Proceedings of the International Association of Hydrological Sciences最新文献

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Dutch national scientific research program on land subsidence: Living on soft soils – subsidence and society 荷兰国家土地沉降科学研究计划:生活在软土上-沉降与社会
Proceedings of the International Association of Hydrological Sciences Pub Date : 2020-04-22 DOI: 10.5194/piahs-382-815-2020
E. Stouthamer, G. Erkens, K. Cohen, D. Hegger, P. Driessen, H. Weikard, M. Hefting, R. Hanssen, P. Fokker, J. van den Akker, F. Groothuijse, Marleen van Rijswick
{"title":"Dutch national scientific research program on land subsidence: Living on soft soils – subsidence and society","authors":"E. Stouthamer, G. Erkens, K. Cohen, D. Hegger, P. Driessen, H. Weikard, M. Hefting, R. Hanssen, P. Fokker, J. van den Akker, F. Groothuijse, Marleen van Rijswick","doi":"10.5194/piahs-382-815-2020","DOIUrl":"https://doi.org/10.5194/piahs-382-815-2020","url":null,"abstract":"Abstract. In the Netherlands land subsidence is a continuously ongoing\u0000process. Consequently, an increasing number of people and economic assets\u0000are exposed to subsidence, damage costs are soaring, and flood risk and\u0000greenhouse gas emissions are increasing. In some areas tipping points have\u0000already been reached, where current land-use can no longer be maintained\u0000without considerable costs, underlining the urgency to take action. Together with a consortium consisting of universities, research institutes,\u0000governmental agencies, public and private partners we have developed a\u0000national, multidisciplinary research programme aiming to develop an\u0000integrative approach to achieve feasible, legitimate and sustainable\u0000solutions for managing the negative societal effects of land subsidence,\u0000connecting fundamental research on subsidence processes to socio-economic\u0000impact of subsidence and to governance and legal framework design. The program is designed to co-create insights that help to effectively\u0000mitigate and adapt to subsidence within the Netherlands by making major\u0000improvements in measuring and modeling the processes and consequences of\u0000subsidence, identifying, developing and critically evaluating control\u0000measures and designing governance and legal approaches that facilitate their\u0000implementation. Hereto we will develop (a) new satellite-based technology to\u0000measure, attribute and monitor subsidence, (b) solid understanding of the\u0000interacting multiple processes contributing to total subsidence, (c) sophisticated physical and economic numerical models to predict\u0000human-induced subsidence rates and impacts, and (d) implementation strategies\u0000that go beyond technical measures, to strengthen governance and financing\u0000capacities as well as legal frameworks. This fully integrated approach deals\u0000with all impacts of land subsidence on society and the economy.\u0000","PeriodicalId":53381,"journal":{"name":"Proceedings of the International Association of Hydrological Sciences","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91128734","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 3
Identification of the ground movements caused by mining-induced seismicity with the satellite interferometry 用卫星干涉法识别采动地震引起的地面运动
Proceedings of the International Association of Hydrological Sciences Pub Date : 2020-04-22 DOI: 10.5194/piahs-382-297-2020
R. Hejmanowski, W. Witkowski, Artur Guzy, A. Malinowska
{"title":"Identification of the ground movements caused by mining-induced seismicity with the satellite interferometry","authors":"R. Hejmanowski, W. Witkowski, Artur Guzy, A. Malinowska","doi":"10.5194/piahs-382-297-2020","DOIUrl":"https://doi.org/10.5194/piahs-382-297-2020","url":null,"abstract":"Abstract. The assessment of the impact of mining-induced seismicity on the natural environment and infrastructure is often limited to the analysis of terrain surface vibrations. However, similar seismic phenomena, like earthquakes, may also imply dislocations and deformations of the rock mass. Such ground movements may occur in areas which are not directly under the influence of the mining. The study of the displacement field caused by mining-induced seismicity is usually carried out with the use of geodetic methods. Classical geodetic measurements provide discrete information about observed ground movements. As a result, they generally do not provide spatially and temporally relevant estimates of the total range and values of ground movements for specific periods of interest. Moreover, mining-induced seismicity causes a severe threat to buildings. That is why, regarding the\u0000complexity of the mechanism of occurrence of mining-induced seismicity and\u0000their impact on ground movements, this problem remains a substantial research issue. The presented research aimed to analyse the ground movements caused by mining-induced seismicity. The ground