| フルテキストURL | fulltext.pdf |
|---|---|
| 著者 | Yengeh, Rohdof Lactem| Somura, Hiroaki| Moroizumi, Toshitsugu| Mori, Yasushi| Maeda, Morihiro| |
| キーワード | dissolved iron seasonal variation dissolved organic matter fulvic acid iron |
| 発行日 | 2025 |
| 出版物タイトル | Hydrological Research Letters |
| 巻 | 19巻 |
| 号 | 1号 |
| 出版者 | Japan Society of Hydrology and Water Resources |
| 開始ページ | 36 |
| 終了ページ | 43 |
| ISSN | 1882-3416 |
| 資料タイプ | 学術雑誌論文 |
| 言語 | 英語 |
| OAI-PMH Set | 岡山大学 |
| 著作権者 | © The Author(s) 2025. |
| 論文のバージョン | publisher |
| DOI | 10.3178/hrl.24-00012 |
| Web of Science KeyUT | 001439689300001 |
| 関連URL | isVersionOf https://doi.org/10.3178/hrl.24-00012 |
| フルテキストURL | fulltext.pdf |
|---|---|
| 著者 | Zahir, Aliya Mhd| Somura, Hiroaki| Moroizumi, Toshitsugu| |
| キーワード | Water management Remote sensing Irrigation performance Irrigation system Earth observation data Muda Irrigation Scheme |
| 発行日 | 2024-12 |
| 出版物タイトル | Agricultural Water Management |
| 巻 | 306巻 |
| 出版者 | Elsevier BV |
| 開始ページ | 109175 |
| ISSN | 0378-3774 |
| NCID | AA00516315 |
| 資料タイプ | 学術雑誌論文 |
| 言語 | 英語 |
| OAI-PMH Set | 岡山大学 |
| 著作権者 | © 2024 The Author(s). |
| 論文のバージョン | publisher |
| DOI | 10.1016/j.agwat.2024.109175 |
| Web of Science KeyUT | 001363626800001 |
| 関連URL | isVersionOf https://doi.org/10.1016/j.agwat.2024.109175 |
| フルテキストURL | fulltext.pdf |
|---|---|
| 著者 | Ngoc Quynh Tram, Vo| Somura, Hiroaki| Moroizumi, Toshitsugu| |
| キーワード | hydrological modeling drought indices drought features watershed scale assessment agricultural activities mountainous region |
| 発行日 | 2021 |
| 出版物タイトル | Hydrological Research Letters |
| 巻 | 15巻 |
| 号 | 3号 |
| 出版者 | Japan Society of Hydrology and Water Resources |
| 開始ページ | 77 |
| 終了ページ | 83 |
| ISSN | 1882-3416 |
| 資料タイプ | 学術雑誌論文 |
| 言語 | 英語 |
| OAI-PMH Set | 岡山大学 |
| 著作権者 | © The Author(s) 2021. |
| 論文のバージョン | publisher |
| DOI | 10.3178/hrl.15.77 |
| 関連URL | isVersionOf https://doi.org/10.3178/hrl.15.77 |
| フルテキストURL | fulltext.pdf |
|---|---|
| 著者 | Mwendwa Wambua, Daniel| Somura, Hiroaki| Moroizumi, Toshitsugu| |
| キーワード | climate change adaptation scenarios downscaling disaggregation temporal |
| 発行日 | 2024 |
| 出版物タイトル | Hydrological Research Letters |
| 巻 | 18巻 |
| 号 | 4号 |
| 出版者 | Japan Society of Hydrology and Water Resources |
| 開始ページ | 87 |
| 終了ページ | 94 |
| ISSN | 1882-3416 |
| 資料タイプ | 学術雑誌論文 |
| 言語 | 英語 |
| OAI-PMH Set | 岡山大学 |
| 著作権者 | © The Author(s) 2024. |
| 論文のバージョン | publisher |
| DOI | 10.3178/hrl.18.87 |
| Web of Science KeyUT | 001333204000001 |
| 関連URL | isVersionOf https://doi.org/10.3178/hrl.18.87 |
| フルテキストURL | fulltext.pdf |
|---|---|
| 著者 | Zahir, Aliya Mhd| Somura, Hiroaki| Moroizumi, Toshitsugu| |
| キーワード | Google Earth Engine agricultural practices irrigation remote sensing Sentinel-1 |
| 発行日 | 2024 |
| 出版物タイトル | Hydrological Research Letters |
| 巻 | 18巻 |
| 号 | 1号 |
| 出版者 | Japan Society of Hydrology and Water Resources (JSHWR) / Japanese Association of Groundwater Hydrology (JAGH) / Japanese Association of Hydrological Sciences (JAHS) / Japanese Society of Physical Hydrology (JSPH) |
| 開始ページ | 14 |
| 終了ページ | 21 |
| ISSN | 1882-3416 |
| 資料タイプ | 学術雑誌論文 |
| 言語 | 英語 |
| OAI-PMH Set | 岡山大学 |
| 著作権者 | © The Author(s) 2024. |
| 論文のバージョン | publisher |
