Developments in Geotectonics, Volume 20: Recent Crustal Movements, 1982 presents the proceedings of the 3rd Symposium on Recent Crustal Movements and Phenomena Associated with Earthquakes and Volcanism, held in Tokyo, Japan on May 12–13, 1982. This book presents the results in crustal movement studies at a local or regional scale. Organized into four parts encompassing 45 chapters, this volume begins with an overview of the gravimetric research carried out in various locations in Maracaibo Basin Area. This text then evaluates the reliability of the leveling measurements using modified geodetic checks as well as through comparison with independent measurements of crustal movement. Other chapters consider the basis of geodetic strain analysis. This book discusses as well the first-order geodetic measurements in seismically active areas in southern and southwestern Australia. The final chapter deals with the correlation of the data of relevelling with surface relief. This book is a valuable resource for engineers and geologists.