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An intensive overview of the fundamentals and physical principles on which seismic methods are based. It provides the necessary related geophysical background to understand seismic data and, hence, the reader will obtain a more clear understanding of how to properly process the data in order to ultimately obtain better seismic images that are used for accurate interpretation.With various examples, this includes the theory of elasticity, the wave equation, the types of seismic waves, single-layer reflector models, seismic events, etc.
Seismic data must be interpreted using digital signal processing techniques in order to create accurate representations of petroleum reservoirs and the interior structure of the Earth. This book provides an advanced overview of digital signal processing (DSP) and its applications to exploration seismology using real-world examples. The book begins by introducing seismic theory, describing how to identify seismic events in terms of signals and noise, and how to convert seismic data into the language of DSP. Deterministic DSP is then covered, together with non-conventional sampling techniques. The final part covers statistical seismic signal processing via Wiener optimum filtering, deconvolution, linear-prediction filtering and seismic wavelet processing. With over sixty end-of-chapter exercises, seismic data sets and data processing MATLAB codes included, this is an ideal resource for electrical engineering students unfamiliar with seismic data, and for Earth Scientists and petroleum professionals interested in DSP techniques.
Earthquakes are considered as one of the most destructive disasters. Several theories exist that attempt to explain earthquake behavior. The concept accepted by seismologists is the Tectonics Plate Theory. The persistent threat of seismic events and the difficulties involved with mitigating their effects highlight the importance of disaster preparedness. A review of pertinent literature reveals that up to 20% of the patients hospitalized after earthquakes suffer from nontrauma-related conditions. The conditions commonly seen are acute exacerbations of chronic conditions such as diabetes, chronic obstructive pulmonary disease, acute coronary syndromes and myocardial infarctions, end-stage renal disease, anxiety, hypertension, and the onset of spontaneous abortions, among others. Although investigators examining the medical consequences of seismic events have made significant progress, additional work is necessary to further improve the care and outcomes of earthquake victims. These endeavors require a true transdisciplinary approach involving participation by individuals from multiple medical, health, and nonmedical specialties.