Pub Date : 1900-01-01DOI: 10.25171/instgeoph_pas_publs-2021-038
A. M. Bento, J. P. Pêgo, Lúcia Couto, T. Viseu
Local scour has been widely identified as one of the primary threats to bridge pier stability. To better understand how the turbulent flow field modified by bridge piers interacts with the bed surface, it is relevant to assess the flow structures that are potentially sufficient to remove the bed material. Thus, the accuracy and measurement quality in estimating the flow field is of primordial importance, mainly in a well-controlled laboratory environment. In the present study, time-averaged velocities and Reynolds shear stresses were measured by using a highresolution acoustic velocimeter. Due to the highly turbulent nature of the flow, an assessment of the signal acquisition time’s influence on the statistics of turbulent quantities is performed, including the inherent uncertainties regarding the flow field measurement technique. The results showed that the required sampling time for mean and fluctuation velocities, and the lateral Reynolds shear stress, differ by one order of magnitude.
{"title":"Assessing the Flow Field around an Oblong Bridge Pier. Vectrino Acquisition Time Sensitivity Analysis","authors":"A. M. Bento, J. P. Pêgo, Lúcia Couto, T. Viseu","doi":"10.25171/instgeoph_pas_publs-2021-038","DOIUrl":"https://doi.org/10.25171/instgeoph_pas_publs-2021-038","url":null,"abstract":"Local scour has been widely identified as one of the primary threats to bridge pier stability. To better understand how the turbulent flow field modified by bridge piers interacts with the bed surface, it is relevant to assess the flow structures that are potentially sufficient to remove the bed material. Thus, the accuracy and measurement quality in estimating the flow field is of primordial importance, mainly in a well-controlled laboratory environment. In the present study, time-averaged velocities and Reynolds shear stresses were measured by using a highresolution acoustic velocimeter. Due to the highly turbulent nature of the flow, an assessment of the signal acquisition time’s influence on the statistics of turbulent quantities is performed, including the inherent uncertainties regarding the flow field measurement technique. The results showed that the required sampling time for mean and fluctuation velocities, and the lateral Reynolds shear stress, differ by one order of magnitude.","PeriodicalId":240087,"journal":{"name":"Publications of the Institute of Geophysics, Polish Academy of Sciences; Geophysical Data Bases, Processing and Instrumentation","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126170685","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}
Pub Date : 1900-01-01DOI: 10.25171/instgeoph_pas_publs-2021-020
{"title":"In-situ Survey of an Unstructured Block Ramp","authors":"","doi":"10.25171/instgeoph_pas_publs-2021-020","DOIUrl":"https://doi.org/10.25171/instgeoph_pas_publs-2021-020","url":null,"abstract":"","PeriodicalId":240087,"journal":{"name":"Publications of the Institute of Geophysics, Polish Academy of Sciences; Geophysical Data Bases, Processing and Instrumentation","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130523508","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}
Pub Date : 1900-01-01DOI: 10.25171/instgeoph_pas_publs-2021-035
{"title":"Riparian Plants’ Morphometry Derived by RGB + Structured-light 3D Scanning within Real Vegetated Flows","authors":"","doi":"10.25171/instgeoph_pas_publs-2021-035","DOIUrl":"https://doi.org/10.25171/instgeoph_pas_publs-2021-035","url":null,"abstract":"","PeriodicalId":240087,"journal":{"name":"Publications of the Institute of Geophysics, Polish Academy of Sciences; Geophysical Data Bases, Processing and Instrumentation","volume":"54 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129478884","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}
Pub Date : 1900-01-01DOI: 10.25171/instgeoph_pas_publs-2021-019
