Studying heterogeneity and anisotropy via numerical and physical modeling
Sam Zandong Sun, Lei Chen, Xi Xiao, Lifeng Liu, Zhiyuan Tang et al.
Palaeozoic carbonate rocks are widely distributed in China. The storage spaces of these carbonate reservoirs are mainly secondary and include dissolution caves, holes, and fractures. The original porosity is less than 1% in most formations. Hydrocarbon distribution is controlled by the systems of fr ... [The Leading Edge 31, 190 (2012)] published Fri Feb 10, 2012.
Frequency-dependent velocity prediction theory with implication for better reservoir fluid prediction
Haiyang Wang, Sam Zandong Sun, Dan Wang, Jianfa Han, and Bing Jing
A series of experiments have shown that the elastic wave velocities and attenuation are dependent on frequency (Jones, 1986; Sams et al., 1997; Batzle et al., 2006). Velocity dispersion and attenuation may make it difficult to match different frequency bands of geophysical data such as surface seism ... [The Leading Edge 31, 160 (2012)] published Fri Feb 10, 2012.
The theory and application of DEM-Gassmann rock physics model for complex carbonate reservoirs
Sam Zandong Sun, Haiyang Wang, Zhishui Liu, Yingwei Li, Xinyuan Zhou et al.
The storage spaces of carbonate reservoirs in the Tarim Basin are dominated by secondary pore porosity such as dissolution caves, holes, and cracks (Song et al., 2001). Research has shown that pore shapes can significantly influence the velocities of elastic waves (Eshelby, 1957; Kuster and Toksoz, ... [The Leading Edge 31, 152 (2012)] published Fri Feb 10, 2012.
Origin and architecture of fractured-cavernous carbonate reservoirs and their influences on seismic amplitudes
Ping Yang, Sam Zandong Sun, Yonglei Liu, Haiyin Li, Guangjian Dan et al.
Ordovician carbonate is important for petroleum exploration and production in the Tarim Basin. The matrix porosity of the carbonate reservoirs is usually less than 2% because of their age-old sedimentary history and depth (deeper than 5500 m). The storage spaces are secondary dissolution pores and f ... [The Leading Edge 31, 140 (2012)] published Fri Feb 10, 2012.
Stochastic tipping points in climate dynamics
Stefano Pierini
A crucial question recently raised in climate dynamics concerns abrupt climate transitions: Are they due to a tipping point (TP) being exceeded, or is fast noisy dynamics the cause of their excitation? In this respect, a case study based on a low-order ocean model is developed to show that in an exc ... [Phys. Rev. E 85, 027101 ] published .
Ocean acidification and coral reefs
Stephen G. Benka
Abstract not available. [Phys. Today 65, 20 (2012)] published Wed Feb 1, 2012.
Crevasses may make ice shelves more stable
Richard J. Fitzgerald
Abstract not available. [Phys. Today 65, 20 (2012)] published Wed Feb 1, 2012.
Creating a high temperature environment at high pressure in a gas piston cylinder apparatus
P. C. Burnley and I. C. Getting
An internal heater capable of 1400 K has been developed for use with a gas piston cylinder apparatus capable of achieving in excess of 3 GPa with an argon pressure medium. The heated gas piston cylinder produces a truly hydrostatic environment for samples up to 3 mm in diameter and 8 mm in length. T ... [Rev. Sci. Instrum. 83, 014501 (2012)] published Tue Jan 31, 2012.
Multiple zonal jets on the polar beta plane
A. G. Slavin and Y. D. Afanasyev
The mechanism of the formation of multiple quasi-zonal jets as well as their meridional scaling is investigated for a range of control parameters including the radius of deformation and the parameter which characterizes the polar beta-plane. Flows in a rotating cylindrical domain where the depth of ... [Phys. Fluids 24, 016603 (2012)] published Thu Jan 26, 2012.
No Evidence of Magnitude Clustering in an Aftershock Sequence of Nano- and Picoseismicity
Jorn Davidsen, Grzegorz Kwiatek, and Georg Dresen
One of the hallmarks of our current understanding of seismicity as highlighted by the epidemic-type-aftershock sequence model is that the magnitudes of earthquakes are independent of one another and can be considered as randomly drawn from the Gutenberg-Richter distribution. This assumption forms th ... [Phys. Rev. Lett. 108, 038501 ] published .
