Conifer Planted Forests in Japan, Remote Sensing, 12(10), 1649; https://doi.org/10.3390/rs12101649

12. 内山庄一郎・宮城豊彦（2020.03）70年間の画像アーカイブによる西表島仲間川マングローブ林立地域の森林動態復元．MANGROVE SCIENCE, 11, 3-15.

13. 宮城豊彦・馬場繁幸・内山庄一郎・柳沢英明・渡辺 信（2020.03）沖縄県西表島におけるマングローブ樹木の成長量と成長輪の対応．MANGROVE SCIENCE, 11, 17- 22．

14. 小花和宏之・坂上清一・八木隆徳（2020.01）積雪深計測におけるRTK-UAVの有効性．地形, 41(1) 15-26．

2019

1. 内山庄一郎・須貝 俊彦（2019.09）平成26年8月豪雨による広島市土石流災害の被害の特徴．自然災害科学   38(特別号) 57-79．

2. Goto, H., Kumahara, Y., Uchiyama, S., Iwasa, Y., Yamanaka, T., Motoyoshi, R., Takeuchi, S., Murata, S., Nakata, T.,　（2019.09）Distribution and Characteristics of Slope Movements in the Southern Part of Hiroshima Prefecture Caused by the Heavy Rain in Western Japan in July 2018．Journal of Disaster Research   14(6) 894-902

3. Sîrbu,F.,  Drăguț,L., Oguchi,T., Hayakawa, Y.S., Micu,M. (2019.06) Scaling land-surface variables for landslide detection. Progress in Earth and Planetary Science, 6, 44. https://doi.org/10.1186/s40645-019-0290-1

4. 小花和宏之・坂上清一・八木隆徳（2019.04）RTK-UAVを用いた地形計測の測位性能および省力効果．地形, 40(2) 1-10．

5. 小暮哲也・佐々木宏太・仲 優太朗・小花和宏之（2019.04）1872年浜田地震による石見畳ヶ浦の波食棚隆起可能性の検討：タフォニの分布と形成期間に基づく一考察．地形, 40(2)．

6. 早川裕弌（2019.03）3次元デジタル技術の地形学・考古学への応用．精密工学会誌, 85-3, 243-246．

7. 井上華央・柴田英昭・吉田俊也・中路達郎・小花和宏之・加藤　顕（2019.03）無人航空機による３次元データを用いた天然生針広混交林における葉の窒素含量の空間分布．森林立地, 61(1)．

2018

1. Hayakawa YS, Wasklewicz TA, Obanawa H, Kusumoto S (2018.12) Preface to the special issue “High-definition topographic and geophysical data in geosciences”. Progress in Earth and Planetary Science 5:88. doi:10.1186/s40645-018-0246-x

2. Saito, H., Iijima, Y., Basharin, N.I., Fedorov, A.N., Kunitsky, V.V. 2018. Thermokarst development detected from high-definition topographic data in central Yakutia. Remote Sensing 10, 1579 (doi:10.3390/rs10101579).

3. 内山庄一郎・鈴木比奈子・上石勲・中村一樹（2018.10）雪崩災害調査へのUAV-SfMの適用：2017年那須町雪崩災害の事例．自然災害科学，37，119-135．

4. 岩田英治・陶山健一郎・浦田信明・中浜克彦・南藤和也・新屋智崇・河岡明義・澁澤 栄・小平正和・加藤 顕・小花和宏之（2018.07）産業植林における精密林業技術の開発．紙パ技協誌，72(7) 33-38．

5. Obanawa, H., Hayakawa, Y.S. (2018.06) Variations in volumetric erosion rates of bedrock cliffs on a small inaccessible coastal island determined using measurements by an unmanned aerial vehicle with structure-from-motion and terrestrial laser scanning. Progress in Earth and Planetary Science, 5, 33. doi:10.1186/s40645-018-0191-8

6. 早川裕弌・安芸早穂子・辻 誠一郎 (2018.05) 古景観の復原における3次元景観情報を用いた地理的想像の喚起. E-journal GEO, 13 (1), 236-250. doi:10.4157/ejgeo.13.236

7. Giordan, D., Hayakawa, Y., Nex, F., Remondino, F., Tarollil, P. (2018.04) Review article: The use of Remotely Piloted Aircraft Systems (RPAS) for natural hazards monitoring and management. Natural Hazards and Earth System Sciences, 18, 1079-1096. doi:10.5194/nhess-18-1079-2018

