Temat: Ground Penetrating Radar - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Practice of geo-radar research in the Republic of Kazakhstan
Autorzy:: Burtyl, Yuri
Kapski, Denis
Czerepicki, Andrzej
Powiązania:: https://bibliotekanauki.pl/articles/38955772.pdf
Data publikacji:: 2023
Wydawca:: Politechnika Warszawska, Wydział Transportu
Tematy:: georadar
ground penetrating radar
methodology of field studies
radargram
thickness of monolithic layers
cement concrete pavement
asphalt pavement
metodologia badań terenowych
radarogramy
grubość warstw monolitycznych
nawierzchnia z betonu cementowego
nawierzchnia asfaltowa
Opis:: The article considers the issues of applying ground penetrating radar (GPR) technologies for engineering purposes concerning subsurface research. It describes the field of application of GPR research during road construction and operation and the advantages and disadvantages of this type of engineering survey. It presents comparative data on the accuracy (inaccuracy) of existing GPR control methods applied to determine the thickness of the monolithic pavement layers in Europe, CIS, and the USA. The main provisions of the GPR survey procedure are described, including four main stages: the analysis of initial materials of surveyed section and equipment preparation; GPR survey; geological verification; processing and interpreting of radargrams; and the preparation of a report. Geophysical works were performed using the geo-radar of the OKO series as part of the road measuring complex DVK-05 on the section of the Astana-Petropavlovsk A-1 highway with cement concrete pavement and on the section of the R-12 "Kokshetau - Atbasar" with asphalt pavement. The example of a radargram and the core sample of a cement concrete pavement taken during geological verification of the thickness of a monolithic layer is presented. Graphs of variation in the thickness of pavement layers by radargrams of longitudinal passages in the indicated road sections with the assumptions about the nature of the heterogeneity of the obtained values are given. The obtained results on the thickness of monolithic layers (cement concrete and asphalt concrete) were assessed on the criteria of quantitative deviation from the required standard value. Recommendations were provided to address positive deviations in the thickness of monolithic pavement layers at various stages of the road survey.
Źródło:: WUT Journal of Transportation Engineering; 2023, 136; 61-69
1230-9265
Pojawia się w:: WUT Journal of Transportation Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: The Workflow of Ground Penetrating Radar Data Analysis Based on Maximum Energy Difference Steering
Przebieg pracy z danymi radarowymi penetrującymi ziemię Analiza oparta na sterowaniu maksymalną różnicą energii
Autorzy:: Dang, Duy Hoang
Le, Cuong Van Anh
Nguyen, Thuan Van
Nguyen, Long Quoc
Huynh, Nhan Thanh
Powiązania:: https://bibliotekanauki.pl/articles/28756746.pdf
Data publikacji:: 2023
Wydawca:: Polskie Towarzystwo Przeróbki Kopalin
Tematy:: ground penetrating radar
phase analysis
energy difference
radar penetrujący podłoże
analiza fazowa
różnica energii
Opis:: Ground Penetrating Radar is commonly used in civil engineering sectors. Underground anomalies (i.e., electric wires, water pipes or sinkholes) can be detected through representations of hyperbolae in the measured processed GPR image. Our work focuses on detecting the underground objects and understanding their metallic or nonmetallic characteristics. The max energy difference attribute is applied to illuminate their positions while phase analysis process can determine change of phase spectrum in the diffracted signals. For improving phase analysis, we applied a novel workflow combining conventional processed steps and a zooming step for preserving phase originality without disturbed by any unnecessary filters. We applied the workflow in model and real data for proving its effectiveness. Interpretation of two real datasets in Vietnam by our workflow can express existences of the artificial underground anomalies as well as their matter characteristics comparing to their surrounding environments.
