Proceedings of the International Association of Hydrological Sciences最新文献

{"title":"Predicting land deformation by integrating InSAR data and cone penetration testing through machine learning techniques","authors":"Melika Sajadian, Ana Teixeira, F. S. Tehrani, M. Lemmens","doi":"10.5194/piahs-382-525-2020","DOIUrl":"https://doi.org/10.5194/piahs-382-525-2020","url":null,"abstract":"Abstract. Built environments developed on compressible soils are susceptible to land deformation. The spatio-temporal monitoring and analysis of these deformations are necessary for sustainable development of cities. Techniques such as Interferometric Synthetic Aperture Radar (InSAR) or predictions based on soil mechanics using in situ characterization, such as Cone Penetration Testing (CPT) can be used for assessing such land deformations. Despite the combined advantages of these two methods, the relationship between them has not yet been investigated. Therefore, the major objective of this study is to reconcile InSAR measurements and CPT measurements using machine learning techniques in an attempt to better predict land deformation.\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":"72376814","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}

{"title":"Use of displacement as a proxy for dike safety","authors":"E. Jamalinia, P. Vardon, S. Steele‐Dunne","doi":"10.5194/piahs-382-481-2020","DOIUrl":"https://doi.org/10.5194/piahs-382-481-2020","url":null,"abstract":"Abstract. Climatic conditions and vegetation cover influence water flux in a slope which affect the pore water pressure and self weight, hence its stability. High evapotranspiration and low precipitation rates during summer cause dry soil with low soil moisture (SM) that leads to soil shrinkage, which leads to\u0000cracking and reduced shear strength, which consequently decreases the stability of slopes. Soil re-wetting increases slope weight and exerts an additional driving force on the slope.\u0000Using Earth observation (EO) data facilitates frequent, large-scale monitoring to identify the vulnerable areas along the slopes to avoid instability.\u0000Here we study the displacement of a vegetated dike subject to SM variations under varying climatic conditions.\u0000Results show that the SM and magnitude of total displacement at a desired location are highly positively correlated without time lag.\u0000This proof-of-concept study shows that near surface displacement due to interaction with the atmosphere has a strong relation with the water availability in the slope and therefore the Factor of Safety (FoS).\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":"75372699","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}

{"title":"Systematic assessment of damage to buildings due to groundwater lowering-induced subsidence: methodology for large scale application in the Netherlands","authors":"Ana L. Costa, S. Kok, M. Korff","doi":"10.5194/piahs-382-577-2020","DOIUrl":"https://doi.org/10.5194/piahs-382-577-2020","url":null,"abstract":"Abstract. In the Netherlands, subsidence of peat and clay soils due\u0000to (artificial) lowering of the groundwater table and loading of soft soils\u0000is commonplace, causing extensive damage to exposed and vulnerable assets.\u0000Awareness of subsidence-related damage to buildings has recently increased\u0000in the Netherlands, particularly after reported damages due to the 2018\u0000extremely long dry period. However, despite this being a major concern to\u0000homeowners and public authorities, an integrated and systematic risk\u0000assessment on regional or national scale is currently lacking which inhibits\u0000concrete and meaningful action. In this paper, we propose a methodology for\u0000the systematic regional or countrywide assessment of two subsidence-related\u0000damage mechanisms to buildings: differential settlement of buildings on\u0000shallow foundation, and timber pile degradation due to low groundwater\u0000levels. The methodology is set up in a modular, systematic way – initially\u0000based on expert judgement and validation with available local detailed\u0000information and allows for future improvements. Progress in individual\u0000contributing factors to damages can be seamlessly integrated for the\u0000systematic improvement of damage estimates. This approach can be replicated\u0000for other damage mechanisms and detailed to provide a more local risk\u0000assessment. We expect results to be a valuable input for public or private\u0000decision making, e.g. in awareness raising and evaluating interventions.\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":"84895665","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}

{"title":"Integrated monitoring of subsidence due to hydrocarbon production: consolidating the foundation","authors":"G. Ketelaar, H. Bähr, Shizhuo Liu, H. Piening, W. V. Veen, R. Hanssen, F. J. Leijen, H. Marel, Sami Samiei-Esfahany","doi":"10.5194/piahs-382-117-2020","DOIUrl":"https://doi.org/10.5194/piahs-382-117-2020","url":null,"abstract":"Abstract. This paper describes several geodetic studies that\u0000consolidate the reliability and precision of monitoring subsidence due to\u0000hydrocarbon production: the deployment of Integrated Geodetic Reference\u0000Stations (IGRS); the application of high resolution InSAR; the comparison of\u0000different GNSS processing methodologies; the implementation of an efficient\u0000InSAR stochastic model, and the framework of integrated geodetic processing\u0000(levelling, GNSS, InSAR). The advances that have been made are applicable\u0000for any other subsidence monitoring project.\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":"79581665","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}