displacements were established based on data from Sentinel-1 satellites applying differential interferometric synthetic aperture radar (DInSAR). The results of the investigation in the copper mining area of the Lower Silesia region of Poland revealed that the observed subsidence caused by mining-induced\u0000seismicity usually has a shape of a regular ellipse. The radius of these ground movements does not exceed approximately 2–3 km from the\u0000mining-induced tremor's epicenter, and the total subsidence reaches ca. 10–20 cm. More than 50 % of the total subsidence is observed on the\u0000surface within a few days after the mining tremor occurrence. Furthermore,\u0000the deformations of the surface occur when the energy of mining-induced tremor reaches values of the order of 105 J or higher. The presented\u0000research can contribute to better identification and evaluation of the\u0000mechanism of the rock mass deformation process caused by mining-induced\u0000seismicity. In addition, the use of satellite radar interferometry improves\u0000the quality of monitoring of these dynamic phenomena significantly. The data\u0000retrieved using this method allow for quasi-continuous monitoring of the\u0000local subsidence bowls caused by mining-induced seismicity.\u0000","PeriodicalId":53381,"journal":{"name":"Proceedings of the International Association of Hydrological Sciences","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84895027","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 9
Land subsidence contribution to coastal flooding hazard in southeast Florida 地面沉降对佛罗里达东南部沿海洪水灾害的影响
Proceedings of the International Association of Hydrological Sciences Pub Date : 2020-04-22 DOI: 10.5194/piahs-382-207-2020
S. Wdowinski, T. Oliver-Cabrera, S. Fiaschi
{"title":"Land subsidence contribution to coastal flooding hazard in southeast Florida","authors":"S. Wdowinski, T. Oliver-Cabrera, S. Fiaschi","doi":"10.5194/piahs-382-207-2020","DOIUrl":"https://doi.org/10.5194/piahs-382-207-2020","url":null,"abstract":"Abstract. Over the past decade, several coastal communities in\u0000southeast Florida have experienced a significant increase in flooding\u0000frequency, which has caused significant disturbance to property, commerce,\u0000and overall quality of life. The increased flooding frequency reflects the\u0000contribution of global, regional, and local processes that affect elevation\u0000difference between coastal communities and rising sea level. In a recent\u0000project, funded by the state of Florida, we monitor coastal subsidence in\u0000southeast Florida using GPS and InSAR observations, in order to evaluate the\u0000contribution of local subsidence to the increased coastal flooding hazard.\u0000Preliminary results reveal that subsidence occurs in localized patches\u0000(< 0.02 km2) with magnitude of up to 3 mm yr−1, in urban areas\u0000built on reclaimed marshland. These results suggest that contribution of\u0000local land subsidence affect only small areas along the southeast Florida\u0000coast, but in those areas coastal flooding hazard is significantly higher\u0000compared to non-subsiding areas.\u0000","PeriodicalId":53381,"journal":{"name":"Proceedings of the International Association of Hydrological Sciences","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75595815","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 5
PREMHYCE: An operational tool for low-flow forecasting PREMHYCE:低流量预报的操作工具
Proceedings of the International Association of Hydrological Sciences Pub Date : 2020-03-23 DOI: 10.5194/egusphere-egu2020-19335
P. Nicolle, F. Besson, O. Delaigue, P. Etchevers, D. François, Matthieu Le Lay, C. Perrin, F. Rousset, D. Thiéry, François Tilmant, C. Magand, Timothée Leurent, Élise Jacob
{"title":"PREMHYCE: An operational tool for low-flow forecasting","authors":"P. Nicolle, F. Besson, O. Delaigue, P. Etchevers, D. François, Matthieu Le Lay, C. Perrin, F. Rousset, D. Thiéry, François Tilmant, C. Magand, Timothée Leurent, Élise Jacob","doi":"10.5194/egusphere-egu2020-19335","DOIUrl":"https://doi.org/10.5194/egusphere-egu2020-19335","url":null,"abstract":"Abstract. In many countries, rivers are the primary supply of\u0000water. A number of uses are concerned (drinking water, irrigation,\u0000hydropower, etc.) and they can be strongly affected by water\u0000shortages. Therefore, there is a need for the early anticipation of low-flow\u0000periods to improve water management. This is strengthened by the perspective\u0000of having more severe summer low flows in the context of climate change.\u0000Several French institutions (Inrae, BRGM, Météo-France, EDF and\u0000Lorraine University) have been collaborating over the last years to develop\u0000an operational tool for low-flow forecasting, called PREMHYCE. It was tested\u0000in real time on 70 catchments in continental France in 2017, and on 48 additional catchments in 2018. PREMHYCE includes five hydrological models:\u0000one uncalibrated physically-based model and four storage-type models of\u0000various complexity, which are calibrated on gauged catchments. The models\u0000assimilate flow observations or implement post-processing techniques.