Ground Penetrating Radar jest powszechnie stosowany w inżynierii lądowej i wodnej. Podziemne anomalie (np. przewody elektryczne, rury wodociągowe lub zapadliska) można wykryć za pomocą reprezentacji hiperbol w zmierzonym przetworzonym obrazie GPR. Nasza praca koncentruje się na wykrywaniu podziemnych obiektów i zrozumieniu ich metalicznych lub niemetalicznych wła-ściwości. Atrybut maksymalnej różnicy energii jest stosowany do oświetlania ich pozycji, podczas gdy proces analizy fazowej może określić zmianę widma fazowego w dyfrakcyjnych sygnałach. Aby usprawnić analizę fazową, zastosowaliśmy nowatorski przepływ pracy łączący konwencjonalne kroki przetwarzania i krok powiększania w celu zachowania oryginalności fazy bez zakłócania przez niepotrzebne filtry. Zastosowaliśmy przepływ pracy w modelu i rzeczywistych danych, aby udowodnić jego skuteczność. Interpretacja dwóch rzeczywistych zbiorów danych w Wietnamie za pomocą naszego przepływu pracy może wyrazić istnienie sztucznych anomalii podziemnych, a także ich charakterystykę materii w porównaniu z otaczającym je środowiskiem.
Źródło:: Inżynieria Mineralna; 2023, 1; 195--202
1640-4920
Pojawia się w:: Inżynieria Mineralna
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: A Review on Impulse RADAR
Autorzy:: Kumar, Saket
Kumar, Amit
Singh, Vikrant
Singh, Abhishek Kumar
Powiązania:: https://bibliotekanauki.pl/articles/2055207.pdf
Data publikacji:: 2021
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: radar
impulse radar
ground penetrating radar
GPR
Opis:: RADAR plays a vital role in military applications since its origin in the 2nd world war. Recently it has been used in surface inception, health monitoring, infrastructure health monitoring, etc. In these applications, Ultra-wideband RADAR systems are more popular than traditional RADAR systems. Impulse RADAR is a special kind of ultra-wideband RADAR, which is mostly used for surface penetration, through-wall imaging, antimissile detection, anti-stealth technology, etc. because of its high resolution and low center frequency. Out of all these applications, impulse RADAR has been used intensively as a ground-penetrating RADAR for the detection of land mines, underlying pipelines, buried objects, etc. This report has attempted to provide the steps for designing the impulse ground penetrating RADAR (GPR) as well as provides the value of crucial parameters required in the design process of commercial GPR systems.
Źródło:: International Journal of Electronics and Telecommunications; 2021, 67, 4; 579--587
2300-1933
Pojawia się w:: International Journal of Electronics and Telecommunications
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: Skanowanie konstrukcji, wykorzystanie metody prądów wirowych i georadarowej do celów lokalizacji i detekcji zbrojenia
Concrete scanning, use of eddy current and ground penetrating radar methods for detection and rebar localization
Autorzy:: Giryn, Stefan
Powiązania:: https://bibliotekanauki.pl/articles/2056001.pdf
Data publikacji:: 2021
Wydawca:: Polski Związek Inżynierów i Techników Budownictwa
Tematy:: diagnostyka budowlana
badanie nieniszczące
żelbet
skanowanie konstrukcji
lokalizacja zbrojenia
otulina betonowa
pomiar
metoda prądów wirowych
georadar
GPR
wiercenie bezpieczne
building diagnostics
non-destructive testing
reinforced concrete
construction scanning
location of reinforcement
concrete cover
measuring
eddy-current method
ground penetrating radar
safe coring
Opis:: Artykuł przedstawia zyskujące w ostatnim czasie na popularności i znaczeniu elektromagnetyczne metody nieniszczące badań (skanowania konstrukcji), indukcję elektromagnetyczną zwaną też metodą prądów wirowych (Eddy Current) i metodę georadarową (GPR). Przybliżono ich zasadę działania, możliwości i ograniczenia, a przede wszystkim porównano uzyskane nimi wyniki na podstawie przeprowadzonych przez autora skanowań.
Article presents the recently gaining popularity and importance electromagnetic nondestructive concrete scanning methods, electromagnetic induction (also known as eddy current or Foucault’s currents) and ground penetrating radar (GPR). It discusses their principle of operation, possibilities and limitations, and above all compares the obtained results based on the scans performed by the author.
