[1] This version of shear wave splitting (SWS) database (DB) for North America (NA) contains 6224 pairs of splitting parameters (fast polarization directions and splitting times) measured using all the available data recorded by digital broadband seismic stations over the period of 1980–2007 and archived at the Incorporated Research Institutions for Seismology Data Management Center. The measur...

[1] Between 105–115 degrees, the SKS waveform is complicated by the formation of SPdKS, a wave that has segments of P diffraction along the core mantle boundary. While previous studies have primarily focused on the moveout of SPdKS from SKS, we analyze the concomitant reduction of the SKS amplitude. Long-period SKKS/SKS amplitude ratios present a coherent global pattern. SKKS/ SKS is relatively...

BACKGROUND Seborrheic keratoses (SKs) are common skin lesions that have been shown to occur with increasing age, although the age of onset is not well recorded. OBJECTIVE To determine the prevalence, nature, and distribution of SKs in young people. METHODS One hundred seventy people aged 15 to 30 years were given a total body examination during which the presence, number, site, and size of ...

Shear wave splitting due to source-side mantle anisotropy is estimated from broadband teleseismic and local S waves using a suite of Aegean subduction zone events. The data have been recorded by Kandilli Observatory and Earthquake Research Institute (KOERI) stations, at the depth of more than 30 km, from 2000 to 2007. We assume that there are at most two anisotropic regions along the ray path: ...

We present a new version of a shear-wave splitting (SWS) database for the western and central United States (WCUS) using broadband seismic data recorded up to the end of 2014 to update a previous version that used data recorded prior to the end of 2012, when the USArray Transportable Array stations were still recording in the easternmost region of theWCUS. A total of 7452 pairs of additional me...

Shear-wave splitting (SWS) analysis using SKS, SKKS, and PKS (hereafter collectively called XKS) phases is one of the most commonly used techniques in structural seismology. In spite of the apparent simplicity in performing SWS measurements, large discrepancies in published SWS parameters (fast direction and splitting time) suggest that a significant portion of splitting parameters has been inc...

[1] Shear wave splitting measurements using teleseismic PKS, SKKS, and SKS phases recorded by station LSA on the southern part of the Lhasa Terrane of the Tibetan Plateau reveal significant azimuthal anisotropy with a splitting time of up to 1.5 s, a conclusion that is contradictory to previous studies which suggested isotropy or weak anisotropy. In addition, systematic variations of the splitt...

We have obtained constraints on the strength and orientation of anisotropy in the mantle beneath the Tonga, southern Kuril, Japan, and Izu-Bonin subduction zones using shear-wave splitting in S phases from local earthquakes and in teleseismic core phases such as SKS. The observed splitting in all four subduction zones is consistent with a model in which the lower transition zone (520–660 km) an...