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Aug 24, 2020Open AccessArticle
This paper presents the analysis of temporal variations of the geomagnetic field in the municipality of Macaé, Brazil. Current and historical magnetic field from the IGRF (International Geomagnetic Reference Field) and Gufm1 models were used to construct two-dimensional maps from 1590 to 2019. Analysis of the maps revealed that there was a large decrease in total magnetic field magnitude from around 48,000 nT in 1590 to 23,000 nT in 2019, i.e., a decrease of more than 50%. This decrease was inte...
Oct 10, 2019Open AccessArticle
In this study, a certain zone of Libra oil field of the pre-salt region was se-lected to be analyzed for didactic purposes in order to simulate AVO re-sponses. The region was modeled using seismic data, setting up a typical oil system with source rock (shale), reservoir rock (sandstone), and seal rock (salt). Thus, a set of parameters such as seismic wave velocity, density and Poisson’s ratio for the studied zone w ...
Jul 30, 2019Open AccessArticle
This work presents the geomagnetic characterization of the municipality of Macaé, Brazil. Data from IGRF12 (twelfth edition of International Geomag-netic Reference Field) were used. Through the data collected in a regular grid of 0.1 degrees of the components, north, east and vertical were generated maps of components, inclination, declination, horizontal component and geomagnetic total field. The results showed important relative ...
Apr 29, 2019Open AccessArticle
This work presents the analysis of magnetometric data of an aerial survey conducted in the Rio do Peixe Sedimentary Basin, which is a promising oil producing region in the state of Paraíba, Brazil. The collected aeromagne-tometric data allowed the preparation of maps regarding magnetic anomaly, horizontal and vertical derivatives, analytical signal and Euler Decon-volution that were compared w ...
Aug 23, 2018Open AccessArticle
Self-Organizing
Map (SOM) analysis is used to perform optical characteri- zation of both Aerosol Optical Depth (AOD) and
Angstrom Exponent (AE) retrieved from Moderate-resolution
Imaging Spectroradiometer (MODIS) in relation to Precipitation Rate (PR)
from Tropical Rainfall Measurement Mission (TRMM) over selected East African
sites from 2000 to 2014 and further diagnose climate change over the region if
any. SOM reveals a marked ...
May 21, 2018Open AccessArticle
In this paper we are
performing Spiking and Gap deconvolution on land 2D data; we are applying on the shot and stack
data with operator length (200
ms), while in the gap deconvolution it is used
different gap window (16.24 ms). The quality of output
data is better than input data, and there is homogeneity in the distribution of
frequencies. Also the band width of frequencies is increasing and smoothing spec ...
Dec 19, 2017Open AccessArticle
Intuition of many
different unsolved problems and questions remains the “sorest troubles” in
basis and applied sciences particular in physics today. Also presented physical
models doesn’t describe world’s
framework aright and these make lots of defects to understand sciences and
solve scientific problems. Therewith no one can formulate the complicate relation(s)
between all existences’ and sciences’ components. However, ...
Nov 30, 2017Open AccessArticle
Makran is an active subduction zone with a lower activity rate in comparison with other similar subduction zones. In the extent of Makran seismotectonic province, from coastline up to 70 Km distance onshore, the earthquakes are shallow whilst further inland, focal depths of the earthquakes are deeper. Con-sidering the low seismic activity rate, lack of adequate and reliable seismic data and uncertainty about earthquake hazard cont ...
Nov 22, 2017Open AccessArticle
Here design of electromagnetic spider webs imitating the actual spider web and trigram cropland structure, using the principle of bionics will combine Telluric Current, electricity, Atmospheric electronic, E-compass, 4G-GSM wave Switch, low and high frequency wireless transmitting and receiving devices. WIFI devices Switch. In theory, the electromagnetic spider webs induction method in Maxwell equation is adopt ...
Sep 14, 2017Open AccessArticle
In this document, with the purpose of strengthening more in the knowledge of the previous events on the earthquakes, the possible connection between
natural voltage and electromagnetic energy emanating from the inner layers of
the Earth and the seismic activity in the Mexican seismic coastal border, is
evaluated, through an indirect estimation of the statistical analysis of
natural water conductivity data (μS/cm) and the seismic a ...
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