Źródło:: Przegląd Budowlany; 2021, 92, 10; 54--57
0033-2038
Pojawia się w:: Przegląd Budowlany
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 5.

Tytuł:: Unmanned ground vehicle equipped with ground penetrating radar for improvised explosives detection
Autorzy:: Szynkarczyk, Piotr
Wrona, Józef
Pasternak, Mateusz
Rubiec, Arkadiusz
Serafin, Piotr
Powiązania:: https://bibliotekanauki.pl/articles/2141880.pdf
Data publikacji:: 2021
Wydawca:: Sieć Badawcza Łukasiewicz - Przemysłowy Instytut Automatyki i Pomiarów
Tematy:: improvised explosive devices detection
unmanned ground vehicle
ground penetrating radar
Opis:: The article presents some objectives and results of the European Defense Agency Program on: Improvised Explosive Devices Detection (IEDDET Program). The goal of the article is to describe the work, results and recommendations regarding Unmanned Ground Vehicle (UGV) and Ground Penetrating Radar (GPR) - contributions within the MUSICODE project. Its scope and goals were presented, which are in line with the objectives of the IEDDET Program taking into consideration that the recommendations (for UGV and GPR) are related to the goals, not the results of MUSICODE project. There were described scenarios and the resulting changes in the structure implemented in the UGV - the FLORIAN robot which served as a sensors carrier including Ground Penetrating Radar (GPR). The main focus of the article is to find the answer to the research question: what is an impact of using the GPR to be mounted on the UGV to detect improvised explosive devices (IEDs) on the UGV construction and the GPR results. The structure of this radar was described and examples of tests results were presented. The summary presents recommendations for the construction of an unmanned land platform to carry sensors used in the work carried out in the MUSICODE project and conclusions regarding GPR, resulting from the experiences gained under the IEDDET Program.
Źródło:: Journal of Automation Mobile Robotics and Intelligent Systems; 2021, 15, 2; 20-31
1897-8649
2080-2145
Pojawia się w:: Journal of Automation Mobile Robotics and Intelligent Systems
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 6.

Tytuł:: Agricultural Tile Drainage Detection within the Year Using Ground Penetrating Radar
Autorzy:: Karásek, Petr
Nováková, Eva
Powiązania:: https://bibliotekanauki.pl/articles/123157.pdf
Data publikacji:: 2020
Wydawca:: Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:: tile drainage detection
tile drain
ground penetrating radar
GPR
geophysical method
soil amelioration
Opis:: The aim of this study was to identify the tile drainage systems within the year (from spring to autumn) using the ground penetrating radar (GPR) geophysical method. The measurements were performed in the experimental locality Dehtáře in the Bohemo-Moravian Highland (Czech Republic) in the years 2016 and 2017. The profiles located in the drained area were repeatedly measured together with the drainage discharges, soil moisture and groundwater level. The best visibility of tile drains was observed during snowmelt (in March and April) when the drainage discharges usually reach their maximum. In other months, the visibility of the drains was variable, but mostly worse. For a reliable detection of individual drains, the measurements above the drainage must be performed in several profiles. Under the conditions of the Czech Republic, the best results were obtained by a 500 MHz frequency antenna.
Źródło:: Journal of Ecological Engineering; 2020, 21, 4; 203-211
2299-8993
Pojawia się w:: Journal of Ecological Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 7.