\u0000Low-flow forecasts can be issued up to 90 d ahead, based on ensemble\u0000streamflow prediction (ESP) using historical climatic data as ensembles of\u0000future input scenarios. These climatic data (precipitation, potential\u0000evapotranspiration and temperature) are provided by Météo-France\u0000with the daily gridded SAFRAN reanalysis over the 1958–2017 period, which\u0000includes a wide range of conditions. The tool provides numerical and\u0000graphical outputs, including the forecasted ranges of low flows, and the\u0000probability to be under low-flow warning thresholds provided by the users.\u0000Outputs from the different hydrological models can be combined through a\u0000simple multi-model approach to improve the robustness of forecasts. Results\u0000are illustrated for the Ill River at Didenheim (northeastern France) where\u0000the 2017 low-flow period was particularly severe and for which PREMHYCE\u0000provided useful forecasts.\u0000","PeriodicalId":53381,"journal":{"name":"Proceedings of the International Association of Hydrological Sciences","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-03-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91196778","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 4
Projections of Selenga river runoff in the XXI century and uncertainty estimates 21世纪色楞嘎河径流的预估及不确定性估计
Proceedings of the International Association of Hydrological Sciences Pub Date : 2019-08-01 DOI: 10.5194/PIAHS-381-107-2019
T. Millionshchikova
{"title":"Projections of Selenga river runoff in the XXI century and uncertainty estimates","authors":"T. Millionshchikova","doi":"10.5194/PIAHS-381-107-2019","DOIUrl":"https://doi.org/10.5194/PIAHS-381-107-2019","url":null,"abstract":"Abstract. The Selenga River, which originates in Mongolia, contributes\u0000nearly 50 % of the total inflow into Lake Baikal. Since 1996, the longest\u0000low-flow period has been observed. This paper focuses on the spatially\u0000distributed process-based modeling to assess possible runoff changes under\u0000climate projections in the XXI century using an ensemble of global climate\u0000models (GCMs) from ISI-MIP2 (Inter-Sectoral Impact Model Intercomparison\u0000Project, phase 2) and RCP-scenarios (Representative Concentration Pathway)\u0000as inputs. The ECOMAG hydrological model was applied to simulate possible\u0000runoff changes in the Selenga River basin. According to the simulations, the\u0000low-flow runoff into Lake Baikal will be continued throughout the XXI\u0000century under all the RCP-scenarios. Furthermore, as hydrological\u0000projections for the future are characterized by significant climate\u0000projections uncertainty, ANOVA (analyses of variance) test was used to\u0000quantify the sources of this uncertainty. The calculations showed that the\u0000contribution of the model uncertainty (differences between GCMs) is much\u0000higher than the contribution of the scenario uncertainty (variability of\u0000RCP-scenarios) although it increases at the end of the century.\u0000","PeriodicalId":53381,"journal":{"name":"Proceedings of the International Association of Hydrological Sciences","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77301147","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
Reconstruction of long-term dynamics of Chernobyl-derived 137Cs in the Upa River using bottom sediments in the Scheckino reservoir and semi-empirical modelling 利用Scheckino水库底部沉积物和半经验模型重建Upa河切尔诺贝利137Cs的长期动态
Proceedings of the International Association of Hydrological Sciences Pub Date : 2019-08-01 DOI: 10.5194/PIAHS-381-95-2019
A. Konoplev, M. Ivanov, V. Golosov, E. Konstantinov
{"title":"Reconstruction of long-term dynamics of Chernobyl-derived 137Cs in the Upa River using bottom sediments in the Scheckino reservoir and semi-empirical modelling","authors":"A. Konoplev, M. Ivanov, V. Golosov, E. Konstantinov","doi":"10.5194/PIAHS-381-95-2019","DOIUrl":"https://doi.org/10.5194/PIAHS-381-95-2019","url":null,"abstract":"Abstract. Two cores of bottom sediments were collected in 2018 to a depth of ∼200 cm in the deepest part of the Scheckino reservoir on the Upa River (9500 km2), Tula region, Russia. This area was severely contaminated by radiocesium (r-Cs) after the Chernobyl accident in 1986. The fact that 137Cs activity concentrations in a specific horizon of the bottom sediments correspond to 137Cs concentrations associated with suspended matter delivered to the reservoir, provides a basis for constructing the dynamics of particulate 137Cs activity concentrations in the Upa River catchment from 1986 to 2017. Over the time since the Chernobyl accident, the particulate 137Cs concentrations have decreased by more than an