| DOI | 10.3178/hrl.18.14 |
| Web of Science KeyUT | 001167965700001 |
| 関連URL | isVersionOf https://doi.org/10.3178/hrl.18.14 |
| フルテキストURL | fulltext.pdf |
|---|---|
| 著者 | Tram, Vo Ngoc Quynh| Somura, Hiroaki| Moroizumi, Toshitsugu| Maeda, Morihiro| |
| キーワード | Land-use policies Land-use changes Agricultural practices Water resources management Hilly areas |
| 発行日 | 2022-12 |
| 出版物タイトル | Journal Of Hydrology-Regional Studies |
| 巻 | 44巻 |
| 出版者 | Elsevier |
| 開始ページ | 101225 |
| ISSN | 2214-5818 |
| 資料タイプ | 学術雑誌論文 |
| 言語 | 英語 |
| OAI-PMH Set | 岡山大学 |
| 著作権者 | © 2022 The Author(s). |
| 論文のバージョン | publisher |
| DOI | 10.1016/j.ejrh.2022.101225 |
| Web of Science KeyUT | 000873972800001 |
| 関連URL | isVersionOf https://doi.org/10.1016/j.ejrh.2022.101225 |
| フルテキストURL | fulltext.pdf |
|---|---|
| 著者 | Tram, Vo Ngoc Quynh| Somura, Hiroaki| Moroizumi, Toshitsugu| |
| キーワード | land-use conversion afforestation deforestation agricultural expansion urbanization mountainous areas watershed modeling |
| 発行日 | 2021-02-27 |
| 出版物タイトル | WATER |
| 巻 | 13巻 |
| 号 | 5号 |
| 出版者 | MDPI |
| 開始ページ | 627 |
| ISSN | 2073-4441 |
| 資料タイプ | 学術雑誌論文 |
| 言語 | 英語 |
| OAI-PMH Set | 岡山大学 |
| 著作権者 | © 2021 by the authors. |
| 論文のバージョン | publisher |
| NAID | 120007019118 |
| DOI | 10.3390/w13050627 |
| Web of Science KeyUT | 000628578800001 |
| 関連URL | isVersionOf https://doi.org/10.3390/w13050627 |
| タイトル（別表記） | Mitigation Effect of Thermal Environment on the Asphalt by Sprayed Water |
|---|---|
| フルテキストURL | fest_026_007_010.pdf |
| 著者 | 諸泉 利嗣| 伊藤 尚也| 三浦 健志| |
| 抄録 | In this study, water was sprinkled on the asphalt surface during the hottest hours of the day using a sprinkler, and the effect was experimentally verified. An air temperature, a humidity, a ground surface temperature, and a globe temperature which is radiant heat from the ground were measured, and using these measurements, WBGT (Wet-Bulb Globe Temperature), which is an index of thermal stress on the human body, was calculated. In this way, we investigated not only the climate mitigation effect but also the mitigation effect of the thermal environment felt by the human body. As a result, the following points were clarified in this study: 1) During sprinkling, the air temperature, the black globe temperature, and the WBGT were lower in the sprinkled area than in the controlled area, and the wet-bulb temperature hardly changed. 2) Focusing on the amount of change after watering compared to before watering, the air temperature, the globe temperature, and the WBGT decreased, and the wet-bulb temperature hardly changed. 3) In the sprinkled area, when the WBGT value just before watering is higher than that of the strict caution (WBGT is 28°C or higher), it drops to a level one rank lower, and when the WBGT value just before watering is warning (WBGT value is 25°C or higher), it was almost no change. |
| キーワード | WBGT Air temperature Globe Temperature Thermal environment Sprayed water |
| 出版物タイトル | 岡山大学環境理工学部研究報告 |
| 発行日 | 2021-03 |
| 巻 | 26巻 |
| 号 | 1号 |
| 開始ページ | 7 |
| 終了ページ | 10 |
| ISSN | 13419099 |
| 言語 | 日本語 |
| 論文のバージョン | publisher |
| タイトル（別表記） | Estimation of actual evapotranspiration in 3 river basins in Okayama prefecture - Comparison of Morton method and modified Brutsaert & Stricker method - |