Tytuł:: An integrated geoarchaeological approach to late Iron Age settlement at Kaštelina hillfort (Lopar, Island of Rab, Croatia) using Amplitude Data Comparison (ADC) method and trial excavation
Autorzy:: Androić Gračanin, Paula
Welc, Fabian
Konestra, Ana
Nowacki, Bartosz
Powiązania:: https://bibliotekanauki.pl/articles/1634067.pdf
Data publikacji:: 2020-12-19
Wydawca:: Uniwersytet Warszawski. Wydawnictwa Uniwersytetu Warszawskiego
Tematy:: Northeast Adriatic
hillfort settlement
Late Iron Age building structures
geophysical survey
Amplitude Data Comparison (ADC) method
archaeological excavation
ground penetrating radar
magnetometry
multidisciplinary research
Opis:: Geophysical prospection and small-scale archaeological excavation were undertaken on the site of Kaštelina, a Late Iron Age hillfort settlement located on the Stolac promontory in the eastern part of Rab island (Kvarner Gulf, Croatia). Within the frame of the “Archaeological topography of the island of Rab” program, a Polish–Croatian team applied a series of multidisciplinary methods to study the occupational history of the site, its preservation, the nature of selected site features and future research potential. Ground-penetrating radar and magnetometer surveys, combined with the implementation of the Amplitude Data Comparison (ADC) method, led to the detection of remains of Late Iron Age building structures distributed over the northwestern side of the Stolac promontory. Archaeological excavations verifying the findings of the geophysical survey resulted in the discovery of a dwelling with associated outdoor features. A preliminary assessment of the outcome of a multidisciplinary approach to the study of the site of Kaštelina emphasizes the importance of the collected data for a general understanding of Late Iron Age settlements and their internal organisation in a wider context.
Źródło:: Polish Archaeology in the Mediterranean; 2020, 29(2); 447-467
1234-5415
Pojawia się w:: Polish Archaeology in the Mediterranean
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 8.

Tytuł:: Detection of Underground Anomalies Using Analysis of Ground Penetrating Radar Attribute
Wykrywanie anomalii podziemnych za pomocą analizy wskazań radaru penetrującego ziemię
Autorzy:: Le, Cuong Van Anh
Nguyen, Thuan Van
Powiązania:: https://bibliotekanauki.pl/articles/971126.pdf
Data publikacji:: 2020
Wydawca:: Polskie Towarzystwo Przeróbki Kopalin
Tematy:: migracja
szacowanie prędkości
wskaźniki radaru penetrującego ziemię
migration
velocity estimation
Ground Penetrating Radar attribute
Opis:: Need of specifying underground construction works for supporting further tasks as maintenance, repairing, or setting up new underground structures. For these needs, ground penetrating radar, one of the efficient geophysical methods, can bring high-resolution and quick underground image revealing existence of both natural and artificial anomalies. Its fixed receiver-transmitter antennas setting as constant offset is commonly used in urban areas. Conventionally, hyperbolae events are crucial indicator for scattering objects as kinds of pipes, water drainage system, and concrete building structures as well as sink holes. Calculation of their depths and sizes requires migration analysis with the environment velocity. Migrated sections with different velocity show different chaos degrees of transformation from a hyperbola diffraction curve to its focused area. We have researched diagrams of different Ground Penetrating Radar attributes as energy, entropy, and varimax dependent on two variables, velocity and window zone covering diffraction events from a set of synthetic data and real data, in specifying the environment velocity. We have developed a novel technique for evaluation of the ground velocity and object’s size by combination of the new varimax diagram and the Kirchhoff migration method. The technique can define contribution of diffracted ground penetrating radar waves for building the diagram after removing the reflection contribution. The synthetic datasets consist of different random background noise levels and expressions of different-sized circular and rectangular pipes. The real data is measured for detecting two underground gas pipes in Ba Ria – Vung Tau province, Vietnam.