8. Saito ,H., Uchiyama S., Hayakawa, Y.S., Obanawa H.(2018.03) Landslides triggered by an earthquake and heavy rainfalls at Aso volcano, Japan, detected by UAS and SfM-MVS photogrammetry. Progress in Earth and Planetary Science, 5:15, doi:10.1186/s40645-018-0169-6

9. Hayakawa, Y.S., Yoshida, H., Obanawa, H., Naruhashi, R., Okumura, K., Zaiki, M., Kontani, R. (2018.02) Characteristics of debris avalanche deposits inferred from source volume estimate and hummock morphology around Mt Erciyes, central Turkey. Natural Hazards and Earth System Sciences, 18, 429-444. doi:10.5194/nhess-18-429-2018

2017

1. Hayakawa, Y.S., Yoshida, H., Dragut, L., Oguchi, T. (2017.11) Automated extraction of hummocks in debris avalanche deposits using DEMs: A case study at Mt. Gassan, northwest Japan. Zeitschrift für Geomorphologie, Supplementary Issues, 61 (2), 199-212. doi:10.1127/zfg_suppl/2017/0361

2. Imaizumi, F., Hayakawa, Y.S., Hotta, N., Tsunetaka, H., Ohsaka, O., Tsuchiya, S. (2017.11) Relationship between the accumulation of sediment storage and debris-flow characteristics in a debris-flow initiation zone, Ohya landslide body, Japan. Natural Hazards and Earth System Sciences, 17, 1923-1938. doi:10.5194/nhess-17-1923-2017

3. Hayakawa, Y.S., Fujita, H., Lee, S., Sagara, T. (2017.08) Developing a data-sharing system for geospatial research: A case study on the Joint Research Assist System (JoRAS). International Journal of Spatial Data Infrastructures Research, 12, 141-160.

4. Zahra, T., Paudel, U., Hayakawa, Y.S., Oguchi, T.(2017.04) Knickzone Extraction Tool (KET) - A new ArcGIS toolset for automatic extraction of knickzones from a DEM based on multi-scale stream gradients. Open Geosciences, 9 (1), 73-88. doi:10.1515/geo-2017-0006

5. Hayakawa, Y.S., Kusumoto, S., Matta, N. (2017.02) Seismic and inter-seismic ground surface deformations of Murono mud volcano (central Japan): A laser scanning approach. Progress in Earth and Planetary Science, 4 (1), 3. doi:10.1186/s40645-016-0116-3

2016

1. 齋藤 仁・内山庄一郎・小花和宏之・早川裕弌 (2016.11) 平成 24年（2012年） 7月九州北部豪雨に伴う阿蘇火山地域での土砂生産量の推定−UAVとSfM多視点ステレオ写真測量を用いた高精細地形データの活用−. 地理学評論, 89 (6), 1-13. NAID:40021006150
   [ Saito, H., Uchiyama, S., Obanawa, H., Hayakawa, Y.S. (2016.11) Sediment yields triggered by heavy rainfall in July 2012 at Aso volcano – Application of high definition topography using UAVs and SfM-MVS photogrammetry–. Geographical Review of Japan, 89 (6), 1-13. (in Japanese with English abstract) ]

2. 早川裕弌, 小花和宏之 (2016.10) 小型無人航空機を用いたSfM多視点ステレオ写真測量による地形情報の空中計測. 物理探査.
   [ Hayakawa, Y.S., Obanawa, H. (2016.10) Aerial measurements of topography using small UAS and SfM-MVS photogrammetry. Butsuri-Tansa (Geophysical Exploration). (in Japanese with English abstract) ] 

3. Hayakawa, Y.S., Kusumoto, S., Matta, N. (2016.07) Application of terrestrial laser scanning for detection of ground surface deformation in small mud volcano (Murono, Japan). Earth, Planets and Space, 68, 114. doi:10.1186/s40623-016-0495-0

4. Hayakawa, Y.S., Imaizumi, F., Hotta, N., Tsunetaka, H. (2016.07) Towards long-lasting disaster mitigation following a mega-landslide: high-definition topographic measurements of sediment production by debris flows in a steep headwater channel. In: Meadows, M., Lin, J.-C. (eds.) Geomorphology and Society (Advances in Geographical and Environmental Sciences Series) Springer, 125-147. doi:10.1007/978-4-431-56000-5_8

5. 早川裕弌・小花和宏之・齋藤 仁・内山庄一郎 (2016.07) SfM多視点ステレオ写真測量の地形学的応用. 地形, 37 (3), 321-343.
   [ Hayakawa, Y.S., Obanawa, H., Saito, H., Uchiyama, S. (2016.07) Geomorphological applications of Structure-from-Motion Multi-View Stereo photogrammetry: A review. Transactions, Japanese Geomorphological Union, 37 (3), 321-343. (in Japanese with English abstract) ]

