Results 41 to 50 of about 33,274 (166)

Performance Evaluation of Machine Learning Algorithms for Urban Pattern Recognition from Multi-spectral Satellite Images

open access: yesRemote Sensing, 2014
In this study, a classification and performance evaluation framework for the recognition of urban patterns in medium (Landsat ETM, TM and MSS) and very high resolution (WorldView-2, Quickbird, Ikonos) multi-spectral satellite images is presented.
Marc Wieland, Massimiliano Pittore
doaj   +1 more source

Long Short-Term Memory Recurrent Network Architectures for Electromagnetic Field Reconstruction Based on Underground Observations

open access: yesAtmosphere
Deep underground laboratories offer advantages for conducting high-precision observations of weak geophysical signals, benefiting from a low background noise level.
Yixing Tian, Chengliang Xie, Yun Wang
doaj   +1 more source

Improved Deorientation Processing for Polarimetric SAR Data Using a Phenomenological Approach

open access: yesIEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing
Polarimetric synthetic aperture radar data can be used to retrieve structural and textural information of the surface and is widely used in land cover classification.
Reza Bordbari, Andrew J. Hooper
doaj   +1 more source

“Earthquakes and Buildings” [PDF]

open access: yesNature, 1884
PROF. JOHN MILNE, of Tokio, refers in an article under this heading (NATURE, vol. xxix. p. 290) to buildings in Caracas, which are low, slightly pyramidal, have flat roofs, and are bound along their faces with iron. Being for more than twenty years a resident of this city, I hope I may be credited with knowing something of its architecture, and as such
openaire   +1 more source

Experimental Study on Long Short-term Memory Networks for Identifying P-wave Primary Phase

open access: yesCT Lilun yu yingyong yanjiu
Identifying primary phases of seismic waveforms is a routine task in seismic data processing. Owing to the low efficiency of manual identification and the influence of human subjective factors, many methods for the automatic identification of the primary
Tianzhe WANG   +3 more
doaj   +1 more source

First-Arrival Tomography for Mountain Tunnel Hazard Assessment Using Unmanned Aerial Vehicle Seismic Source and Enhanced by Supervirtual Interferometry

open access: yesRemote Sensing
Preliminary tunnel surveys are essential for identifying geological hazards such as aquifers, faults, and karstic zones. While first-arrival tomography is effective for imaging shallow anomalies, traditional seismic sources face significant limitations ...
Jun Zhang   +6 more
doaj   +1 more source

Quasi-real-time earthquake relocation and monitoring in the northeastern Noto Peninsula

open access: yesEarth, Planets and Space
The seismicity rate markedly increased in the northeastern Noto Peninsula of Ishikawa Prefecture around the end of 2020, with an Mw6.2 event on 5 May, 2023, followed by many aftershocks.
Ryuta Matsumoto, Keisuke Yoshida
doaj   +1 more source

EARTHQUAKE, CAUSES OF EARTHQUAKE

open access: yes
In this article, general information about earthquakes, their types, classification. Earthquake conditions above and below the ground are classified. The article is intended for the requirements of labor protection and technical safety directions, labor protection and safety specialists, and general readers.
openaire   +1 more source

Discrete radiation sources of the 2024 Noto Peninsula earthquake: linking teleseismic pulses and near-field observations

open access: yesEarth, Planets and Space
Understanding the rupture process of large earthquakes is critical; however, standard rupture process inversions require stabilizing constraints, which can obscure which features are genuinely required by the data.
Keisuke Yoshida, Taisuke Yamada
doaj   +1 more source

Quality assessment of daily GNSS coordinate time series from the SoftBank proprietary reference network

open access: yesEarth, Planets and Space
In recent years, earth science disciplines have begun to rely heavily on geospatial data to determine crustal deformation associated with earthquakes and volcanic activity. Therefore, having adequately high-resolution data is essential. In this study, we
Yusaku Ohta, Miku Ohtate
doaj   +1 more source

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