Low-degree toroidal modes from the Sumatra-Andaman event observed by superconducting gravimeters

Xu, Chuang; Yu, Hangtao; Jian, Guangyu; Deng, Shiqi; Zhou, Boyang; Wu, Yihao

doi:10.1016/j.geog.2019.07.002

Cited by 2 publications

(2 citation statements)

References 21 publications

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“…The statistical significance of wavelet power can be evaluated relative to the null hypothesis that the signal is generated by a stationary process with a given background power spectrum. Most of geophysical time series have obvious red noise characteristics, which can be well simulated by first‐order autoregressive (AR1) process (Xu et al., 2019). The Fourier power spectrum of an AR1 process is given by Allen and Smith (1996).…”

Section: Resultsmentioning

confidence: 99%

A Reconstruction of Total Solar Irradiance Based on Wavelet Analysis

Lei

2021

Earth and Space Science

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The total solar irradiance (TSI) refers to the sum of the solar electromagnetic radiation energy of all wavebands reaching the top of the earth's atmosphere per unit area in unit time at the average distance between the sun and the earth (Biktash & Lilia, 2017). Although the solar radiation energy received by the earth is only one in two billion of the total radiation energy from the sun to the space, but it is the main energy source of the earth's atmospheric movement, it is the most important energy source of the earth's atmospheric movement and an important external driving factor of global climate change (Haigh, 2007;Kren, 2015;Solanki et al., 2013). Before Hickey-Frieden cavity radiator (HF) was used to observe the solar radiation in October 1978, TSI was regarded as a constant due to the low accuracy of ground observation equipment, so it was called "solar constant." Since HF was launched, TSI has been continuously observed by several radiometers. Due to the high accuracy of these space radiometers, it is recognized that the solar radiation varies from several minutes to several decades (Kopp, 2016). TSI produces the earth's radiation environment and affects the earth's temperature and atmosphere, even a small change in TSI will have a profound impact on the earth's climate (

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Section: Resultsmentioning

confidence: 99%

A Reconstruction of Total Solar Irradiance Based on Wavelet Analysis

Lei

2021

Earth and Space Science

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“…A recent study by Cui et al (2018) analyzes the time variability of free core nutation (FCN) period based on several IGETS stations, while Sun et al (2019) re-analyze the Earth's background free oscillations using various SG data sets. Xu et al (2019) investigated the Earth toroidal modes after Sumatra-Andaman earthquakes using various SGs. Karkowska and Wilde-Piórko (2019) have used raw gravity data from IGETS stations to study long-period surface waves.…”

Section: Scientific Applications Of Igets Datamentioning

confidence: 99%

Achievements of the First 4 Years of the International Geodynamics and Earth Tide Service (IGETS) 2015–2019

Boy

Barriot

Förste

et al. 2020

International Association of Geodesy Symposia

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We present the activities and improvements of the International Geodynamics and Earth Tide Service (IGETS) over the last four years. IGETS collects, archives and distributes long time series from geodynamic sensor, in particular superconducting gravimeter data currently from more than 40 stations and 60 different sensors. In addition to the raw 1s and 1-min gravity and atmospheric pressure data (Level 1), IGETS produces end-user products on different levels. These include gravity and atmospheric pressure data corrected for major instrumental perturbations and ready for tidal analysis (Level 2). Since 2019, IGETS provides gravity residuals corrected for most geophysical contributions (Level 3) which can be used directly for geophysical applications without any expert knowledge in the processing of gravimetric time series.

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Low-degree toroidal modes from the Sumatra-Andaman event observed by superconducting gravimeters

Cited by 2 publications

References 21 publications

A Reconstruction of Total Solar Irradiance Based on Wavelet Analysis

A Reconstruction of Total Solar Irradiance Based on Wavelet Analysis

Achievements of the First 4 Years of the International Geodynamics and Earth Tide Service (IGETS) 2015–2019

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