Konieczność określenia parametrów podziemnych budowli ma na celu wytyczanie dalszych zadań, takich jak konserwacja, naprawa lub ustawianie nowych konstrukcji podziemnych. Dla tych potrzeb radar penetrujący ziemię, jedna z wydajnych metod geofizycznych, pozwala osiągnąć wysoką rozdzielczość podziemnego obrazu ukazującego istnienie zarówno naturalnych jak i sztucznych anomalii. Stałe ustawienie anten odbiornika i nadajnika jest powszechnie stosowane na obszarach miejskich. Konwencjonalnie opis za pomocą hiperboli jest kluczowym wskaźnikiem rozproszenia obiektów, takich jak rury, system odprowadzania wody i betonowe konstrukcje budowlane, a także ujścia wody. Obliczanie ich głębokości i rozmiarów wymaga analizy migracji w środowisku. Migracja o różnej prędkości pokazuje różne stopnie transformacji od krzywej dyfrakcji do jej zogniskowanego obszaru. Przebadano diagramy różnych nastawień radaru penetrującego grunt, takich jak energia, entropia i varimax, zależnych od dwóch zmiennych, prędkości i parametrów okna obejmującego dyfrakcję dla zestawu danych syntetycznych i danych rzeczywistych. Opracowano nową technikę oceny prędkości w gruncie i wielkości obiektu poprzez połączenie nowego diagramu varimax i metody migracji Kirchhoffa. Technika taka może zdefiniować udział fal radarowych w ugiętym gruncie na podstawie diagramu po usunięciu udziału odbicia. Syntetyczne zestawy danych składają się z różnych losowych poziomów hałasu tła i różnej wielkości rur okrągłych i prostokątnych. Rzeczywiste dane są mierzone w celu wykrycia dwóch podziemnych rur gazowych w Ba Ria – prowincja Vung Tau, Wietnam
Źródło:: Inżynieria Mineralna; 2020, 1, 1; 23-33
1640-4920
Pojawia się w:: Inżynieria Mineralna
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 9.

Tytuł:: GPR as a support tool in determining the causes of failure of objects built in the “white box” technology
GPR jako narzędzie wspierające w określaniu przyczyn awarii obiektów zbudowanych w technologii "białej wanny"
Autorzy:: Lejzerowicz, A.
Wutke, M.
Powiązania:: https://bibliotekanauki.pl/articles/231334.pdf
Data publikacji:: 2020
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: badanie nieinwazyjne
metoda georadarowa
GPR
technologia białej wanny
stała dielektryczna
amplituda fali
fala elektromagnetyczna
non-destructive testing
ground penetrating radar
white box technology
dielectric constant
wave amplitude
electromagnetic wave
Opis:: From the construction made in the “white box” technology, first of all tightness is required - on the structural elements there should not be any cracks or scratches, through which water could penetrate, which in consequence may lead to deformation of structural elements and even loosing of their load-bearing capacity. Among the methods enabling the location of weakened places in watertight concrete, the ground penetrating radar (GPR) method is effective because the local occurrence of water in the structure evokes a clear and unambiguous anomaly on the radargram. In addition, the GPR method allows you to indicate places where water flows without the necessity of excluding the object from use and interference in the construction layers. The designation of such locations will make it possible to undertake technical activities that can facilitate the takeover of water and thus ensure the desired load-bearing capacity and usability of the object. Using the GPR method, you can also designate places that have already been deformed – discontinuities or breaking. The article presents a case study of investigations that determine the causes of leakage of tunnels made in the “white box” technology in: twice within the bottom slab of the tunnel (1 GHz air-coupled and 400 MHz ground-coupled antenna) and once in the case of tunnel walls (1.6 GHz ground-coupled antenna).
Od konstrukcji wykonanej w technologii "białej wanny" wymagana jest przede wszystkim szczelność - na elementach konstrukcyjnych nie powinno być żadnych pęknięć ani zadrapań, przez które woda może przenikać, ponieważ to w konsekwencji może prowadzić do deformacji elementów konstrukcyjnych, a nawet utraty ich nośności. Wśród metod umożliwiających lokalizację osłabionych miejsc w wodoszczelnym betonie, metoda georadarowa (ang. ground penetrating radar - GPR), jest skuteczna, ponieważ lokalne występowanie wody w strukturze wywołuje wyraźną i jednoznaczną anomalię na otrzymanym obrazie (radargramie). Ponadto metoda GPR pozwala wskazać miejsca, w których woda przepływa bez konieczności wyłączania obiektu z użytkowania i bez ingerowania w warstwy konstrukcyjne. Wyznaczenie takich miejsc umożliwia podjęcie działań technicznych, które mogą ułatwić przejęcie wody, a tym samym zapewnić pożądaną nośność i użyteczność obiektu. Za pomocą metody GPR można również wyznaczyć miejsca, które zostały już zdeformowane – miejsca nieciągłości lub ugięć czy spękań. Artykuł przedstawia studium przypadku oraz badania, które umożliwiły określenie przyczyny wycieku w obrębie tunelu wykonanego w technologii "białej wanny" - w obrębie płyty dennej tunelu (z wykorzystaniem anteny o częstotliwości 1 GHz sprzężonej z powietrzem oraz z wykorzystaniem anteny o częstotliwości 400 MHz sprzężonej z ziemią), jak również w przypadku ścian tunelu (antena o częstotliwości 1,6 GHz sprzężona z ziemią).
