Results 111 to 120 of about 2,389 (219)
Volume estimation of Styggedalsbreen glacier : Application of Ground Penetrating Radar for ice thickness measurement, mapping of subglacial bed topography, and volume estimation of Styggedalsbreen glacier [PDF]
, 2014 Small valley glaciers respond fast to climate changes, but are also highly affected by short-term fluctuations in local precipitation and temperature. The purpose of this bachelor thesis is to use Ground Penetrating Radar (GPR) to estimate the volume of ...
Bakken, Skjalg Lie +2 more
core
Georadar - high resolution geophysical electromagnetic device
Geologija, 1995 Georadar is a high resolution geophysical electromagnetic device that was developed in the first part of the 1980's. In Slovenia it was first tested in 1991 on several objects of economicgeological, geotechnical and hydrogeologic nature.Here its ...
Janez Stern +3 more
doaj
Microgravimetric and GPR surveys for detection of unconsolidated zones in a levee
E3S Web of Conferences, 2018 Selected results of complex geophysical surveys carried out on the Vistula river flood levee in Cracow are herein presented. Two complementary geophysical methods were applied for detection of potential unconsolidated zones in the body of the levee, i.e.
Łój Monika +3 more
doaj +1 more source
Evaluating Ground-Penetrating Radar use for water infiltration monitoring
, 2006 International audienceGround-Penetrating Radar (GPR) was tested to monitor water infiltration in sand. Water was injected down an 81 cm long tubed hole, with a piezometer recording the depth of water and a tap valve used to adjust it to 15 cm ± 2 cm ...
Albane Saintenoy +37 more
core +5 more sources
Subgrade Distress Detection in GPR Radargrams Using an Improved YOLOv11 Model
SustainabilityThis study compares three detectors—Single Shot MultiBox Detector (SSD), Faster Region-based Convolutional Neural Network (Faster R-CNN), and Only Look Once v11 (YOLOv11)—for detecting subgrade distress in GPR radargrams. SSD converges fastest but shows weaker detection performance, while Faster R-CNN achieves higher localization accuracy at the cost ...
Mingzhou Bai +3 more
openaire +1 more source
Remote SensingHyperbolae in radargrams are caused by a variety of small subsurface objects. The analysis of their curvature enables the determination of propagation velocity in the subsurface, which is important for exact time-to-depth conversion and migration and ...
Tina Wunderlich +4 more
doaj +1 more source
Remote SensingIn this study, the full-focusing (FF) algorithm is reviewed with the objective of optimizing it for processing data from different types of surfaces probed in altimetry.
Samira Amraoui +9 more
doaj +1 more source
Applied SciencesGround-penetrating radar (GPR) is a non-invasive technology that uses electromagnetic pulses for subsurface exploration. In the railroad sector, it is crucial to assessing soil layers and infrastructure, offering insights into soil stratification and ...
Lukas Lahnsteiner +3 more
doaj +1 more source
Remote SensingThe polar regions of Mars, including the South and North Poles, are crucial for studying Martian climate and geological history, as they contain the largest reservoir of subsurface water ice.
Xin Shu, Hongxia Ye
doaj +1 more source
A simple Approach for radargram Pattern Recognition: Identification of Metal and Non Metal Object
, 2017 Ground Penetrating radar is an active geophysical methods which is mostly used to interpret objects buried under the surface or to determine the distribution of shallow subsurface sediments. Radargram as one of digital recording signals forms on GPR is often analysed using variety of mathematics and physics attributes to determine subsurface objects ...
Galih Prasetya Dinanta +2 more
openaire +2 more sources