Vibration Meter, seismograph vs GhostVibe Lite

Vibration meter is an app called seismograph or seismometer, which measures the strength of vibration, quakes, earthquakes, vibrations of the human body or any other objects around you. Our app allows for detecting and recording of seismic waves generated by earthquakes, volcanic eruptions, avalanches and other sources of vibration and shocks. Accelerometer in your mobile phone is used for detection of vibrations and measurement analysis. Graph presents a record of the ground motion at a measuring point. Ground movement or an object is presented as a function of time in the three Cartesian axes, with the z axis perpendicular to the Earth's surface and the x- and y- axes parallel to the surface. Mercalli intensity scale is a seismic scale used for measuring the intensity of an earthquake. It measures the effects of an earthquake and it is distinct from the moment of magnitude. Richter Scale assigns a magnitude number to quantify the energy released by an earthquake. Peak Ground Acceleration (PGA) is equal to the maximum ground acceleration that occurred during earthquake shaking at location. PGA is equal to the amplitude of the largest absolute acceleration recorded on an accelerogram at a site during a particular earthquake. In this app we use Instrumental Intensity Scale (developed by The United States Geological Survey) which maps peak ground acceleration and peak ground velocity on an intensity scale similar to the felt Mercalli Scale. These values are used to create shake maps by seismologists on around the world. Mercalli Intensity Scale distinguishes the following levels of vibration and impact damage: I. Instrumental - Not felt. Recorded by seismographs. II. Weak - Felt only on top floors of high buildings. III. Slight - Felt indoors, like a passing light truck. IV. Moderate - Windows, doors rattle. Like passing train. V. Rather Strong - Felt by all. Small objects upset. VI. Strong - Books off shelves. Trees shake. Damage. VII. Very Strong - Difficult to stand. Buildings damaged. VIII. Destructive - Significant damage. Trees broken. IX. Violent - General panic. Serious damage. Cracks. X. Intense - Most buildings destroyed. Rails bent. XI. Extreme - Rails bent greatly. Pipelines destroyed. XII. Catastrophic - Near total damage. This app allows you monitor and share the results of your measurements with other users. Measure and monitor all vibration and shocks using smartphone or tablet!

Seismograph / Seismometer vibration detection. Detect vibration and movement using the sensors built into your smart phone or tablet. Features include: + 4 different visualisations, including seismograph/seismometer, bulls-eye, vortex and meter. + Adjustable sensitivity. + No adverts or in-app-purchases. No internet connection needed. No unnecessary permissions required. INSTRUCTIONS Place your device on a flat, solid surface. Any vibration or movement will be detected so it is useful to detect earthquakes, seismic activity, etc. Your device must have accelerometers to work with GhostVibe Lite - which most mobile Apple devices have. Live data is visible on the screen and is updated roughly 30 times a second. Tap the screen to pause the app and access the settings. You can choose one of 4 visualisations for the live vibration data. LITE VERSION This lite version of GhostVibe does NOT contain logging. The full version is available from the store and includes: + Saves daily logs which you can view later. + Export daily logs in CSV format to other apps, e.g. your favourite spreadsheet application. SENSITIVITY You can adjust the sensitivity of the displayed data by tapping the cog icon. Dragging the bar left will make it less sensitive, dragging the bar right will make it more sensitive. Some devices have more sensitive sensors than others. PERMISSIONS This app does not show adverts. It does no contain any in-app-purchases. It does not require an internet connection. The only permission it needs is for storing your settings.