The author, Hamid Nassar Alsadi, is a native of Hit, Alanbar province, Iraq. He obtained his BSc. in Geology, Physics, and mathematics from Reading University, England, MSc. in Geolphysics from Dur...view moreThe author, Hamid Nassar Alsadi, is a native of Hit, Alanbar province, Iraq. He obtained his BSc. in Geology, Physics, and mathematics from Reading University, England, MSc. in Geolphysics from Durham University, England, and PhD. in Seismology from Uppsala University, Sweden. Since 1972, he was mainly working in petroleum exploration using 2D and 3D seismic surveying. During this time, he was equally active in the academic domain, where he conducted teaching courses, thesis supervision for university postgraduate students, and published a number of books and papers dealing with petroleum geophysical exploration. After retirement from his original post in the Iraqi state oil companies, he worked as a consultant with oil exploration establishments at home and abroad, including giving numerous (> 45) training courses for oil-exploration personnel.view less