Źródło:: Archives of Civil Engineering; 2020, 66, 3; 173-189
1230-2945
Pojawia się w:: Archives of Civil Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 10.

Tytuł:: Implementation of GPR and TLS data for the assessment of the bridge slab geometry and reinforcement
Autorzy:: Cafiso, S.
Di Graziano, A.
Goulias, D.
Mangiameli, M.
Mussumeci, G.
Powiązania:: https://bibliotekanauki.pl/articles/230272.pdf
Data publikacji:: 2020
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: georadar
skanowanie laserowe naziemne
płyta mostowa
geometria
zbrojenie
ground penetrating radar
terrestrial laser scanning
bridge slab
geometry
reinforcement
Opis:: This paper presents a suggested approach for forensic investigation of bridge decks in which Ground penetrating radar (GPR) consisting of two antennas is used to assess the current conditions. The methodology was tested on a bridge deck in central Sicily. The acquired data were analyzed for identifying the asphalt overlay thickness, concrete cover depth and deck thickness and location of the rebar reinforcement. In the proposed approach for assessing bridge deck conditions the GPR survey was complemented with (i) a site investigation on layer thicknesses for calibration/verification purposes of the GPR response and (ii) a Terrestrial Laser Scanning system (TLS) to verify the bridge design slab curvature. The study shows that this methodology has significant merits on accurately assessing such bridge deck components when bridge design records are non-existing, and by using non-invasive methods such as laser scanning and GPR. The great advantage provided by the TLS technique is the possibility to obtain a 3D output model of the scanned element with the accuracy of the best topographic instruments in order to complement GPR data surveys for bridge inspection.
Źródło:: Archives of Civil Engineering; 2020, 66, 1; 297-308
1230-2945
Pojawia się w:: Archives of Civil Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 11.

Tytuł:: Results of geophysical scanning of a Roman senatorial villa in the Santa Marina Bay (Croatia, Istria) using the amplitude data comparison method (ADCM)
Autorzy:: Welc, Fabian
Rousse, Corinne
Bencic, Gaetano
Powiązania:: https://bibliotekanauki.pl/articles/2024852.pdf
Data publikacji:: 2020
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: archaeology
geophysics
ground-penetrating radar
magnetometry
Roman period
Croatia
Opis:: The article presents application of the new geophysical amplitude data comparison method (ADCM), resulting from integrated geophysical survey using ground-penetrating radar (GPR) and magnetometry. The ADCM was applied to recognize the horizontal and vertical stratigraphy of a Roman senatorial villa located in Santa Marina (western part of Croatian Istria). The measurements were carried out in 2017−2019 at this site, accompanied by a use of GPR and gradientometer. These two methods significantly differ from each other, but on the other hand, they are complementary to some extent. This is due to the fact that the methods register different types of underground materials. The GPR records electromagnetic waves reflected from real buried remains or boundaries between geological or archaeological layers that differ significantly in electrical properties. The magnetic method, in turn, records the anomalies of the magnetic field intensity resulting from the underground concentration of ferromagnetic minerals, hence it is ideal for searching structures filled with organic matter or burning material. However, a separate usage of these methods does not guarantee a full picture of archaeological structures that are preserved underground. Only the application of the ADCM allowed for a comparison of GPR and magnetic amplitude data reading, following which a spatial image (2D and 3D) of the preserved archaeological structures and the geological stratigraphy of the Santa Maria site were obtained.
