We investigate the behavior of the intermediate-degree mode frequencies of the sun during the current extended minimum phase to explore the time-varying conditions in the solar interior. Using contemporaneous helioseismic data from GONG and MDI, we find that the changes in resonant mode frequencies during the activity minimum period are significantly greater than the changes in solar activity a...

W. E Henley,’ M. A. Patterson,’ R. J. Neves, l and A. Dennis Lemly* ‘Virginia Cooperat ive Fish and Wildl i fe Research Unit , ’ Department of Fisheries and Wildl i fe Sciences, Virginia Polytechnic Inst i tute and State Universi ty , Blacksbulg, VA 24061-0321; TJ S. Forest Service, Southern Research Stat ion, Coldwater Fisheries Research Unit , Department of Fisheries and Wildl i fe Sciences, ...

1 Department of Biological Sciences, Macquarie University, Sydney, NSW 2109, Australia 2 Environment Institute and School of Earth and Environmental Sciences, University of Adelaide, Adelaide, SA 5005, Australia 3 South Australian Research and Development Institute, PO Box 120, Henley Beach, SA 5022, Australia 4 Imperial College London, Silwood Park, Ascot, Berkshire, SL5 7PY, UK 5 Faculty of V...

Basis pursuit inversion of seismic reflection data for reflection coefficients is introduced as an alternative method of incorporating a priori information in a seismic inversion process. The inversion is accomplished by building a dictionary of functions, representing seismic reflection responses, and constituting the seismic trace as a superposition of these responses. Basis pursuit decomposi...

Introduction: In recent years, spacecraft observations of 'medium-sized' asteroids 951 Gaspra, 243 Ida, 253 Mathilde, and most importantly 433 Eros have shown the overriding dominance of impact processes with regard to the structure and appearance of these irregular bodies. In a previous work [1], I investigated the relatively unexplored area of seismic shaking as a cause for the downslope moti...

*Correspondence: Philip M. Benson, Rock Mechanics Laboratory, School of Earth and Environment, University of Portsmouth, Portsmouth PO1 3QL, UK e-mail: [email protected] Understanding different seismic signals recorded in active volcanic regions allows geoscientists to derive insight into the processes that generate them. A key type is known as Low Frequency or Long Period (LP) event, ge...

Mechanoreceptive hair-cells of the vertebrate inner ear have a remarkable sensitivity to displacement, whether excited by sound, whole-body acceleration or substrate-borne vibration. In response to seismic or substrate-borne vibration, thresholds for vestibular afferent fibre activation have been reported in anamniotes (fish and frogs) in the range -120 to -90 dB re 1g. In this article, we demo...

Introduction: The internal structures of terrestrial planets are commonly constrained by seismic data and geochemical considerations. We suggest that these constraints may be augmented by gravity drilling that focuses on interpreting satellite altitude free-air gravity observations for boundary undulations of the internal density layers related to mass flow. This approach involves separating th...

Strong motion records are important for improving seismic design, damage assessment and analysis of earthquake effects. Despite the relevance having strong networks, their implementation in Peru has been performed very recent years. For instance, only five stations Lima recorded 2007 Mw 7.9 Pisco earthquake, whereas 55 2021 6.0 Mala earthquake. The current number instrumentations city provides ...