The most popular is MED-NET, which covers all the mediterranean sea with its observation points. The shown map shows the observation points in the mediterranean sea. For further information about this net being part of the Italian Geophysical National Institute, you can visit the official site. This research is based, for a part of the signals, on seismic data given from this net. The MED-NET net puts on web for every single
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event the geographic map with the geographic points where the phenomenon has been found with the seismic observation points marked with the even geographic seismic direction finding (triangulation). In the research only episodes where the close BNI observatory finds the seismic mechanic wave have been considered. The med net is not the only one to do this service. At a local level, in fact other nets exist which can make a study occasion about even lighter seismic events which happen close to my qth. From these net generally are diffused also data which are more difficult to find on other national nets. This is the case of the IGG seismic net. The map shown beside, shows the stations disposition. My qth, indicated by the red arrow, is practically in the middle of the stations of this net. In this case also, data are available on web at url: In order to give an idea of the seismically of the zone, you can think of the week from 20/8/2001 to 26/8/2001, in the area shown on the map that 19 seismic event have been recorded. Once chosen the band frequency to monitor, you have to make a choice for the best antenna to receive those signals. In this gap of frequency there are different utilized antenna systems: all very effective, even if with very different results from signal to signal. From the past researches we know that 82 Hz signals for submarine in immersion, are very well received by marconian antennas, discretely with...
This project fits more for custom made battery casing that can have more space to hide things inside. This switch with few alterations can be used for any other project as well but is designed based on e-bike needs! This project use a clever functionality of....
The circuit described here uses ultrasonic oscillations and operates based on the propagation velocity of these oscillations in the air. Thus, we can easily determine the distance of two points if the time within which the wave travels this distance is....
Sometimes the precious metals are hidden too deep and are not detected except with complicated devices. In many cases, however, small pieces of precious metal buried near the surface can be detected by relatively simple means. Everyone is very attractive to....
Many times for various reasons we forget or can not water the plants that we have in our homes. And many humidity sensors units just notify us with a beeping sound or with a flashing light, that the pot needs watering. But what if we are away from home? This....
The principle behind a metal detector is really very simple. Proof of this is the circuit that follows, in which it proves that the construction of a metal detector can be done in the minute, with few components that we find very easily everywhere. With the....
The sub-harmonic bass generator is a sound producing unit for guitars. The sound it produces looks very much like that of the bass guitar. The octave generator is sometimes quite unusual since it does not produce any of the usual ways of coloring the sound,....
In the past the sounding (sea bottom measurement) was done with the "bullet", that is, with a heavy lead object that the seamen plucked into the sea hung from a calibrated rope. As soon as the "bullet" reached the bottom, the depth appeared directly from the....
This Amplifier was designed to have the following specifications: Distortion less than 0.1% at full power of 100W even at 20KHz. Power has to be attributed to an extended bandwidth. The output transistors must be protected against short circuits. The power....
A series of LEDs serve to alert the gardener when plants need water. Using two conventional digital integrated LEDs and a series of LEDs, we make a very useful device for gardening. The device detects the amount of water in the pot and alerts the grower.....
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