What is a Seismometer?
An earthquake (also known as a quake, tremor or temblor) is the shaking of the surface of the Earth resulting from a sudden release of energy in the Earth's lithosphere that creates seismic waves. Earthquakes can range in intensity, from those that are so weak that they cannot be felt, to those violent enough to propel objects and people into the air and wreak destruction across entire cities.
At the Earth's surface, earthquakes manifest themselves by shaking and displacing or disrupting the ground. When the epicenter of a large earthquake is located offshore, the seabed may be displaced sufficiently to cause a tsunami. Earthquakes can also trigger landslides and, occasionally, volcanic activity.
In its most general sense, the word earthquake is used to describe any seismic event—whether natural or caused by humans—that generates seismic waves. Earthquakes are caused mostly by rupture of geological faults but also by other events such as volcanic activity, landslides, mine blasts, and nuclear tests. An earthquake's point of initial rupture is called its hypocenter or focus. The epicenter is the point at ground level directly above the hypocenter.
A seismometer is an instrument that responds to ground noises and shaking such as caused by earthquakes, volcanic eruptions, and explosions. They are usually combined with a timing device and a recording device to form a seismograph. The output of such a device—formerly recorded on paper or film, now recorded and processed digitally—is a seismogram. Such data is used to locate and characterize earthquakes, and to study the Earth's internal structure.
Seismometer App measures how an earthquake is felt in a certain area, based on the relative effects of an earthquake on structures and surroundings. Seismometer app uses scales that correspond to movement intensity and not magnitude.
This app will run at your command and set an appropriate alarm so to inform you that an earthquake is occurring. It is a really handy function for places with a lot of earthquakes, and really useful especially when sleeping when every little second counts for your own safety.
An app that can possibly save your life.
PROTECTIONSeismometer will alert you of an earthquake as you can feel it exactly where you are.
LIFESAVERWhile at sleep? Will wake you up and save crucial seconds of action. A true lifesaver.
ALGORITHMA special designed algorithm senses the motion of the device and converts it into earthquake movement intensity.
DESIGNContinually improving design, to make it easier and handier.
EARTHQUAKE SCALESCycle through the 4 major earthquake scale: USGS (USA), Shindo (Japan), Liedu (China), Mercalli (World).
HELP ON SCALESEvery scale has its shaking table. Please advise it before choosing an intensity level.
INTENSITY LEVELSSet the level of perceived shaking (alarm) every scale has to offer.
ALARMInstant alarm with audio & visual feedback. Press TEST button to see what happens.
NOTIFICATIONSet up this one to get a reminder once a day to open the app. Or disable it.
TIPThis one is really useful for further development. This app is free with no Ads, so give your help to keep it free.
RATEIf you find Seismometer useful, just give it a nice comment. It really helps.
MORE TO COMEIntensity scales and further customization are on the way.
HELPHere you can find anything about Seismometer.
SUPPORTIf FAQ is not enough, we got you covered. Send in your message directly to Support and soon you will get a response.
it works very well, very useful. Thanks.
Awesome user interface.
If you still have a question contact us via Seismometer's Settings.
A special algorithm translates movement into the 4 widely used earthquake scales.
- Select Scale
- Press "?" button to read about the specific scale and its levels of intensity
- Press "Test" to see and hear the alarm
- Adjust your desired alarm level of intensity by using "+" & "-" buttons
- It is recommended - but not obligatory - to enable airplane mode and disable wifi and bluetooth
- Leave device on a steady surface like the floor
- Press Play button to start
Intensity movement scales are human oriented and easier to understand and use.
iPhones & iPads are the safest devices you can use, but there are rare cases where some equipment always connected to chargers malfunctioned. Especially iPads can be used as kiosks - meaning always connected to power. In any case use your equipment at your own risk as Seismometer app can not be responsible for any battery or device malfunction.