{"title":"Updating the subsidence map of Emilia-Romagna region (Italy) by integration of SAR interferometry and GNSS time series: the 2011–2016 period","authors":"G. Bitelli, F. Bonsignore, S. Del Conte, F. Franci, A. Lambertini, F. Novali, P. Severi, L. Vittuari","doi":"10.5194/piahs-382-39-2020","DOIUrl":"https://doi.org/10.5194/piahs-382-39-2020","url":null,"abstract":"Abstract. The analysis of the vertical movements of the soil in the\u0000Po River plane of the Emilia-Romagna Region (Italy) was updated through an\u0000interferometric analysis referred to the 2011–2016 time-span. This activity\u0000is a continuation of previous studies on the state of knowledge of vertical\u0000soil movements in the same area, analyzed firstly by levelling and GNSS and\u0000more recently by SAR interferometry for the periods 1992–2000, 2002–2006,\u00002006–2011, on behalf of the Emilia-Romagna Region. The survey area analysed\u0000was approximately 13 300 km2, which corresponds to the territory\u0000of the regional plain. The interferometric dataset was calibrated through\u0000the use of velocity time series of several permanent GNSS stations. Among\u0000the 36 stations analysed, 22 were included in the study area: 16 were used\u0000for the calibration and 6 as check points). The velocities required for the\u0000calibration of the SAR analysis were calculated in the period following the\u0000important seismic events that struck the territory of the Emilia Romagna\u0000Region in May 2012. The interferometric analysis was carried out by TRE\u0000ALTAMIRA using the SqueeSAR™ technology. In particular, in\u0000order to update the interferometric dataset to 2016, it was necessary to\u0000perform a joint processing of the available RADARSAT-1 data and of the data\u0000acquired by the RADARSAT-2 satellite using a specific operating mode of the\u0000SqueeSAR™ algorithm known as stitching; this approach allowed\u0000the joint processing of images acquired in the same geometry by these two\u0000satellites. The study of the time series of the GNSS permanent stations used\u0000to provide the velocity datum to the interferometric analysis, is described,\u0000and the results of the SqueeSAR™ interferometric processing are\u0000reported. Statistical analyses on the spatial distribution and the type of\u0000scatterers have been performed during the screening and validation\u0000procedures of the dataset, and for the identification and removal of the\u0000outliers. Finally, the resulting map is described in order to analyse the\u0000measured soil movements with respect to the results obtained in past\u0000analyses, and the possible geological and human-induced causes, which could\u0000have produced them.\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":"89461933","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}

{"title":"Remotely triggered subsidence acceleration in Mexico City induced by the September 2017 Mw 7.1 Puebla and the Mw 8.2 Tehuantepec September 2017 earthquakes","authors":"Darío Solano-Rojas, E. Cabral-Cano, E. Fernández-Torres, E. Havazli, S. Wdowinski, L. Salazar-Tlaczani","doi":"10.5194/piahs-382-683-2020","DOIUrl":"https://doi.org/10.5194/piahs-382-683-2020","url":null,"abstract":"Abstract. Mexico City, a large megacity with over 21 million inhabitants, is\u0000exposed to several hazards, including land subsidence, earthquakes, and\u0000flooding. Hazard assessments for each hazard type is typically treated\u0000separately and usually do not include considerations for any relations among the hazards. Our data makes it plausible for an earthquake triggering case that temporarily accelerated the subsidence rate in the metropolitan area as a result of the Mw 8.2 Tehuantepec and the Mw 7.1 Puebla, September 2017\u0000earthquakes that affected Mexico City. Furthermore, the triggering effect\u0000induced rapid slip along previously developed shallow faults associated with\u0000subsidence. These results indicate that any future scenario of land\u0000subsidence should consider a potential triggering effect by large\u0000earthquakes. Similarly, earthquake hazard assessments should also consider\u0000potential impact on shallow faulting and fracturing associated with land\u0000subsidence.\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":"80167150","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}

{"title":"Depressions caused by localized subsidence in the Netherlands, Belgium and Germany: a link with coal mining?","authors":"G. Vis, Erik van Linden, R. V. van Balen, K. Cohen","doi":"10.5194/piahs-382-201-2020","DOIUrl":"https://doi.org/10.5194/piahs-382-201-2020","url":null,"abstract":"Abstract. In the coal mining districts of the Netherlands, Belgium and\u0000Germany, we identified 662 previously unidentified depressions at the land\u0000surface using LIDAR data. Their density decreases westwards along with\u0000deepening of the Carboniferous coal layers, while not changing in\u0000dimensions. The timing of their formation based on historical maps and\u0000landowner reports, suggests that they mostly formed during the period\u00001920–1970, the peak of mining activity. Based on their position, density and\u0000age, we link the formation of depressions to the coal-mining activities in\u0000South Limburg, Germany and Belgium. Our working hypothesis tentatively\u0000explains the origin, mechanism of formation and timing of these local\u0000subsidence features.\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":"87531350","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}