6. 小倉拓郎・青木賢人 (2016.07) UAVとSfM-MVSで高解像度地形情報を取得する際の運用最適化に関する検証. 地形, 37(3), 399-411. NAID:40020921416
   [ Ogura, T., Aoki, T. (2016.07) Verification of operational optimization in acquiring High-definition topographic data using UAV and SfM-MVS: Transactions, Japanese Geomorphological Union, 37(3), 399-411. (in Japanese with English abstract) ]

7. 早川裕弌・小口 高 (2016.06) 地形学における地上レーザ測量の活用. 地学雑誌, 125 (3), 299-324. doi:10.5026/jgeography.125.299
   [ Hayakawa, Y.S., Oguchi, T. (2016.06) Applications of Terrestrial Laser Scanning in Geomorphology. Journal of Geography (Chigaku Zasshi), 125 (3), 299-324. doi:10.5026/jgeography.125.299. (in Japanese with English abstract) ]

2015

1. Hayakawa, Y.S., Oguchi, C.T., Ariga, N., Aoki, H. (2015) Spatial distribution of changes in rockwall surface at Yoshimi-Hyakuana cave, central Japan, revealed by repeated terrestrial laser scanning. Procedia Earth and Planetary Science, 15, 619–626. doi:10.1016/j.proeps.2015.08.114

2. Hayakawa, Y.S., Oguchi, T., Saito, H., Kobayashi, A., Baker, V.R., Pelletier, J.D., McGuire, L.A., Komatsu, G., Goto, K. (2015) Geomorphic imprints of repeated tsunami waves in a coastal valley in northeastern Japan. Geomorphology, 242, 3–10. doi:10.1016/j.geomorph.2015.02.034

3. Gomez, C., Hayakawa, Y.S., Obanawa, H. (2015) A study of Japanese landscapes using Structure from Motion derived DSMs and DEMs based on historical aerial photographs: New opportunities for vegetation monitoring and diachronic geomorphology. Geomorphology, 242, 11–20. doi:10.1016/j.geomorph.2015.02.021

4. 小花和宏之・早川裕弌・加藤 顕・ゴメス クリストファー (2015) 小型無人航空機および単独測位GNSS搭載カメラを用いた簡易的な地形測量手法. 地形, 36 (2),87-106.  NAID: 40020476525
   [Obanawa, H., Hayakawa, Y.S., Kato, A., Gomez, C. Simplified mapping method using small UAV and GNSS equipped digital camera. Transactions, Japanese Geomorphological Union, 36(2), 87-106. (in Japanese with English abstract)]

5. 早川裕弌・小口 高・齋藤 仁・小林明才・小松吾郎・後藤和久 (2015) 三陸海岸における津波による侵食地形の特徴：地上レーザ測量による解析. 地学雑誌, [ Abstract ]
   [Hayakawa, Y.S., Oguchi, T., Saito, H., Kobayashi, A., Komatsu, G., Goto, K. (2015) Characteristics of erosional morphology by tsunami waves along the Sanriku Coast, northeastern Japan: Analysis using terrestrial laser scanning. Journal of Geography (Chigaku Zasshi)]

2014

1. 小花和宏之・早川裕弌・ゴメス クリストファー (2014) UAV空撮とSfMを用いたアクセス困難地の3Dモデリング. 地形, 35 (3), 283–294. NAID:110009833192
   [Obanawa, H., Hayakawa, Y.S., Gomez, C. (2014) 3D modelling of inaccessible areas using UAV-based aerial photography and Structure from Motion. Transactions, Japanese Geomorphological Union, 35 (3), 283–294. (in Japanese with English abstract)]

2. 小花和宏之・早川裕弌・齋藤 仁・ゴメス クリストファー (2014) UAV-SfM手法と地上レーザ測量により得られた DSM の比較. 写真測量とリモートセンシング, 53 (2), 67–74.
   [Obanawa, H., Hayakawa, Y.S., Saito, H., Gomez, C. (2014) Comparison of DSMs derived from UAV-SfM method and terrestrial laser scanning. Journal of the Japan Society of Photogrammetry and Remote Sensing, 53 (2), 67–74.]

2013

1. Hayakawa, Y.S. (2013) Stability analysis of cliff face around Kegon Falls in Nikko, eastern Japan: an implication to its erosional mechanisms. International Journal of Geosciences, 4 (6A2), 8–16. doi:10.4236/ijg.2013.46A2002 [PDF]