2015 8th International Workshop on Advanced Ground Penetrating Radar (IWAGPR)最新文献_第10页

Combined GPR and TDR measurements for snow thickness and density estimation 结合GPR和TDR测量估算雪厚和密度

2015 8th International Workshop on Advanced Ground Penetrating Radar (IWAGPR) Pub Date : 2015-07-07 DOI: 10.1109/IWAGPR.2015.7292642

F. Di Paolo, B. Cosciotti, S. Lauro, E. Mattei, M. Callegari, L. Carturan, R. Seppi, F. Zucca, E. Pettinelli

引用次数: 7

A combined GPR and SNMR monitoring of a drained intraglacial water pocket located into the polythermal glacier of Tête Rousse 探地雷达和SNMR联合监测位于Tête Rousse多热冰川内的冰内排水水袋

2015 8th International Workshop on Advanced Ground Penetrating Radar (IWAGPR) Pub Date : 2015-07-07 DOI: 10.1109/IWAGPR.2015.7292613

S. Garambois, C. Vincent, A. Legchenko, E. Thibert

{"title":"A combined GPR and SNMR monitoring of a drained intraglacial water pocket located into the polythermal glacier of Tête Rousse","authors":"S. Garambois, C. Vincent, A. Legchenko, E. Thibert","doi":"10.1109/IWAGPR.2015.7292613","DOIUrl":"https://doi.org/10.1109/IWAGPR.2015.7292613","url":null,"abstract":"Formation of intraglacial lakes in polythermal glaciers results from specific climatic, topographic and aspect conditions. Their occurrence constitutes a significant threat to the valleys located below in case of sudden discharge occurring without any warning prior signs. Such case occurred in 1892 at Saint-Gervais (French Alps), where a deadly water wave reached the town a few tens of minutes after a water-filled cavity ruptured within the Tête Rousse glacier located upstream. Further multi-method investigations of this glacier began from 2007, based initially from surface Ground Penetrating Radar (GPR) imaging and then supplemented with Surface Nuclear Magnetic Resonance (SNMR) surveys and borehole measurements. These combined study allowed first to detect and characterize a water-filled water pocket located 40 m below the surface within the glacier, and second to monitor its changes after water was drained in fall 2010 to reduce risk. Here, we will present the main GPR results obtained in this unique and complex 3D case, which will be quantitatively compared with other geophysical and borehole measurements. This case study shows the potential of combining GPR and SNMR methods for the study of polythermal glaciers.","PeriodicalId":167391,"journal":{"name":"2015 8th International Workshop on Advanced Ground Penetrating Radar (IWAGPR)","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-07-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127039376","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

Detection of air voids in concrete by radar in transmission mode 雷达在传输模式下对混凝土空隙的探测

2015 8th International Workshop on Advanced Ground Penetrating Radar (IWAGPR) Pub Date : 2015-07-07 DOI: 10.1109/IWAGPR.2015.7292650

C. Trela, T. Kind, M. Schubert

{"title":"Detection of air voids in concrete by radar in transmission mode","authors":"C. Trela, T. Kind, M. Schubert","doi":"10.1109/IWAGPR.2015.7292650","DOIUrl":"https://doi.org/10.1109/IWAGPR.2015.7292650","url":null,"abstract":"Air voids in concrete like honeycombs are one of the major concerns regarding quality assurance for the construction of infrastructure buildings like bridges or tunnels. This paper shows that voids in reinforced concrete walls or slabs can be detected by two standard ground coupled GPR antennas in transmission mode using a two-side zero-offset profiling configuration like in borehole radar applications. For the detection of voids only the amplitudes of the direct wave in transmission mode are evaluated. Even when the depth of the void can not be detected in this configuration, the major advantage of the zero-offset profiling in transmission mode is a lower interference with the surrounding reinforcement compared to a regular one-side reflection profiling. The capability of the two-side zero-offset profiling is demonstrated on a test specimen with a set of polystyrene balls of two different sizes representing voids like honeycombs in concrete. GPR measurements are realized by an automated scanning system in order to allow for a synchronous movement of the antennas. In transmission mode voids can be detected at greater depths compared to reflection mode, since the travel path of the direct wave is half as long. Another characteristic of the transmission mode is that the direct wave through the air voids is faster and arrives earlier than the direct wave in the surrounding concrete. Hence it can be separated from the strong reflection of the reinforcement. Finally the measurements in transmission mode are less sensitive to the antenna frequency and polarization than in reflection mode.","PeriodicalId":167391,"journal":{"name":"2015 8th International Workshop on Advanced Ground Penetrating Radar (IWAGPR)","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-07-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126934019","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: 11

Inverting surface GPR data to estimate wetting and drainage water retention curves in laboratory 反演地表探地雷达数据，估算实验室润湿和排水保水曲线

2015 8th International Workshop on Advanced Ground Penetrating Radar (IWAGPR) Pub Date : 2015-07-07 DOI: 10.1109/IWAGPR.2015.7292672