order of magnitude, with only minor changes occurring during the last 15 years. Using a typical value for the distribution coefficient Kd for the rivers of the Chernobyl contamination zone, dissolved 137Cs activity concentrations in the Upa River have been estimated and their changes over the past 30 years since the accident have been studied. The resulting estimates of dissolved 137Cs concentrations in the Upa River have been found to be in good agreement with measured data over the period 1987–1991. The proposed and tested method provides a basis for reconstructing the long-term dependence of radionuclide concentrations in rivers and reservoirs based on their vertical distribution in bottom sediments. Reconstructed time dependencies of particulate and dissolved 137Cs activity concentrations in the Upa River were found to be described well by the proposed semi-empirical “diffusion” model based on an assumption that the time dependency of particulate r-Cs in the river corresponds to the time dependency of its concentration in top soil layers across the catchment which can be approximated by a dispersion-convection equation with physically meaningful parameters.\u0000","PeriodicalId":53381,"journal":{"name":"Proceedings of the International Association of Hydrological Sciences","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73427837","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 9
Lake sedimentation as an agent of postglacial transformation of interfluves and fluvial landscapes of the Borisoglebsk Upland, Central European Russia 俄罗斯中欧Borisoglebsk高地冰川后河间带和河流景观转变的湖泊沉积
Proceedings of the International Association of Hydrological Sciences Pub Date : 2019-08-01 DOI: 10.5194/PIAHS-381-13-2019
E. Garankina, V. Belyaev, I. Shorkunov, Yuliya V. Shishkina, P. Andreev, E. Sheremetskaya
{"title":"Lake sedimentation as an agent of postglacial transformation of interfluves and fluvial landscapes of the Borisoglebsk Upland, Central European Russia","authors":"E. Garankina, V. Belyaev, I. Shorkunov, Yuliya V. Shishkina, P. Andreev, E. Sheremetskaya","doi":"10.5194/PIAHS-381-13-2019","DOIUrl":"https://doi.org/10.5194/PIAHS-381-13-2019","url":null,"abstract":"Abstract. Borisoglebsk Upland is considered an example of a\u0000secondary upland plain in the marginal zone of the last Middle Pleistocene\u0000glaciation. Moraine hills and kames were reworked by glaciofluvial processes\u0000and incised by small fluvial forms later. Its postglacial surface drift\u0000cover is regularly defined as an undivided complex of mantle loams of\u0000dominantly subaerial origin with characteristic cryogenic features and\u0000remnants of paleosols. However, some previous studies suggest that lake\u0000sedimentation played an important role in the postglacial history of the\u0000Borisoglebsk Upland. This paper presents results of a detailed investigation\u0000of postglacial sedimentary cover of the eastern part of the Borisoglebsk\u0000Upland aimed to reconstruct the co-evolution of surface deposits, soil cover\u0000and geomorphic landscapes since degradation of the last Middle Pleistocene\u0000glaciation about 150 ka (MIS-6). The study is essentially based on a\u0000comprehensive lithological, pedological and geocryological description of\u0000postglacial deposits in cores (hand or machine-driven) and open sections,\u0000systematic sampling for grain size analysis and selective sampling for\u000014C absolute dating and monoliths structural examination. The results\u0000indicate that most of the surface drifts in this feature consists of\u0000stratified lacustrine deposits. Their Late Pleistocene age is\u0000stratigraphically confined by the underlying paleosols and incorporated\u0000peats of the Mikulino interglacial age (MIS-5) and several organic-rich\u0000layers within the lake sequence 14C dated to the Middle Valdai\u0000interstadial (MIS-3). Overlying mantle loams and colluvial deposits with\u0000cryogenic features and low organic matter content those facially substitute\u0000lacustrine sediments were attributed to the Late Valdai stadial (MIS-2).\u0000After the Mid-Holocene stabilization, relatively thin colluvial cover\u0000identified by the increased amount of organic matter also deposited. We\u0000conclude that lacustrine sedimentation is the primary Late Pleistocene agent\u0000that transformed the initial glacial topography and most characteristic type\u0000of lithodynamics of the eastern Borisoglebsk Upland.\u0000","PeriodicalId":53381,"journal":{"name":"Proceedings of the International Association of Hydrological Sciences","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72412918","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Scientometric analysis of the activities of the International Commission for Continental Erosion (ICCE) 国际大陆侵蚀委员会(ICCE)活动的科学计量分析
Proceedings of the International Association of Hydrological Sciences Pub Date : 2019-08-01 DOI: 10.5194/PIAHS-381-3-2019
