Pavel Vladimirovich Krauklis was born on August 27, 1933 in Arkhangelsk. After his father was arrested on the grounds of false charges and sent to a camp for political prisoners in Magadan, his mother with three children went to Leningrad. With the beginning of World War II, Pavel and his brother and sister were evacuated in central Russia, but his mother stayed and worked in besieged Leningrad all 900 days. After the war, a lot of political sentences were vacated and the Krauklis family reunited. In 1951, Pavel Krauklis entered the Physical Department of Leningrad State University. After he graduated the University in 1956, he was invited to postgraduate studying. From 1959 and up to the present, he works in the Saint-Petersburg Department of the Steklov Mathematical Institute. A characteristic feature of Pavel Krauklis’ scientific work is his ability to put together deep theories and practical physical and technological problems. He is a true applied mathematician in the high sense of this word. Beginning from his student days, he was many times in geological survey expeditions in different parts of the Former Soviet Union, and he is familiar with the specificity of field work. His Doctoral Thesis was devoted to acoustic logging, seismic prospecting, and seismology. In the thesis, Pavel Krauklis investigated the nature of waves in multicolumn wells and their use in surrounding moritoring and scanning of borehole technical condition. For a low frequency approximation, he proposed explicit formulas for wave velocities, polarizations, and attenuations, which were later included in every handbook on well logging. Another field of interest of P. Krauklis is the application of the boundary layer method, developed in the laboratory of mathematical geophysics in the Steklov Mathematical Institute under the guidance of V. M. Babich. For more than forty years, P. Krauklis is an adviser of “Abstract Journal. Geophysics.” At the present time, P. Krauklis has more than 150 papers, among them 3 monographs, most of them are written in collaboration with his wife, Krauklis Ludmila Alekseevna, a Phylosophy Doctor in geophysics and a scientific researcher of the Steklov Mathematical Instutute. In 1980, Pavel Krauklis became a Full Professor of the Department of Higher Mathematics in the Leningrad (later on, St.Petersburg) Technological Institute, where he lectured for more than 30 years. In 1982, he was awarded (with coauthors) the State Prize of the Soviet Union for the series of papers “Development of asymptotic methods in the theory of seismic wave propagation and their application to the calculation of dynamical fields in geophysics.”