Results 21 to 30 of about 5,564 (314)

Generalization of Soundings across Scales: From DTM to Harbour and Approach Nautical Charts

ISPRS International Journal of Geo-Information, 2020
This paper presents an integrated digital methodology for the generalization of soundings. The input for the sounding generalization procedure is a high resolution Digital Terrain Model (DTM) and the output is a sounding data set appropriate for ...
Andriani Skopeliti, Leda Stamou, Lysandros Tsoulos, Shachak Pe’eri   +3 more
doaj   +1 more source

Adaptive depth control algorithm for sound tracing

Journal of the Korea Computer Graphics Society, 2018
Eun Jae Kim, Woonam Chung, Woo Chan Park, Juwon Yun, Youngsik Kim   +4 more
openalex   +2 more sources

Influence of the rock massif physical properties variability on the localization of its disturbances with GPR [PDF]

E3S Web of Conferences
An integrated approach to studying the influence of the physical properties of a rock mass on the localization of its disturbances by GPR sounding is considered.
Dyakov Andrey, Kalashnik Anatolii
doaj   +1 more source

Acoustic Mapping of Gas Stored in Sediments of Shallow Aquatic Systems Linked to Methane Production and Ebullition Patterns

Frontiers in Environmental Science, 2022
Bubble-mediated transport is the predominant pathway of methane emissions from inland waters, which are a globally significant sources of the potent greenhouse gas to the atmosphere.
Lediane Marcon, Lediane Marcon, Klajdi Sotiri, Tobias Bleninger, Tobias Bleninger, Andreas Lorke, Michael Männich, Stephan Hilgert   +7 more
doaj   +1 more source

Localized features in subsoil investigation and implications for foundation works: Case study from Ilora, southwestern Nigeria

ITEGAM-JETIA, 2022
Subsoil investigations involving geoelectric depth sounding, boring and sampling with in situ and laboratory tests were carried out at an interchange location in a typical basement complex terrain of Ilora, Southwestern Nigeria with the objective of ...
Akintunde Akinola Oyedele, Joshua T. Akinwamide, Segun N. Ogunyebi   +2 more
doaj   +1 more source

Echo Sounding and Depths [PDF]

Nature, 1930
IT is to be feared that the note on page 473 of NATURE of Mar. 22 may lead to some misunderstanding and to conclusions unfavourable to the echo method of sounding. Dr. Maurer states that out of 254 comparative soundings made by wire and echo in water over 2000 metres deep no less than 36 showed differences exceeding 100 metres and that the maximum ...
openaire   +1 more source

Determination of Groundwater Using Geoelectric Methods: Schlumberger Configuration in Rokan Hulu Regency

Jurnal Ilmiah Pendidikan Fisika Al-Biruni, 2019
This study aimed at detecting the presence of groundwater in Masda Makmur Village, Rambah Samo District, Rokan Hulu Regency, using the Schlumberger configuration geoelectric method.
Yeza Febriani, Riza Ari Rohman, Azmi Asra, Mohammad Apriniyadi, Donata Nariswari Wahyu Wardani   +4 more
doaj   +1 more source

COMPARISON AND ANALYSIS OF THINNING METHODS FOR MULTI-BEAM SOUNDING DATA [PDF]

The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2020
Marine surveying and mapping is the basis of all marine development activities, and underwater topographic survey is one of the essential tasks of it. The multi-beam sounding system can give dozens or even hundreds of water depth values in the vertical ...
R. J. Wang, C. P. Li
doaj   +1 more source

High resolution electromagnetic methods and low frequency dispersion of rock conductivity

Annals of Geophysics, 1999
The influence of frequency dispersion of conductivity (induced polarization) of rocks on the results of electromagnetic (EM) sounding was studied on the basis of calculation of electric field of vertical magnetic dipole above horizontally layered ...
V. V. Ageev, B. S. Svetov
doaj   +1 more source

A Mantle Plume Beneath South China Revealed by Electrical Conductivity Obtained from Three-Dimensional Inversion of Geomagnetic Data

Sensors, 2023
A three-dimensional electrical conductivity model of the mantle beneath South China is presented using the geomagnetic depth sounding method in this paper.
Shiwen Li, Yunhe Liu, Jianping Li
doaj   +1 more source