Raw continuous gravimetric dataset (2023–2024) recorded at the Campi Flegrei caldera

This dataset reports the gravity acquisition (2023-2024) recorded by the relative gravimeter, model gPhoneX#116, located inside the “Oasi WWF” building of the Astroni crater (Campi Flegrei caldera, Italy). Station coordinates are as follows: Latitude (WGS84): 40.840085 ° NLongitude (WGS84): 14.159128 ° EElevation: 101 m a.s.l. The files are provided in the “.tsf” format, a “text-oriented format” in use by the TSoft software (Van Camp and Vauterin, 2005). A detailed description of the format is given in the manual of the software (https://seismologie.oma.be/en/downloads/tsoft). Each file contains daily recordings at a sampling frequency of 1 Hz of raw gravimetric data in microGal (1 Gal = 10⁻² m/s²) and 19 more channels with auxiliary data (i.e. atmospheric pressure, ambient temperature…). A header, identified as [COMMENT] in the tsf file, reports the relevant acquisition parameters and calibration constants that, for instance, allow to convert tilts from AD Units to physical Units. Each file contains the following 20 channels: Gravity (µGal): raw gravity record Corrected Gravity (µGal): gravity corrected for tidal effects according to ETGTAB, ocean tide loading, atmospheric pressure effect (-0.3microGal/mbar); Tide (µGal): Tide effects predicted at the site according to ETGTAB; Long Level (LL, AD Units): value of the long level in AD Units. Conversion to physical units can be done using the Long Level Calibration Factor (k, provided in rad/ADU) and Long level set-point (sp in rad) in the header of each file. In particular, AD units are converted to radians by means of the following equation: LL*k+sp Cross Level (AD Units): value of the cross level in ADU. Conversion to physical units can be done using the Cross Level Calibration Factor in the header of each file. The procedure uses the same equation as LL; Ambient Temperature (°C); Sensor Temperature (°C) temperature variations inside the chamber hosting the core sensor Ambient Pressure (mbar); Sensor Pressure (mbar); pressure variations inside the chamber hosting the core sensor Beam Position (AD Units) position of the beam of the reference mass Level Correction (µGal) gravity change due to the tilt according the equation reported in the gPhone manual Drift Correction (µGal): linear drift correction calculated assuming the drift rate reported in the header section; in our case, for calculating the Corrected gravity, the drift correction is disabled; Sensor Pressure Correction (µGal): calculated by multiplying Meter Pressure Correction factor times the sensor pressure channel corrected by Meter Pressure Setpoint. In our case, for calculating the Corrected gravity, the correction is disabled; Barometer Compensation (µGal): pressure correction calculated with a standard admittance of -0.3 microGal/mbar; Ambient Temperature Correction (µGal): disabled in our case, since the calibration factor for converting ambient temperature changes to gravity has not been determined; Meter Temperature Correction (µGal): disabled in our case, since the calibration factor for converting meter temperature changes to gravity has not been determined. Polar Motion Correction (µGal): not calculated and disabled in our case. Ocean Load Correction (µGal): calculated according to FES2004 model Velocity (µ/s): time integration of observed Gravity channel (ch. 1) Position (µ): time integration of Velocity channel (ch. 19)本数据集记录了2023年至2024年间由型号为gPhoneX#116的相对重力仪采集的重力观测数据，观测点位位于意大利坎皮佛莱格瑞破火山口（Campi Flegrei caldera）阿斯特罗尼火山口（Astroni crater）内的世界自然基金会（WWF）绿洲建筑内。 站点坐标如下： 纬度（WGS84坐标系）：40.840085°N，经度（WGS84坐标系）：14.159128°E，海拔：101米（海拔基准面，a.s.l.）。 所有数据文件以".tsf"格式存储，该格式是TSoft软件所采用的"文本导向格式"（Van Camp与Vauterin，2005）。该格式的详细说明可参阅该软件的操作手册（https://seismologie.oma.be/en/downloads/tsoft）。每个文件包含1Hz采样频率的单日原始重力观测数据，单位为微伽（µGal），其中1伽（Gal）=10⁻² m/s²，此外还包含19路辅助数据通道，例如大气压强、环境温度等。 ts文件中以[COMMENT]标识的文件头部分，记录了相关的采集参数与校准常数，例如可用于将倾斜量从AD单位转换为物理单位。 每个文件包含以下20个数据通道： 1. 重力（µGal）：原始重力观测记录 2. 校正后重力（µGal）：依据ETGTAB模型、海洋潮汐负荷以及大气压强影响（-0.3微伽/毫巴）进行潮汐校正后的重力数据 3. 潮汐（µGal）：依据ETGTAB模型预测的站点处潮汐效应值 4. 长水准器（Long Level，LL，AD单位）：长水准器的AD单位读数。可通过每个文件头中提供的长水准器校准因子（k，单位为rad/ADU）与长水准器设定点（sp，单位为rad）转换为物理单位，具体转换公式为：AD单位值 × k + sp 5. 交叉水准器（Cross Level，AD单位）：交叉水准器的AD单位读数。可通过每个文件头中提供的交叉水准器校准因子转换为物理单位，转换公式与长水准器一致 6. 环境温度（°C） 7. 传感器温度（°C）：核心传感器所在舱室内的温度变化 8. 环境气压（mbar） 9. 传感器气压（mbar）：核心传感器所在舱室内的气压变化 10. 光束位置（AD单位）：参考质量块的光束位置 11. 水准校正（µGal）：依据gPhone操作手册中给出的公式计算的、由倾斜引起的重力变化量 12. 漂移校正（µGal）：以文件头中记录的漂移速率计算得到的线性漂移校正量；在本数据集中，计算校正后重力时未启用此项校正 13. 传感器气压校正（µGal）：通过传感器气压校正因子乘以经传感器气压设定点校正后的传感器气压通道数据得到的校正量；在本数据集中，计算校正后重力时未启用此项校正 14. 气压补偿（µGal）：采用标准导纳值-0.3微伽/毫巴计算得到的压强校正量 15. 环境温度校正（µGal）：本数据集未启用此项校正，因为尚未确定将环境温度变化转换为重力变化的校准因子 16. 仪器温度校正（µGal）：本数据集未启用此项校正，因为尚未确定将仪器温度变化转换为重力变化的校准因子 17. 极移校正（µGal）：本数据集未计算且未启用此项校正 18. 海洋负荷校正（µGal）：依据FES2004模型计算得到的校正量 19. 速度（µ/s）：第1通道重力观测数据的时间积分结果 20. 位置（µ）：第19通道速度数据的时间积分结果