Published April 12, 2024 | Version 1.0
Dataset Open

Etna tiltmeter data from CBD station during 2008-2022 (sampling rate 15 min)

  • 1. Istituto Nazionale di Geofisica e Vulcanologia (INGV)
  • 1. Istituto Nazionale di Geofisica e Vulcanologia (INGV)

Description

The dataset contains tilt data recorded along the north-eastern flank of Etna from 2008 to 2022. The instrument used is a bubble tiltmeter (LILY Model designed by AGI) and is placed inside a borehole, at a depth of 10 m. The station is identified by the acronym CBD (Case Bada) and is located at an altitude of 1420 m asl, belonging to the Etna tilt network, run by INGV-Osservatorio Etneo. The tilt station was built in 1994 and subsequently modified in 2008. The dataset includes the values of the ground inclination measured every 15 minutes along the two components (tilt x and tilt y, with orientation N220E° and N130E° respectively and measured in microradians); the voltage of the power supply in volts (Ten_Batt); the temperature in degrees at the datalogger (temp_cr10); the atmospheric pressure in millibars (barometer); the temperature in degrees at the depth of the sensor (temp_tilt); the direction of the magnetic compass (north_tilt). The station is powered by solar panels, so depending on the weather conditions, there may be periods when the sensor does not record. In addition, during technical interventions for shorter or longer periods, the recording can be interrupted and the data may therefore show gaps.

Methods (English)

The borehole instruments use a high-precision electrolytic bubble sensor, which consists of a bubble in an electrolytic fluid that moves when the instrument tilts, in accordance with the ground deformation. The electrodes placed at the ends of the sensor detect resistance variations every time the fluid moves. A circuit converts these changes into DC signals, linearly proportional to the angular rotation.

Files

CBD_tiltmeter_data.csv

Files (182.1 MB)

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Additional details

Time Series

CBD_tiltmeter_data
Time series data file
Start time: 2008-05-21 08:30:00.000, End time: 2022-12-31 23:45:00.000, Sampling: 900s
Field Name Type Unit Description
ten_batt double precision voltage of the power
temp_CR10 double precision temperature in degrees at the datalogger
tilt_x_Avg double precision values of the ground inclination (x component)
tilt_y_Avg double precision values of the ground inclination (y component)
temp_tilt double precision temperature in degrees at the depth of the sensor
nord_tilt double precision direction of the magnetic compass
barometro double precision atmospheric pressure in millibars