The Chi-Chi Earthquake of 1999, a devastating seismic event that struck Taiwan, remains a significant focal point for earthquake research due to its complex geological implications and profound societal impacts. This abstract provides a comprehensive overview of the geology and detailed analysis of the Chi-Chi Earthquake, encompassing its seismological, tectonic, and environmental aspects. The Chi-Chi Earthquake occurred on September 21, 1999, with a moment magnitude (Mw) of 7.6. Full abstract in supporting file.

The Jiji earthquake, also referred to as the Chi-Chi earthquake, holds a significant place in Taiwan's history as the second deadliest seismic event, occurring on September 21, 1999, at 01:47 local time (or 20th September 1999, 17:47 UTC). Its aftermath prompted the establishment of National Disaster Prevention Day on September 21, a crucial initiative aimed at fortifying public awareness and readiness for natural disasters through drills and education. Notably, aftershocks persisted for an extended period, finally abating in June 2000. This abstract encapsulates a thorough review and analysis of the distinctive features and ramifications of the Jiji earthquake. With a magnitude of 7.7Mw, it emerges as the most formidable seismic occurrence within the 1994-2004 timeframe, catalyzing a notable surge in seismic activity for the year 1999. Although precise depth characteristics remain unspecified, its shallow nature facilitated a substantial transfer of energy to the Earth's surface. The onset of the earthquake was characterized by an abrupt initiation, coupled with the emergence of a pronounced surface wave around the 100-second mark. Crucially, the seismic patterns observed were found to closely align with the prevailing tectonic configuration of the underlying fault systems. To conduct this comprehensive review, an array of analytical tools was employed. Spectragram analysis offered insights into spectral content, enabling a nuanced understanding of the earthquake's frequency components. Histograms provided a visual representation of frequency distributions, aiding in the identification of key seismic features. Additionally, scatter plots were instrumental in discerning correlations and trends within the seismic data. Collectively, these tools facilitated a thorough examination of the distinctive characteristics and behavior of the Jiji earthquake, shedding light on its seismic impact and contributing to a broader understanding of seismic events in tectonically active regions. This review not only serves to commemorate the historical significance of the Jiji earthquake but also underscores the imperative of proactive disaster preparedness and mitigation measures in regions prone to seismic activity.

The analysis of seismic catalogs is a very important tool to understand the internal dynamics of volcanoes and their activity processes. In areas of high seismicity such as El Salvador, the study of seismic catalogs can provide important information for early warning by recognizing behavioral patterns of seismicity or the baseline of activity, however, for the studies to be accurate, seismic catalogs They must have good data quality.

The purpose of this work is to briefly analyze the seismicity that has occurred in the last 50 years in a sector in the northern region of Argentina, where the presence of accumulation of earthquakes is observed in a small area of 20,000 km2. Their spatial and temporal location will be studied. This area has the particularity of being the location of several Lithium extraction projects. In addition, an analysis of an event with a magnitude of 6.3 Mw that occurred on November 30, 2020 was also carried out using seismograms and spectrograms at a station located at a distance from the study area. This signal analysis will allow us to know with what energy the seismic signal reaches the surface directly, and correlate it with the possibility of impact of the industrial sites located in the environment.

On September 8, 2023, a 6.8 Mw earthquake occurred in Morocco, and caused almost 3,000 fatalities. This is why the study of these events is important to improve our understanding of seismic hazards. This small investigation seeks to observe the difference between high-period signals and low-period signals, both in the time and frequency domains, in a filtered and unfiltered seismogram. It is displayed on the seismogram without filtering all signals from low to high frequencies. However, in filtering it is observed how high frequencies disappear and low frequencies intensify.

