All papers published in this volume have been reviewed through processes administered by the Editors. Reviews were conducted by expert referees to the professional and scientific standards expected ...of a proceedings journal published by IOP Publishing Publishing.• Type of peer review: Single Anonymous• Conference submission management system: Morressier• Number of submissions received: 32• Number of submissions sent for review: 32• Number of submissions accepted: 29• Acceptance Rate (Submissions Accepted / Submissions Received × 100): 90.6• Average number of reviews per paper: 1• Total number of reviewers involved: 23• Contact person for queries:Name: Assoc. Prof. Tony VenelinovEmail: tvenelinov_fhe@uacg.bgAffiliation: University of Architecture, Civil engineering and Geodesy, Sofia, Bulgaria
Abstract
The aim of this contribution is twofold. First, we show that when two (or more) different quantum groups share the same noncommutative spacetime, such an ‘ambiguity’ can be resolved by ...considering together their corresponding noncommutative spaces of geodesics. In any case, the latter play a mathematical/physical role by themselves and, in some cases, they can be interpreted as deformed phase spaces. Second, we explicitly show that noncommutative spacetimes can be reproduced from ‘extended’ noncommutative spaces of geodesics which are those enlarged by the time translation generator. These general ideas are described in detail for the
κ
-Poincaré and
κ
-Galilei algebras.
On February 6, 2023, two large earthquakes occurred near the Turkish town of Kahramanmaraş. The moment magnitude (Mw) 7.8 mainshock ruptured a 310 km-long segment of the left-lateral East Anatolian ...Fault, propagating through multiple releasing step-overs. The Mw 7.6 aftershock involved nearby left-lateral strike-slip faults of the East Anatolian Fault Zone, causing a 150 km-long rupture. We use remote-sensing observations to constrain the spatial distribution of coseismic slip for these two events and the February 20 Mw 6.4 aftershock near Antakya. Pixel tracking of optical and synthetic aperture radar data of the Sentinel-2 and Sentinel-1 satellites, respectively, provide near-field surface displacements. High-rate Global Navigation Satellite System data constrain each event separately. Coseismic slip extends from the surface to about 15 km depth with a shallow slip deficit. Most aftershocks cluster at major fault bends, surround the regions of high coseismic slip, or extend outward of the ruptured faults. For the mainshock, rupture propagation stopped southward at the diffuse termination of the East Anatolian fault and tapered off northward into the Pütürge segment, some 20 km south of the 2020 Mw 6.8 Elaziğ earthquake, highlighting a potential seismic gap. These events underscore the high seismic potential of immature fault systems.
Oziroma geometer, zemljemerec ter vsi nad- in podstrukturirani poklici, ki se pretežno ukvarjajo z določanjem dimenzij v prostoru in njegovo transformacijo na papir. Ima sebi lastne posebnosti, čare, ...privlačnosti in tudi skrivnosti, razumljive le tistemu, ki se dovolj globoko potopi med vse zakonitosti, tako med nenapisana pravila kot med dobesedne pravne akte. Vse poteka počasi, saj za vsako težavo zraste še ena težava, ki vodi v nadaljnje podtežave. Ponuja vsaj tri izstopajoče zgodbe, ki se med seboj prepletajo, in ga je z nekaj časovne distance vredno prebrati večkrat. Razsipali smo dediščino, katere vrednosti nihče v hiši ni niti slutil, vse dokler se niso pojavile vaše čudovite fotografije,« je bil navdušen direktor podjetja.
In this study, we estimate a time series of geocenter anomalies from a combination of data from the Gravity Recovery and Climate Experiment (GRACE) satellite mission and the output from ocean models. ...A matrix equation is derived relating total geocenter variations to the GRACE coefficients of degrees two and higher and to the oceanic component of the degree one coefficients. We estimate the oceanic component from two state‐of‐the‐art ocean models. Results are compared to independent estimates of geocenter derived from other satellite data, such as satellite laser ranging and GPS. Finally, we compute degree one coefficients that are consistent with the processing applied to the GRACE Level‐2 gravity field coefficients. The estimated degree one coefficients can be used to improve estimates of mass variability from GRACE, which alone cannot provide them directly.
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