|---|---|
| フルテキストURL | fest_026_001_005.pdf |
| 著者 | 諸泉 利嗣| 三浦 健志| |
| 抄録 | In the study, the actual evaporation was estimated in the Asahi River, the Takahashi River, and the Yoshii River basins in Okayama prefecture for four years from January 1999 to December 2002. The Morton method and the modified Brutsaert and Stricker (B & S) method were applied to the three river basins to estimate the actual evapotranspiration and compare the two methods. As a result, the actual evapotranspiration by the Morton method was all almost equal to that by the Penman’s potential evapotranspiration, and the evapotranspiration was overestimated rather than the actual evapotranspiration. The actual evapotranspiration by the modified B & S method was below the Penman’s potential evapotranspiration throughout the year, and the total annual amount was about 80% of the potential evapotranspiration. In addition, the modified B & S method showed the general tendency that the actual evapotranspiration was lower in urban area than in the hilly and mountainous areas. |
| キーワード | Complementary relationship Actual evapotranspiration Potential evapotranspiration |
| 出版物タイトル | 岡山大学環境理工学部研究報告 |
| 発行日 | 2021-03 |
| 巻 | 26巻 |
| 号 | 1号 |
| 開始ページ | 1 |
| 終了ページ | 5 |
| ISSN | 13419099 |
| 言語 | 日本語 |
| 論文のバージョン | publisher |
| JaLCDOI | 10.18926/fest/54862 |
|---|---|
| タイトル（別表記） | Method for predicting minimum air temperature in the next morning using local meteorological observation data - Improvement on minimum air temperature forecasting system utilizing the Internet - |
| フルテキストURL | fest_022_055_059.pdf |
| 著者 | 上田 悠生| 三島 拓也| 三浦 健志| 諸泉 利嗣| |
| 抄録 | We have developed a minimum air temperature forecasting system using local meteorological observation data in order to prevent or mitigate the frost damage. In this paper, the correlation between the meteorological factors and the decrease in air temperature during the night was shown. Then minimum air temperature was predicted by the multiple regression equation that uses air temperature and humidity at 18:00 as explanatory variables. As the result, the root mean square error (RMSE) was 2.8°C. When the difference of air temperature between 17:00 and 18:00 was used for the prediction instead of humidity, the RMSE was 3.5°C. Next, the prediction was carried out only in clear nights, then the equation that use air temperature and humidity at 18:00 showed that the RMSE was 1.3°C. Although the predictive accuracy of the equations for clear nights is low on cloudy or rainy nights, we can forecast safely on frosty nights by using those equations in combination with the equations for all nights. |
| キーワード | Minimum air temperature prediction frost damage IT multiple regression analysis |
| 出版物タイトル | 岡山大学環境理工学部研究報告 |
| 発行日 | 2017-03 |
| 巻 | 22巻 |
| 号 | 1号 |
| 開始ページ | 55 |
| 終了ページ | 59 |
| ISSN | 2187-6940 |
| 言語 | 日本語 |
| 論文のバージョン | publisher |
| NAID | 120005997443 |
| JaLCDOI | 10.18926/fest/53219 |
|---|---|
| タイトル（別表記） | Building of minimum air temperature forecast system using the Internet -Design of the forecast website- |
| フルテキストURL | fest_020_035_040.pdf |
| 著者 | 三島 拓也| 三浦 健志| 諸泉 利嗣| |