The seismic investigation at hand constitutes a comprehensive study centered around the 2017 Kos earthquake near the island of Kos in Greece. Marked by a formidable magnitude of approximately 6.7 on the Richter scale, this seismic event had a profound regional impact, resulting in significant damage and shaking the foundations of the affected areas. At its core, this analysis relies on the adept utilization of advanced data processing techniques and leverages the robust capabilities of the ObsPy library. These integrated tools empower us to delve deeply into the intricate seismological characteristics, encompassing the detailed study of seismic waveforms and spectrograms. This exploration sheds light on the nuanced properties of the seismic waves, unveiling a richer understanding of their underlying nature. A pivotal feature enhancing our analytical approach lies in the adaptability of customizable file paths, offering a flexibility that significantly enhances the code's versatility. This adaptability allows seamless integration with diverse data directories, promoting more efficient workflows for analyzing seismic data. The study's significance extends beyond a singular seismic event investigation, offering valuable insights into the broader realm of seismic data analysis. In delving into the depths of this seismic event, we uncover layers of complexity that extend beyond a mere assessment of its magnitude. The seismic waves that emanate from the epicenter encapsulate a wealth of valuable information, each wave resonating with unique data that can unveil the narrative of the earth's movements during this event. Furthermore, the spectrograms derived from the seismic data provide a visual representation of the wave frequencies over time. This graphical representation offers a potent tool for analyzing the spectrum of frequencies involved in the seismic event, potentially leading to breakthroughs in understanding the geological conditions and the mechanisms triggering such seismic events. The utilization of the ObsPy library in this analysis exemplifies the role of cutting-edge technology in modern scientific endeavors. ObsPy, a versatile and powerful tool, simplifies tasks related to seismic data handling, enabling researchers to focus more on scientific interpretations. In conclusion, this seismic analysis surpasses a singular event exploration. It embodies a holistic approach, integrating advanced technology, data processing methodologies, and collaborative efforts to unravel the enigmatic world of seismicity. The knowledge gained through this exploration extends its reach to influence and inform a multitude of scientific disciplines, ultimately contributing to the broader understanding of our dynamic planet and the seismic phenomena that shape it.

The Himalaya Mountains are a geological wonder that attracts tourists and followers of various religions to the highest peaks on earth. The Himalayan region is located in a seismic zone where terrible earthquakes have happened regularly. The mountains were formed along a fault where the huge tectonic plates of India and Eurasia collided.The Indian plate's migrating to the north and its interaction with the Eurasian landmass are responsible for the Himalayas' seismic activity. The Gorkha Earthquake, also known as the April 2015 Nepal Earthquake, struck Nepal on April 25 with a magnitude of 7.8 and left approximately 8,800 people dead and 23,000 injured. On May 12, a powerful aftershock with a magnitude of 7.3 occurred, killing more than 200 people and wounding more than 2,500 more.

The purpose of this notebook is to analyse the 2021 Mw8.2 Chignik earthquake. Magnitude versus time plot and seismicity over time plot are obtained using the event catalogue requested from IRIS and are used for analysis. In addition, seismograms and spectrograms from two stations are done for comparison and further analysis.

In this notebook, I have studied the seismicity of the Nepal region for a time period of 10 years from 2005/04/26 to 2015/04/26. The April 2015 Nepal earthquake. It occurred at 11:56 Nepal Standard Time on Saturday, 25 April 2015, with a magnitude of 7.8Mw. This was a big earthquake which cause much harm to society . I choose the region of 100 km radius around this earthquake event and find out pattern of seismicity in the last decade. I have drawn the histogram of the seismicity pattern for the time window. We will figure out earthquake pattern of this Nepal region .

The alps are Europe's largest mountain range located at a former plate boundary. As a consequence of the motion between tectonic plates, there is a continuous occurrence of earthquakes. Most people in German speaking regions however seem to not know that they live in an area of potential seismicity. In this notebook we will analyse the plate motions, where earthquakes occur and whether there is a difference in velocity north and south of the European alps to help answer the question, why most people living the northern regions do not know much about earthquakes in the alps.

This project focus on one of the largest enhanced geothermal systems EGS induced earthquakes in the world, located in Pohang, South Korea. In November 2017, a moment magnitude 5.5 earthquake formed in a relative seismicity quiet area. Thus, it is believed that is an induced earthquake instead of a natural formed earthquake. This project is going to focus to the analysis of the this most damage event in South Korea and part the foreshocks and aftershock of this event is also included in this project. In this project, some background and general information is stated and be displayed in an easy understanding format, such as graph and diagram at first. After that few stations that recorded the event are chosen for the analysis. Then, the related seismographs are plotted and be used to do further analysis, including generation of spectrograms. Together with all the information and diagrams plotted, a brief analysis and discussion is included in the project.

In this project, 2011 Tohoku Earthquake, one of the largest earthquakes ever recorded is investigated.

The purpose of this notebook is to analyze the earthquake patterns in Chile – one of the most seismically active regions in the world. By generating plots of aftershocks frequency within three weeks and earthquake frequency in nearby regions of all time, we hope to deduce how one major earthquake would lead to another. This notebook looks at two major earthquake event, 2010 Mw8.8 Chile earthquake and 2014 8.2Mw Iquique earthquake.