As an example, the seismic hazard results at two sites close to each other showed how different seismic hazards can be. A logic tree accounting for the two ground motion prediction equations and dividing the study region into four seismic zones was used for calculating the seismic hazard. This catalog was homogenized to moment magnitude to match with the selected ground motion prediction equations from Toro and Idriss. Using online sources, an earthquake catalog for Uganda and the immediate areas around Uganda was compiled spanning 108 years, from 1912 to 2020. A probabilistic seismic hazard analysis requires the availability of an earthquake catalog, relevant ground motion prediction equations, and an outline of how the hazard calculations will be conducted.
A probabilistic approach has been used to assess the seismic hazard for Uganda and the surrounding areas. With Adobe Photoshop's easy-to-use tools, applying as much orĪs little detail is needed for the analysis at hand.Uganda is situated between the two seismically active branches of the East African Rift Valley System, which are characterized by high levels of seismicity. Modules, the geologist "paints" the velocity information The image to straighten a marked horizon in the profile. The second is Unfold, which shifts pixels in Which converts a time section to a depth section by rubbersheetingĮach column of an image according to a velocity model added to Seismic Plugin implements two techniques forĪnalyzing seismic reflection profiles. Seismic processing, such as depth correction and reflector Profile and perform calculations on the scanned image to simulate Seismic Plugin provides an alternative toolįor analysis: the geologist can scan the printout of a seismic
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The software for processing digital seismic data is inconvenient There are situations where traditional techniques cannot be applied-įor example, when only printouts of the profiles exist, or when Seismic velocities within the profile- so the profile displaysĪlthough the depth correction of digital seismic data is straightforward, But much seismic reflection data is not corrected for the They may want to makeĪ balanced cross section, measure angles or depths of reflectors,Įtc. Geology from seismic reflection profiles. Geologists often need to perform interpretations of structural Please contact Jay Lieske if you are interested in custom development of the software for your system. The software is no longer for sale, as it is not compatible with current versions of Photoshop. The reference list for the article is also available online. It includes case studies from users of the software. The February 2000 issue of Offshore Magazine, pp. To depth correction of printed seismic sections", was published in See our example of processing a marine seismic Unfold flattens a folded horizon in a profile.Depth Convert approximates the conversion ofĪ time-measured seismic reflection profile to a depth-measured.University, Texaco, Conoco, and Lamont-Doherty Earth Observatory. It works within Adobe Photoshop on Macintosh and Windows.īy universities and oil companies worldwide, including Princeton Seismic Plugin is a tool for analyzing scanned
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