On the possibility of using suspension-log data to estimate historic overburden in shallow unconsolidated sediments
Douglas Wyatt and Michael Waddell
Suspension-log data are typically used for engineering and seismic studies in shallow unconsolidated sediments. At the USDOE Savannah River Site, suspension data were acquired in a series of deep boreholes (up to ~400 m) to support high-resolution geological and geophysical investigations in the Upp ... [The Leading Edge 31, 84 (2012)] published Tue Jan 10, 2012.
SEAM UPDATE: ELASTIC SIMULATIONS
Michael Fehler
SEAM is in the process of obtaining bids for elastic simulation on the SEAM elastic deepwater model that was constructed using funding from the Research Partnership to Secure Energy for America (RPSEA subcontract # 07121-2001). The model is an extension of the SEAM Phase I model that was originally ... [The Leading Edge 31, 24 (2012)] published Tue Jan 10, 2012.
Nondestructive identification of isotopes using nuclear resonance fluorescence
Toshiyuki Shizuma, Takehito Hayakawa, Ryoichi Hajima, Nobuhiro Kikuzawa, Hideaki Ohgaki et al.
Nondestructive identification of heavy isotopes concealed in a thick iron box has been demonstrated by using nuclear resonance fluorescence. A quasi-monochromatic photon beam produced by the collision of laser quanta with high energy electrons was used for resonant excitation of nuclear levels in Pb ... [Rev. Sci. Instrum. 83, 015103 (2012)] published Thu Jan 5, 2012.
Slow slip: A new kind of earthquake
John E. Vidale and Heidi Houston
Abstract not available. [Phys. Today 65, 38 (2012)] published Tue Jan 3, 2012.
Author Biographies
This article lists contributors to this issue and provides brief biographies of them. ... [J. Environ. Eng. Geophysics 16, 191 (2012)] published Tue Jan 3, 2012.
A Hybrid Method for UXO vs. Non-UXO Discrimination
Karl N. Kappler and Erika Gasperikova
Remediation of sites contaminated by unexploded ordnance is complicated by the problem of discriminating between buried conductors that are intact munitions and those that are harmless scrap metal. Here we present two distinct approaches of object discrimination, both of which rely on training data ... [J. Environ. Eng. Geophysics 16, 177 (2012)] published Tue Jan 3, 2012.
The Concentrations of K, Ra and Th in Soil Sample in Osmaniye (Turkey)
I. Akkurt, A. Kara, B. Mavi, K. Gunoglu, and S. Karaborklu
The K, Ra and Th concentration is due to the magmatic structure of the earth and it can be varied from place to place. Osmaniye is located in the Eastern side of Mediteranean Region. It holds the climatic characteristics of the same region and arises with Middle Taurus Mountains from west to North a ... [AIP Conf. Proc. 1400, 508 (2011)] published Wed Dec 28, 2011.
Radiation Shielding Properties of Some Marbles in Turkey
K. Gunoglu and İ. Akkurt
Especially after development of technology, radiation started to be used in a large fields such as medicine, industry and energy. Using radiation in those fields bring hazordous effect of radition into humancell. Thus radiation protection becomes important in physics. Although there are three ways f ... [AIP Conf. Proc. 1400, 502 (2011)] published Wed Dec 28, 2011.
Full-Scale Physical Modeling Of The System Granular MediaSteel Sheet Piling
M. P. Dubrovskyy, G. N. Meshcheryakov, V. N. Petrosyan, and O. M. Dubrovska
This paper considers the problem of determination of real parameters of the cross-sectional values of sheet piling walls made of U-profile piles (moment of inertia and section modulus) and their drivability regarding piles interaction with granular media (for example, sandy soil). Among main factors ... [AIP Conf. Proc. 1400, 380 (2011)] published Wed Dec 28, 2011.
General Law of Electromagnetic Radiation Conversion Efficiency in Systems with Linear and Non-Linear Irreversibility
Yu. P. Chukova
It is shown, that the efficiency of conversion of solar radiation obeys the same law in alive and nonliving (technical) systems. For different processes in alive systems the evolution has selected different ranges of solar intensity and different conditions of irreversibility. ... [AIP Conf. Proc. 1400, 333 (2011)] published Wed Dec 28, 2011.
Determination of Kakan's Salt Plug Resource Dimensions and Tonnage with Geophysics Methods (Gravimetery)
R. Taghizadeh, R. Heidari Orojloo, and M. A. Aryana
There is a developed salt plug region in KAKAN (located by Boyer ahmad in Iran) that there are some observations and surface geophysical operations data, so to estimate the salt reserve explorational geophysics operations have to be done. With attention to qualitative annotation which there is in ge ... [AIP Conf. Proc. 1400, 97 (2011)] published Wed Dec 28, 2011.