Źródło:: Studia Quaternaria; 2020, 37; 79-90
1641-5558
2300-0384
Pojawia się w:: Studia Quaternaria
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 12.

Tytuł:: The Castle Hill in Biecz and fortified stronghold in Kobylanka. The results of interdisciplinary research from 2019
Autorzy:: Kocańda, Paweł
Pisz, Michał
Rajchel, Bernadetta
Filipowicz, Michał
Powiązania:: https://bibliotekanauki.pl/articles/2085857.pdf
Data publikacji:: 2020
Wydawca:: Uniwersytet Rzeszowski. Instytut Archeologii Uniwersytetu Rzeszowskiego. Muzeum Okręgowe w Rzeszowie
Tematy:: castle
medieval archaeology
archaeological geophysics
ground-penetrating radar
magnetometry
stronghold
Opis:: In 2019, new research was initiated at two archaeological sites located on the Ropa River, in Gorlice County, in the southeastern part of Małopolska Province. The first site was the Castle Hill in Biecz, and the second one was the fortified stronghold in Kobylanka. The research consisted of three stages. Firstly, extensive archival and library queries were conducted in order to gather basic information about both sites. Secondly, surface research was performed in order to collect any movable monuments. During the third stage, a reconnaissance by means of GPR, electrical resistivity imaging and geo-magnetic survey was carried out. These provided plenty of new valuable information on the spatial layout of both sites. In the case of the Castle Hill, the analysis of the discovered anomalies allowed for the interpretation of some of the finds as remnants of the brick elements of the castle, e.g. the tower, which corresponds with the plan from 1877. The results of the analyses of the anomalies from the fortified stronghold in Kobylanka, with its ramparts made of stone and earth as well as inner circular housing, were far more ambiguous. Its chronology may date back to the early Middle Ages
Źródło:: Analecta Archaeologica Ressoviensia; 2020, 15; 139-163
2084-4409
Pojawia się w:: Analecta Archaeologica Ressoviensia
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 13.

Tytuł:: Complex analysis of GPR signals for the delineation of subsurface subtle features
Autorzy:: Akinsunmade, Akinniyi
Tomecka-Suchoń, Sylwia
Pysz, Paweł
Powiązania:: https://bibliotekanauki.pl/articles/184601.pdf
Data publikacji:: 2019
Wydawca:: Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:: Ground Penetrating Radar (GPR)
electromagnetic energy
signal attributes
soil
compaction
Opis:: In this paper, complex signal analyses of ground penetrating radar (GPR) field data over an area of farmland in Krakow were interpreted alongside the basic filtered field data. The farmland was simulated with varying degrees of soil compaction induced by tractor movement. The focus of the study was the delineation of inherent characteristics of media through which the electromagnetic energy travelled. Fourteen GPR profiles were acquired from the area. The field data were subjected to pre- and post-processing prior to its the presentation and interpretation. Advance analysis operations on the field data which resorted in different attributes reveal more about the effects of the compaction on the soil than indicated by the basic filtered field data. Better resolution of subsurface layers boundary and lateral variation in the physical properties of the traversing media were well elucidated. The results have demonstrated that an advanced signal processing such as used in the study has ability to depict subtle characteristics of the propagating media.
Źródło:: Geology, Geophysics and Environment; 2019, 45, 4; 257-267
2299-8004
2353-0790
Pojawia się w:: Geology, Geophysics and Environment
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 14.

Tytuł:: Effect of shallow subsurface flow pathway networks on corn yield spatial variation under different weather and nutrient management
Autorzy:: Morgan, B.J.
Daughtry, C.S.T.
Russ, A.L.
Dulaney, W.P.
Gish, T.J.
Pachepsky, Y.A.