| 抄録 | The purpose of this study is to build a forecast system for predicting at minimum air temperature in the next morning from the meteorological data, such as air temperature, humidity, and the amount of solar radiation, in a field in the evening on the previous day. The meteorological data are sent to a relay server, and then, transferred to a PC in our laboratory of Okayama University by executing the computer program to import the data which are used to calculate the predicted values of minimum air temperature. The predicted minimum air temperatures are released for the farmers on the website in the server of Okayama University. The website is also created by our laboratory. As a result, the predicted minimum air temperatures agreed with the measured ones. |
| キーワード | Minimum air temperature prediction internet frozen disaster |
| 出版物タイトル | 岡山大学環境理工学部研究報告 |
| 発行日 | 2015-03 |
| 巻 | 20巻 |
| 号 | 1号 |
| 開始ページ | 35 |
| 終了ページ | 40 |
| ISSN | 2187-6940 |
| 言語 | 日本語 |
| 論文のバージョン | publisher |
| NAID | 120005572534 |
| 著者 | MOROIZUMI, Toshitsugu| ITO, Naoya| KOSKIAHO, Jari| TATTARI, Sirkka| |
|---|---|
| 発行日 | 2014-06 |
| 出版物タイトル | SYKE-OU Project Report |
| 資料タイプ | 研究報告書 |
| JaLCDOI | 10.18926/fest/44792 |
|---|---|
| タイトル（別表記） | Improvement of complementary relationship-based evapotranspiration model |
| フルテキストURL | fest_016_035_039.pdf |
| 著者 | 中道 丈史| 諸泉 利嗣| 三浦 健志| |
| 抄録 | Advection-Aridity(AA) model can calculate actual evapotranspiration by using only meteorological data. However, comparing the model with Penman equation showed that AA model doesn’t properly evaluate evapotranspiration from urban moisture area. In urban area, Actual evaporation from water calculated by AA model(E) are much less than that by Penman equation(Epo). Multiple regression analysis using estimation results indicates that the difference between the models is due to the difference of the sensitivity to vapor pressure deficit between the models. To improve this problem, modification coefficient k, defined as k=a･albedo+b, is suggested. Regression coefficients a, b are determined as satisfying k=Epo/E for water and k=1 for urban surface. By using this coefficient k, evaporation from water is nearly equal to value estimated by Penman equation, while evaporation from urban surface is changeless. |
| キーワード | Complementary relationship Actual evapotranspiration Potential evapotranspiration Water budget |
| 出版物タイトル | 岡山大学環境理工学部研究報告 |
| 発行日 | 2011-03-18 |
| 巻 | 16巻 |
| 号 | 1号 |
| 開始ページ | 35 |
| 終了ページ | 39 |
| ISSN | 2185-3347 |
| 言語 | 日本語 |
| 論文のバージョン | publisher |
| NAID | 120002949472 |
| 著者 | 諸泉 利嗣| 楠山 倫世| 三浦 健志| |
|---|---|
| 発行日 | 2009-12 |
| 出版物タイトル | 環境制御 |
| 巻 | 31巻 |
| 資料タイプ | 紀要論文 |
| 著者 | 諸泉 利嗣| |
|---|---|
| 発行日 | 2006-12 |
| 出版物タイトル | 環境制御 |
| 巻 | 28巻 |
| 資料タイプ | その他 |
| 著者 | 諸泉 利嗣| 佐々木 裕美| 三浦 健志| |
|---|---|
| 発行日 | 2008-12 |
| 出版物タイトル | 環境制御 |
| 巻 | 30巻 |
| 資料タイプ | 学術雑誌論文 |
| 著者 | 吉崎 文人| 黒田 訓宏| 三浦 健志| 諸泉 利嗣| |
|---|---|
| 発行日 | 2004-07-01 |
| 出版物タイトル | 岡山大学農学部センター報告 |
| 巻 | 26巻 |
| 資料タイプ | 紀要論文 |
| JaLCDOI | 10.18926/fest/11537 |
|---|---|
| タイトル（別表記） | Long-term Change Trend of Climate at Aomori City |
| フルテキストURL | 006_081_084.pdf |
| 著者 | 諸泉 利嗣| 佐藤 裕一| 佐藤 幸一| 三浦 健志| |