{"title":"Laboratory Experiments on Gravity Currents Interacting with Upslope and Overhang Barriers","authors":"","doi":"10.25171/instgeoph_pas_publs-2021-019","DOIUrl":"https://doi.org/10.25171/instgeoph_pas_publs-2021-019","url":null,"abstract":"","PeriodicalId":240087,"journal":{"name":"Publications of the Institute of Geophysics, Polish Academy of Sciences; Geophysical Data Bases, Processing and Instrumentation","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116680082","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}
Pub Date : 1900-01-01DOI: 10.25171/instgeoph_pas_publs-2022-023
{"title":"Nimbo-stratus and Stratus Cloud Atmospheric Electricity Database and Analysis Methods for the Project “Research Studies on the Electricity of Low-Level Layer Clouds for the Pur-pose of Developments in Global Atmospheric Circuit Modelling (ELLEC)”","authors":"","doi":"10.25171/instgeoph_pas_publs-2022-023","DOIUrl":"https://doi.org/10.25171/instgeoph_pas_publs-2022-023","url":null,"abstract":"","PeriodicalId":240087,"journal":{"name":"Publications of the Institute of Geophysics, Polish Academy of Sciences; Geophysical Data Bases, Processing and Instrumentation","volume":"54 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121842940","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}
Pub Date : 1900-01-01DOI: 10.25171/instgeoph_pas_publs-2022-022
{"title":"Dynamic and Electric Charge Structure of Thunderclouds Obtained from the WRF and WRF_ELEC Models and Related to the Charge Sources of Multiple CG Flashes Detected by the LLDN in the Warsaw Region during Thunder-storm Season in 2009","authors":"","doi":"10.25171/instgeoph_pas_publs-2022-022","DOIUrl":"https://doi.org/10.25171/instgeoph_pas_publs-2022-022","url":null,"abstract":"","PeriodicalId":240087,"journal":{"name":"Publications of the Institute of Geophysics, Polish Academy of Sciences; Geophysical Data Bases, Processing and Instrumentation","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132023349","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}
Pub Date : 1900-01-01DOI: 10.25171/instgeoph_pas_publs-2021-005
{"title":"Automating Hydraulic Engineering Experiments","authors":"","doi":"10.25171/instgeoph_pas_publs-2021-005","DOIUrl":"https://doi.org/10.25171/instgeoph_pas_publs-2021-005","url":null,"abstract":"","PeriodicalId":240087,"journal":{"name":"Publications of the Institute of Geophysics, Polish Academy of Sciences; Geophysical Data Bases, Processing and Instrumentation","volume":"39 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121567493","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}
Pub Date : 1900-01-01DOI: 10.25171/instgeoph_pas_publs-2021-022
J. Taye, B. Kumar
{"title":"Turbulence Anisotropy in a Sinuous Channel with Downward Seepage","authors":"J. Taye, B. Kumar","doi":"10.25171/instgeoph_pas_publs-2021-022","DOIUrl":"https://doi.org/10.25171/instgeoph_pas_publs-2021-022","url":null,"abstract":"","PeriodicalId":240087,"journal":{"name":"Publications of the Institute of Geophysics, Polish Academy of Sciences; Geophysical Data Bases, Processing and Instrumentation","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121724342","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}
Pub Date : 1900-01-01DOI: 10.25171/instgeoph_pas_publs-2022-024
{"title":"Red Sprites over Thunderstorms in Czech Republic, Germany and Poland Observed from Gliwice in 2011–2013","authors":"","doi":"10.25171/instgeoph_pas_publs-2022-024","DOIUrl":"https://doi.org/10.25171/instgeoph_pas_publs-2022-024","url":null,"abstract":"","PeriodicalId":240087,"journal":{"name":"Publications of the Institute of Geophysics, Polish Academy of Sciences; Geophysical Data Bases, Processing and Instrumentation","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125339174","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}
Pub Date : 1900-01-01DOI: 10.25171/instgeoph_pas_publs-2021-032
{"title":"Assessing Underwater Visibility Conditions in a Large River","authors":"","doi":"10.25171/instgeoph_pas_publs-2021-032","DOIUrl":"https://doi.org/10.25171/instgeoph_pas_publs-2021-032","url":null,"abstract":"","PeriodicalId":240087,"journal":{"name":"Publications of the Institute of Geophysics, Polish Academy of Sciences; Geophysical Data Bases, Processing and Instrumentation","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127097591","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}
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