V. Bondarev
{"title":"Scientometric analysis of the activities of the International Commission for Continental Erosion (ICCE)","authors":"V. Bondarev","doi":"10.5194/PIAHS-381-3-2019","DOIUrl":"https://doi.org/10.5194/PIAHS-381-3-2019","url":null,"abstract":"Abstract. The article is dedicated to the analysis of the\u0000International Commission of Continental Erosion (ICCE) of International\u0000Association of Hydrological Sciences (IAHS) activity since foundation in\u00001981. The empirical data is the collections of scientific articles,\u0000published in IAHS Red Books after symposiums and workshops, organized by the\u0000ICCE. 2460 authors published articles in Red Books, 81 % of them have\u0000publication in the one issue. The most active contributors (who have\u0000articles in 7 or more issues) compose a group of 39 scientists (1.6 % from\u0000the total number of authors). Researchers from 89 countries were published\u0000articles in the ICCE issues of Red Books. The activity of the ICCE can be\u0000described by a cyclic model of growth. It is shown that the ICCE scientific\u0000community is becoming progressively global.\u0000","PeriodicalId":53381,"journal":{"name":"Proceedings of the International Association of Hydrological Sciences","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78897321","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Quantifying channel bank erosion of a small mountain river in Russian wet subtropics using erosion pins 利用侵蚀销钉量化俄罗斯湿润亚热带山区一条小河流的河道河岸侵蚀
Proceedings of the International Association of Hydrological Sciences Pub Date : 2019-08-01 DOI: 10.5194/PIAHS-381-79-2019
Yulia Kuznetsova, V. Golosov, A. Tsyplenkov, N. Ivanova
{"title":"Quantifying channel bank erosion of a small mountain river in Russian wet subtropics using erosion pins","authors":"Yulia Kuznetsova, V. Golosov, A. Tsyplenkov, N. Ivanova","doi":"10.5194/PIAHS-381-79-2019","DOIUrl":"https://doi.org/10.5194/PIAHS-381-79-2019","url":null,"abstract":"Abstract. Channel bank erosion was monitored using erosion pin\u0000arrays in a small mountain stream located in the Tsanyk River basin near the\u0000Caucasian Black sea coast. The study area is characterized by high\u0000precipitation, low mountainous topography, and flysch bedrock. Erosion pins\u0000arrays were installed at six key sections each with different bank lithology\u0000and morphology. Bank lithology (bedrock or alluvial deposits), morphology\u0000(vertical or concave) and orientation towards the local flow direction were\u0000the dominant factors controlling the rate of bank retreat and/or collapse.\u0000In contrast to alluvial banks, bedrock slopes are predominantly affected by\u0000chemical weathering processes in a wet subtropical climate. Results on\u0000sediment mobilization and volume removed are presented for different bank\u0000types. Variability in channel bank recessional dynamics is discussed in the\u0000context of hydrometeorological data (2016–2018) and an extreme flood.\u0000","PeriodicalId":53381,"journal":{"name":"Proceedings of the International Association of Hydrological Sciences","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90849112","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Time changes of dose equivalent rate above the soil surface as indication of natural attenuation processes 地表以上剂量当量率随时间变化的自然衰减过程
Proceedings of the International Association of Hydrological Sciences Pub Date : 2019-08-01 DOI: 10.5194/PIAHS-381-121-2019
A. Konoplev, T. Yoshihara, Y. Wakiyama
{"title":"Time changes of dose equivalent rate above the soil surface as indication of natural attenuation processes","authors":"A. Konoplev, T. Yoshihara, Y. Wakiyama","doi":"10.5194/PIAHS-381-121-2019","DOIUrl":"https://doi.org/10.5194/PIAHS-381-121-2019","url":null,"abstract":"Abstract. Eight sites in the Fukushima contaminated area were\u0000surveyed for long-term changes in D-shuttle dose equivalent rate above the\u0000soil surface during 2015–2017. D-shuttle readings in most cases decreased\u0000faster than if due to radioactive decay only. More rapid decrease can be\u0000explained by natural attenuation processes, such as erosion of the topsoil,\u0000the vertical migration of radionuclides in the soil and the deposition of\u0000cleaner sediments transported by surface runoff. According to the time\u0000dependencies of D-shuttle dose rate readings integral rate constants of the\u0000natural attenuation were estimated using the exponential trend-line.\u0000Estimated rate constants of natural attenuation ranged from 7.3×10-3 to 0.48 yr−1, while the correspondent a\u0000half-dose rate decrease was 1.4–95 years.\u0000","PeriodicalId":53381,"journal":{"name":"Proceedings of the International Association of Hydrological Sciences","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76641756","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
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