The seismic properties of rocks are known to be sensitive to partial liquid or gas saturation, and to aligned fractures. P-wave anisotropy is widely used for fracture characterization and is known to be sensitive to the saturating fluid. However, studies combining the effect of multiphase saturation and aligned fractures are limited even though such conditions are common in the subsurface. An u…

We explore with numerical simulations basic physical conditions leading to key observed features of non-volcanic tremor (NVT) in relation to slow slip events (SSEs) and earthquakes along the Guerrero segment of the Mexican subduction zone. To study the interactions between different modes of slip, and examine possible variations over timescales larger than the 15 year observational interval, we…

SS precursor observations are a powerful tool to study the topography and character of transition zone discontinuities, especially in regions such as ocean basins where few seismic station sexist, precluding other high resolution approaches. Still, the available coverage is limited by the distribution of sources and stations, but also by the level of noise and by the fact that, in some distanc…

For extensional wave propagation along a cylindrical pipe, there exists a natural stopband in the frequency range between the first and second modes. This study explores the feasibility and practicality of building a drill collar acoustic extensional-wave isolator by combining the stopbands of pipes of different thicknesses. Numerical modelling shows that this is indeed possible and a stopband …

Enlarging the European Union (EU) permits traders to avoid the exposure to any contingent trade-protection measure without violating the letter of the law under which the protective measure is established. This practice is also known as the �deflection of trade�. Not just since the solar panels investigations in 2013, but certainly with heightened attention to the issue, the deflectio…

The small salp, Thalia democratica, is known globally to form dense swarms, yet the physiological and oceanographic factors that influence the magnitude and occurrence of these swarms are poorly understood. In this study, two numerical models were used to explore T. democratica population dynamics. A Lefkovitch matrix model identified that the survival of juvenile oozoids was the most important…

Reactive flow at depth (either related to underground activities, like enhancement of hydrocarbon recovery andCO2 storage, or to natural flow like in hydrothermal zones) can alter fractures’ topography, which might in turn change their seismic responses. Depending on the flow and reaction rates, instability of the dissolution front can lead to a wormhole-like pronounced erosion pattern. In a …

A series of feeding trials was carried out, offering planula larvae of Cyanea capillata to three potential predators, Mnemiopsis leidyi, Mytilus edulis and Ciona intestinalis, alone or mixed with algae or copepods. Mussels and ascidians consumed planulae in significant numbers in all prey combination trials, whereas ctenophores did so only when planulae were offered as sole prey. These results …

Lying below Vatnajokull ice cap in Iceland, Baroarbunga stratovolcano began experiencing wholesale caldera collapse in 2014 August 16, one of the largest such events recorded in the modern instrumental era. Simultaneous with this collapse is the initiation of a plate boundary rifting episode north of the caldera. Observations using the international constellation of radar satellites indicate r…

PENGARUH PENERAPAN ECONOMIC VALUE ADDED (EVA) TERHADAP KINERJA KEUANGAN PADA PERUSAHAAN OTOMOTIF YANG TERDAFTAR DI BURSA EFEK INDONESIA (BEI) Skripsi. Program Studi Strata Satu Akuntansi. Fakultas Ekonomi dan Bisnis Universitas Muhammadiyah Prof. DR. HAMKA. 2015. Jakarta. Kata kunci : Penerapan Economic Value Added (EVA) dan Kinerja Keuangan. Penelitian ini bertujuan untuk mengetahui pengaru…