Powiązania:: https://bibliotekanauki.pl/articles/2082501.pdf
Data publikacji:: 2019
Wydawca:: Polska Akademia Nauk. Instytut Agrofizyki PAN
Tematy:: subsurface flow pathways
ground penetrating radar
geographic weighted regression
corn yield
Opis:: Ground water availability can be a major spatially variable factor of crop yields. In soils with the infiltration-restricting layer, ground water can be organized in the network of channels that conduct water laterally in wet periods and become water storage and water subsidy sources for plants in dry periods. The objective of this work was to quantify the relationships between the distances to the subsurface flow pathway network and corn yield for different weather conditions and nutrient management. Corn yield was monitored across the manured and chemically fertilized fields at the USDA-ARS OPE3 experimental site in Maryland. Data were collected during dry, normal, and above normal years in terms of the amount of precipitation from planting to physiological maturity. The subsurface flow pathway network was delineated using ArcGIS from data on topography of the infiltration-restricting layer found mostly at depths between one and three meters. The geographically weighted regression was used. Adjusted determination coefficients of regressions ranged from 0.485 to 0.655. Decrease of the adjusted determination coefficients from a dry to normal year and an increase from the normal to wet year was found. Factoring the subsurface flow pathway network influence into crop management can be an important component of precision farming strategies.
Źródło:: International Agrophysics; 2019, 33, 2; 271-276
0236-8722
Pojawia się w:: International Agrophysics
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 15.

Tytuł:: Geometryzacja form zjawisk krasowych na podstawie badań metodą georadarową
Geometrization of karst phenomena based on GPR research
Autorzy:: Ortyl, Łukasz
Powiązania:: https://bibliotekanauki.pl/articles/2075956.pdf
Data publikacji:: 2019
Wydawca:: Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:: metoda georadarowa
kras
wapienie
jaskinia
pustki
modelowanie danych
naziemne skanowanie laserowe
ground penetrating radar
GPR
karst
limestones
cave
voids
finite differential time domain
FDTD
terrestrial laser scanning
TLS
Opis:: Recognition of subsoil in areas threatened with discontinuous deformation associated with the existence of natural and mining voids can be implemented by various geophysical methods. The purpose of such research, apart from confirming the existence of voids, is to determine their spatial extent. This is not a simple issue, regardless of the geophysical method used. This paper discusses the possibilities of geometrization of karst phenomenon localization using the ground penetrating radar (GPR) method by the example of a karst cave as a natural void. The area of data acquisition is located on limestone formations with numerous karstforms. The study object is the main hall of the karst cave with a height of up to 3 m, located at a depth of 3 to 7 m below the surface. Such location and shape of the subsurface structure made it possible for the author to perform a wide range of research. Their original aspects are presented in this paper. The shape of the hall was obtained using terrestrial laser scanning (TLS). The GPR data were obtained employing the 250 MHz shielded antenna that was directly positioned using a robotized total station with the option of automatic target tracking. Thus, the GPR and geodetic data were immediately achieved in a uniform coordinate system. The accuracy of the data obtained in this way is discussed in this paper. The author’s original algorithm for processing of GPR data into a point cloud is presented. Based on the results obtained, it was possible to compare the GPR signal, which represents the shape of the cave hall, in relation to its image in the form of a point cloud from terrestrial laser scanning. A unique part of this paper is the selection of filtration procedures and their parameters in optimal GPR data processing, which were widely discussed and documented in a way beyond the standard filtration procedures. A significant contribution is the analysis that was carried out on the data obtained in the field and on the model data generated using the finite difference method. Modeling was carried out for two wave sources: exploding reflector and point. The presented methodology and discrimination between the actual shape of the cave, GPR field data and model data made it possible for the author to draw many conclusions related to the possibilities of shape geometrization of the subsurface voids determined by the GPR method.
Źródło:: Przegląd Geologiczny; 2019, 67, 4; 252--269
0033-2151
Pojawia się w:: Przegląd Geologiczny
Dostawca treści:: Biblioteka Nauki

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