Seismic Investigations At The Vattenfall Experimental Dam, Älvkarleby, Sweden: Stage 2

Even though no defects were detected valuable experience has been gained in applying seismic methods to dam monitoring. As a next step it is suggested that distributed acoustic sensing (DAS) be tested on a real dam where fiber optic cables are already installed to determine if the high frequencies recorded at Älvkarleby can also be recorded on such a sensor. Other objectives would be to better test the repeatability of the source and determine velocities within the real dam by recording along the entire fiber optic layout.