Enhancing core-diffracted arrivals by supervirtual interferometry
نویسندگان
چکیده
منابع مشابه
Enhancing the Core Competencies
Identifies how contexts affect communication strategies and practices Engages in effective communication practices in a variety of situations and with a variety of media Oral Communication [1] Written Communication Writing Across the Curriculum/Using Writing [2] Visual Literacy [3] Media Literacy [4] Technological Literacy Integrating Instructional Technology into Your Courses [5] Online Teachi...
متن کاملExtracting seismic core phases with array interferometry
[1] Seismic body waves that sample Earth’s core are indispensable for studying the most remote regions of the planet. Traditional core phase studies rely on well-defined earthquake signals, which are spatially and temporally limited. We show that, by stacking ambient-noise cross-correlations between USArray seismometers, body wave phases reflected off the outer core (ScS), and twice refracted t...
متن کاملDetection of an ultralow velocity zone at the core-mantle boundary using diffracted PKKPab waves
[1] Seismic phases diffracted around Earth’s core contain information about lowermost mantle wave speeds. By measuring the slowness of incident diffracted energy from array recordings, seismic velocity along the diffracted path can be estimated. Here we apply this principle to diffraction of the major arc seismic phase PKKPab recorded at the Canadian Yellowknife array to estimate P wave velocit...
متن کاملDepth from diffracted rotation.
The accuracy of depth estimation based on defocus effects has been essentially limited by the depth of field of the imaging system. We show that depth estimation can be improved significantly relative to classical methods by exploiting three-dimensional diffraction effects. We formulate the problem by using information theory analysis and present, to the best of our knowledge, a new paradigm fo...
متن کاملDoubly Diffracted Ray from a Hard Quarterplane
The scattering of the electromagnetic field from a half wave dipole source around a quarterplane can be calculated from the solutions to two scalar problems, one with a soft quarterplane and one with a hard quarterplane. In both cases, a doubly diffracted ray may exist, but only in the case of the hard quarterplane does this present a problem. The paper develops the necessary transition functio...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Geophysical Journal International
سال: 2013
ISSN: 1365-246X,0956-540X
DOI: 10.1093/gji/ggt452