scholarly journals Estimation of stream discharge of ungauged basins using NRCS-CN and remote sensing methods: A case study of Okhuwan and Okhaihe catchments, Benin City, Edo State, Nigeria

2021 ◽  
Vol 13 (3) ◽  
pp. 165-183
Author(s):  
E. S Isagba ◽  
O. C Izinyon ◽  
C. N Emeribe ◽  
N. O Uwadia ◽  
C. U Ezeh
Keyword(s):  
Remote Sensing ◽  
Ungauged Basins ◽  
Benin City ◽  
Stream Discharge ◽  
Edo State ◽  
Remote Sensing Methods

scholarly journals GB-SAR in the Diagnosis of Critical City Infrastructure—A Case Study of a Load Test on the Long Tram Extradosed Bridge

2020 ◽  
Vol 12 (20) ◽  
pp. 3361
Author(s):  
Przemysław Kuras ◽  
Łukasz Ortyl ◽  
Tomasz Owerko ◽  
Marek Salamak ◽  
Piotr Łaziński
Keyword(s):  
Remote Sensing ◽  
Cross Sections ◽  
Load Test ◽  
Test Method ◽  
Static Load Test ◽  
Remote Sensing Technique ◽  
Close Range ◽  
Remote Sensing Methods ◽  
Contact Measurements

This article describes a case of using remote sensing during a static load test of a large bridge, which, because of its location, belongs to a critical city infrastructure. The bridge in question is the longest tram flyover in Poland. This is an extradosed-type concrete structure. It conducts a long tram line over 21 other active lines of an important railway station in the center of Cracow. The diagnostic of such bridges involving the load test method is difficult. Traditional, contact measurements of span displacements are not enough anymore. In such cases, remote sensing becomes an indispensable solution. This publication presents an example of using the close-range radar remote sensing technique of ground-based radar interferometry. However, the cross-sections of the huge bridge were observed using several methods. The aim was to confirm the conditions and efficiency of radar displacement measurements. They were therefore traditional contact measurements using mechanic sensors conducted, if possible, to the bottom of the span, for precise leveling and measurement using electronic total station. Comparing the results as well as the discussion held demonstrated the fundamental advantages of remote sensing methods over the other more traditional techniques.

Emerging Remote Sensing Methods in Underwater Archaeology

2019 ◽  
pp. 221-240 ◽  
Author(s):  
Timothy S. de Smet
Keyword(s):  
Remote Sensing ◽  
Ground Penetrating Radar ◽  
Underwater Archaeology ◽  
Side Scan Sonar ◽  
Depth Sounding ◽  
Ground Penetrating ◽  
Remote Sensing Methods ◽  
Lake George

As a critical first step in underwater research, the authors stress the importance of using geophysics for detecting, locating, and determining the extent of archaeological deposits. Magnetometry, multibeam depth sounding, side-scan sonar, sub-bottom profiling, airborne bathymetric LiDAR (ABL), and ground-penetrating radar (GPR) are discussed. The hydrographic GPR case study of stratigraphy and bathymetry took place at the Ryan-Harley site. The ABL case study took place at the Lake George Point Site.

scholarly journals RIVER SEDIMENT MONITORING USING REMOTE SENSING AND GIS (CASE STUDY KARAJ WATERSHED)

2015 ◽  
Vol XL-1-W5 ◽  
pp. 675-680 ◽  
Author(s):  
M. Shafaie ◽  
H. Ghodosi ◽  
K. H. Mostofi
Keyword(s):  
Remote Sensing ◽  
River Sediment ◽  
Surface Soil ◽  
River Sediments ◽  
Rivers And Lakes ◽  
Hydraulic Station ◽  
Remote Sensing Techniques ◽  
Remote Sensing Methods ◽  
Basin Area

Whereas the tank volume and dehydrating digits from kinds of tanks are depended on repository sludge, so calculating the sediments is so important in tank planning and hydraulic structures. We are worry a lot about soil erosion in the basin area leading to deposit in rivers and lakes. It holds two reasons: firstly, because the surface soil of drainage would lose its fertility and secondly, the capacity of the tank decreases also it causes the decrease of water quality in downstream. Several studies have shown that we can estimate the rate of suspension sediments through remote sensing techniques. Whereas using remote sensing methods in contrast to the traditional and current techniques is faster and more accurate then they can be used as the effective techniques. The intent of this study has already been to estimate the rate of sediments in Karaj watershed through remote sensing and satellite images then comparing the gained results to the sediments data to use them in gauge-hydraulic station. We mean to recognize the remote sensing methods in calculating sediment and use them to determine the rate of river sediments so that identifying their accuracies. According to the results gained of the shown relations at this article, the amount of annual suspended sedimentary in KARAJ watershed have been 320490 Tones and in hydrologic method is about 350764 Tones .

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