| 抄録 | Characteristics of long-term change for air temperature, precipitation and snowfall-depth at Aomori city were analyzed with data during the 111 years, from 1886 to 1996. The typical results were as follows: (1) The increasing rate of the annual mean air temperature was 1.07℃/111 year. (2) The increasing rate of the monthly minimum air temperature was larger than that of the monthly maximum air temperature. (3) The increasing rate of the monthly air temperature was large from winter to spring, however, was not so from summer to autumn. (4) The decreasing rate of annual precipitation was 0.187 mm/year. (5) The 5-year moving average of annual snowfall-depth might indicate the existence of about 10-year period. |
| キーワード | Air temperature precipitation snowfall-depth long-term change Aomori city |
| 出版物タイトル | 岡山大学環境理工学部研究報告 |
| 発行日 | 2001-02-28 |
| 巻 | 6巻 |
| 号 | 1号 |
| 開始ページ | 81 |
| 終了ページ | 84 |
| ISSN | 1341-9099 |
| 言語 | 日本語 |
| 論文のバージョン | publisher |
| NAID | 120002313378 |
| JaLCDOI | 10.18926/fest/11536 |
|---|---|
| タイトル（別表記） | Long-term Trend of Rainfall at Tsudaka Farm of Okayama University |
| フルテキストURL | 007_107_111.pdf |
| 著者 | 諸泉 利嗣| 四方田 穆| 三浦 健志| |
| 抄録 | Characteristics of long-term change in rainfall at Tsudaka Farm of Okayama University were analyzed with data during the 20 years, from 1979 to 1998. The typical results were as follows: (1) The average of annual rainfall was 1203 mm at average, 1726 mm at maximum, and 666 mm at minimum. (2) The decreasing rate of the annual rainfall was 5.37 mm/year. (3) Trend of rainfall intensity in each rainfall duration showed an increase of which rate were 0.005~0.256 mm/h/year, contrary to the annual trend. (4) Rainfall intensities in n-years probability were estimated using the maximum rainfall intensity for each rainfall duration. |
| キーワード | Rainfall Rainfall intensity Rainfall duration Talbot formula Long-term trend Tsudaka Farm of Okayama University |
| 出版物タイトル | 岡山大学環境理工学部研究報告 |
| 発行日 | 2002-03-22 |
| 巻 | 7巻 |
| 号 | 1号 |
| 開始ページ | 107 |
| 終了ページ | 111 |
| ISSN | 1341-9099 |
| 言語 | 日本語 |
| 論文のバージョン | publisher |
| NAID | 120002313813 |
| JaLCDOI | 10.18926/fest/11507 |
|---|---|
| タイトル（別表記） | Survey on Spatial Variability of Surface Soil Moisture and Soil Physical Properties in a Sloping Grassland Field |
| フルテキストURL | 008_081_085.pdf |
| 著者 | 諸泉 利嗣| |
| 抄録 | Spatial variability of surface soil moisture, bulk density, satureted hydraulic conductivity, and penetration resistance (cone index) in a sloping grassland field were surveyed. The typical results were as follows: (1) The surface soil moisture and the bulk density were normally distributed at a significant level of 0.05. (2) The surface soil moistures were higher at low area than in high and slope area. The coefficients of variation were larger at slope area. (3) The coefficients of variation for bulk density were larger at slope area than in low area. (4) The distribution of saturated hydraulic conductivity can be considered to be log-normally distributed. (5) The cone index showed the normal distribution. |
| キーワード | Spatial variability Surface soil moisture Bulk density Saturated hydraulic conductivity Cone index |
| 出版物タイトル | 岡山大学環境理工学部研究報告 |
| 発行日 | 2003-03 |
| 巻 | 8巻 |
| 号 | 1号 |
| 開始ページ | 81 |
| 終了ページ | 85 |
| ISSN | 1341-9099 |
| 言語 | 日本語 |
| 論文のバージョン | publisher |
| NAID | 120002313346 |