E. Léger, A. Saintenoy, P. Tucholka, Y. Coquet

引用次数: 3

Comparison of different antenna configurations for probing of layered media 层状介质探测中不同天线结构的比较

2015 8th International Workshop on Advanced Ground Penetrating Radar (IWAGPR) Pub Date : 2015-07-07 DOI: 10.1109/IWAGPR.2015.7292644

L. Varianytsia-Roshchupkina, G. Pochanin, I. Pochanina, S. Masalov

引用次数: 2

RIMFAX: A GPR for the Mars 2020 rover mission 里姆法克斯:2020年火星探测器任务的探地雷达

2015 8th International Workshop on Advanced Ground Penetrating Radar (IWAGPR) Pub Date : 2015-07-07 DOI: 10.1109/IWAGPR.2015.7292690

S. Hamran, T. Berger, S. Brovoll, L. Damsgård, O. Helleren, M. Oyan, J. Kohler, M. Mellon, D. Paige, H. Amundsen, L. Carter, D. Plettemeier, R. Ghent, J. Eide

引用次数: 33

The potential of common-offset GPR surveying in complex permafrost environments: An example from Northern Siberia 在复杂的永久冻土环境中，共偏移GPR测量的潜力:以北西伯利亚为例

2015 8th International Workshop on Advanced Ground Penetrating Radar (IWAGPR) Pub Date : 2015-07-07 DOI: 10.1109/IWAGPR.2015.7292701

S. Schennen, J. Tronicke

{"title":"The potential of common-offset GPR surveying in complex permafrost environments: An example from Northern Siberia","authors":"S. Schennen, J. Tronicke","doi":"10.1109/IWAGPR.2015.7292701","DOIUrl":"https://doi.org/10.1109/IWAGPR.2015.7292701","url":null,"abstract":"Permafrost environments provide typically favorable conditions for GPR reflection imaging. The subsurface architecture of this perennially frozen ground comprises unique and complex subsurface structures such as ice wedges. These features represent challenging targets for 2D and 3D common offset surveying strategies. Here, we evaluate the potential of GPR to image complex permafrost environments in Northern Siberia using synthetic and field data examples. We use a realistic 2D synthetic model derived from an outcrop photograph to investigate the potential of common-offset data to image typical structures related to ice wedges and sedimentary layers. This synthetic study illustrates that a thorough surveying and processing strategy including a proper data migration is essential to derive a meaningful subsurface model. These findings are found to be extremely useful to process and interpret a 3D data set recorded on our field site located on the New Siberian Archipelago. Here, after careful processing we are able to identify and image cryostratigraphic interfaces between and below massive ice wedges.","PeriodicalId":167391,"journal":{"name":"2015 8th International Workshop on Advanced Ground Penetrating Radar (IWAGPR)","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-07-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116727983","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

Investigation of the underground structure elements of GSM towers with GPR and GSM signal effects in GPR data 探地雷达GSM塔地下结构要素及探地雷达数据中GSM信号效应的研究

2015 8th International Workshop on Advanced Ground Penetrating Radar (IWAGPR) Pub Date : 2015-07-07 DOI: 10.1109/IWAGPR.2015.7292675

E. Çelik

{"title":"Investigation of the underground structure elements of GSM towers with GPR and GSM signal effects in GPR data","authors":"E. Çelik","doi":"10.1109/IWAGPR.2015.7292675","DOIUrl":"https://doi.org/10.1109/IWAGPR.2015.7292675","url":null,"abstract":"GSM infrastructure in Turkey began to be established in the early 90s. In this context, Telsim GSM Company was founded in 1994 and began manufacturing GSM towers. Telsim GSM Company has been transferred to the Vodafone GSM Company in 2005. Some of the old tower was demolished in recent years and has occurred in some of the structural problems. In this context, especially GPR studies have been made to take information about the current status of the old towers. And studies are still continuing. First purpose of that study, determine the main foundation of the tower, current status of the main columns and upper concrete superficies and vertical rebar's of the columns. As a second purpose is to find and determine the GSM signal effects at the GPR data. And also which the different sizes and antenna capability of the GSM towers. The scope of these two purposes, we collected data from the under 22 different towers with three different brand GPR and different frequency GPR antennas (200MHz, 250MHz, 400MHz, 500MHz, 1000MHz, 1600MHz and 1700MHz). From now we collected 200 profiles data. This study is a part of an R & D project that, obtain to search the data quality, signal impact factors, new data collection techniques and ideal antenna frequencies under the GSM towers.","PeriodicalId":167391,"journal":{"name":"2015 8th International Workshop on Advanced Ground Penetrating Radar (IWAGPR)","volume":"58 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-07-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133140530","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

High resolution holographic imaging with a robot scanner and its applications 机器人扫描仪的高分辨率全息成像及其应用

2015 8th International Workshop on Advanced Ground Penetrating Radar (IWAGPR) Pub Date : 1900-01-01 DOI: 10.1109/iwagpr.2015.7292671

I. Arezzini, A. Bulletti, M. Calzolai, A. Di Martino, P. Falorni, F. Fiesoli, L. Capineri, C. Windsor

引用次数: 0