{"title":"A multiscale approach for detection and mapping differential subsidence using multi-platform InSAR products","authors":"Darío Solano-Rojas, S. Wdowinski, E. Cabral-Cano, B. Osmanoglu, E. Havazli, J. Pacheco-Martínez","doi":"10.5194/piahs-382-173-2020","DOIUrl":"https://doi.org/10.5194/piahs-382-173-2020","url":null,"abstract":"Abstract. Detecting and mapping subsidence is currently supported\u0000by interferometric synthetic aperture radar (InSAR) products. However,\u0000several factors, such as band-dependent processing, noise presence, and\u0000strong subsidence limit the use of InSAR for assessing differential\u0000subsidence, which can lead to ground instability and damage to\u0000infrastructure. In this work, we propose an approach for measuring and\u0000mapping differential subsidence using InSAR products. We consider synthetic\u0000aperture radar (SAR) data availability, data coverage over time and space,\u0000and the region's subsidence rates to evaluate the need of post-processing,\u0000and only then we interpret the results. We illustrate our approach with two\u0000case-examples in Central Mexico, where we process SAR data from the Japanese\u0000ALOS (L-band), the German TerraSAR-X (X-band), the Italian COSMO-SkyMed\u0000(X-band) and the European Sentinel-1 (C-band) satellites. We find good\u0000agreement between our results on differential subsidence and field data of\u0000existing faulting and find potential to map yet-to-develop faults.\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":"90306383","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}

{"title":"The 6M approach to land subsidence","authors":"G. Erkens, E. Stouthamer","doi":"10.5194/piahs-382-733-2020","DOIUrl":"https://doi.org/10.5194/piahs-382-733-2020","url":null,"abstract":"Abstract. Though global awareness of land subsidence has increased\u0000over recent years, subsidence remains an ongoing and largely unsolved\u0000problem, which is exemplified by frequent discoveries of apparently new\u0000subsiding areas. This means that for many of these areas there is a\u0000continuous and growing need to provide guidance to decision makers on how to\u0000tackle this global problem. This paper presents a comprehensive,\u0000step-by-step approach to address land subsidence, illustrated by best\u0000practise examples from around the world. The approach places emphasis on the\u0000long-term sustainability of resources, whose development is related to the\u0000subsidence problems. We identified 6 steps, collectively referred to as the\u00006M approach, that are crucial to tackle subsidence: Measuring,\u0000understanding Mechanisms, Modelling, Money, Measures and Monitoring. This paper\u0000offers guidance for implementing the 6M approach, and the lessons learned\u0000from the real-life examples provide valuable information and inspiration for\u0000decision makers and experts to address subsidence. The focus is on\u0000subsidence in deltaic and coastal areas where subsidence contributes to\u0000relative sea level rise. It is expected that the 6M approach will contribute\u0000to lowering the threshold to act on subsidence. The 6M approach is also used\u0000as a guiding principle for the thematic subdivision of TISOLS, providing\u0000a meaningful linkage between subsidence science and the societal response to\u0000subsidence problems.\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":"79016311","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}

{"title":"Application of distributed fiber optic sensing technique in land subsidence monitoring in coastal areas: a case study in Tianjin, China","authors":"Suping Liu, B. Shi, K. Gu, Chengcheng Zhang, Song Zhang, Peng Yang, Jilong Yang","doi":"10.5194/piahs-382-137-2020","DOIUrl":"https://doi.org/10.5194/piahs-382-137-2020","url":null,"abstract":"Abstract. Land subsidence is a worldwide geohazard caused by various factors, and its direct impact is loss of elevation, which is especially severe in coastal areas due to sea level rise. Quantifying contributions of compressed strata is significant for evaluating the subsidence. In this paper, we used distributed fiber optic sensing (DFOS) with Brillouin scattering to monitor the strain distribution along optical cables embedded in a borehole located in Tianjin, China. The novel technique revealed that the land subsidence rate was 21.2 mm a−1 from 2017 to 2019. The strata contributed to the subsidence have been identified in the range of 3 to 35 m. The results showed good agreement with those obtained by a group of extensometers. We demonstrated that DFOS could be a supplement to land subsidence monitoring technologies in coastal 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":"79073391","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}