Burgi, Pierre-Yves; Tedesco, Dario; Balagizi, C; Cuoco, E; Darrah, T: G-force measurements at Mount Nyiragongo [dataset]. PANGAEA, https://doi.pangaea.de/10.1594/PANGAEA.809305 (unpublished dataset), Supplement to: Burgi, P-Y et al. (submitted): Mount Nyiragongo: An assessment and update of the current eruptive activity. Bulletin of Volcanology
Abstract:
To evaluate the mechanical stress on the volcanic edifice that results from lava lake level variations, we deployed a self-recording, differential capacitance (MEMS Inertial Sensor STMicroelectronics LIS3LV02DQ), 3-axis X6-1A accelerometer (Gulf Coast Data Concepts, LLC) at a distance of ~100m from the center of the Nyiragongo lava lake on freshly erupted lava flows. The device range was used in high (12-bit) resolution mode, which corresponds to a sensitivity of about 1 mg. The device was set to high-sensitivity mode with four additional bits to improve resolution, yet with a much lower signal-noise ratio. Once in position, the accelerometer continuously recorded data for three-day periods in June 2010. The system was oriented so that the X- and Y-axes form a plain parallel to the lava lake. During data collection, we did not attempt to calibrate the precision of the angle because relative G-force measurements were required instead of absolute G-force measurements. To distinguish the tiny accelerations caused by temperature differentials of the atmosphere, from the forces caused by magma movements, the temperature of the X6-1A device was continuously recorded. Temperature variations were corrected for by applying a de-correlation method to the recorded signal. Data was collected at 20 Hz, regrouped into batches that cover 1 hour per observation and associated with one averaged temperature measurement. This method was reproducible because diurnal temperature variations were the main cause for heating and cooling.
Related to:
Burgi, Pierre-Yves; Darrah, T; Balagizi, C; Lwiro, D S; Tedesco, Dario; Allen, J; Simmon, R (2010): Nyiragongo. Bulletin of the Global Volcanism Network, 25(9), 7-10
Coverage:
Latitude: -1.520000 * Longitude: 29.250000
Minimum Elevation: 3469.0 m * Maximum Elevation: 3469.0 m
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | File name | File name | Burgi, Pierre-Yves | |||
| 2 | File content | Content | Burgi, Pierre-Yves | |||
| 3 | File size | File size | kByte | Burgi, Pierre-Yves | ||
| 4 | Uniform resource locator/link to file | URL file | Burgi, Pierre-Yves |
Size:
16 data points