Introducing Groundwater Physics
Mary P. Anderson
[bold Water is critical to the survival of life] and the continued existence of the natural environment on Earth. Most people visualize rivers and lakes as the water resources in need of protection, but groundwater makes up more than 98% of available freshwater resources, supplies 40% of the drinkin ... [Phys. Today 60, 42 (2007)] published Tue May 1, 2007.
Cellular automaton modeling of mesospheric optical emissions: Sprites
M. Hayakawa, D. I. Iudin, E. A. Mareev, and V. Y. Trakhtengerts
This paper presents a new attempt to model two-dimensional mesospheric optical emissions named sprites with the use of a cellular automaton network. A large-scale model of sprites based on the phenomenological percolation-like probabilistic approach is developed to model streamer discharges in sprit ... [Phys. Plasmas 14, 042902 (2007)] published Fri Apr 27, 2007.
Geometry of ophiolites in eastern Cuba from 3D inversion of aeromagnetic data, constrained by surface geology
Jose A. Batista-Rodriguez, Marco A. Perez-Flores, Gerardo Quiroga-Goode, and Luis A. Gallardo
This study combined geophysical, geologic, and topographic information to investigate the Mayari-Baracoa ophiolitic belt in eastern Cuba. A recently developed interpretation technique for 3D inversion of magnetic data was employed to determine the geometry at depth of ophiolitic and other rocks. Bas ... [Geophysics 72, B81 (2007)] published Fri Apr 27, 2007.
Biophysical and biochemical parameters of Italian wheat genotypes tested in Albanian condition
Ariana Ylli (Kraja), Ilirjana Stamo, and Fatbardha Babani
The obtained values during the period when the plant has finished its vegetative growth display good relations with yield. Today the study of leaf fluorescence signature via imaging techniques, in order to estimate the multi-stress tolerance in plants is applying successfully. Duilio cultivar result ... [AIP Conf. Proc. 899, 830 (2007)] published Fri Apr 27, 2007.
Soil Moisture Measurement Tools Production and Development
Gazanfer Birdal, Alp Akin, and Ihan Sarikaya
Measurement and control of soil moisture is a common requirement in aqriculture. Available methods for measurement of soil content are gravimetric, nuclear, electrical, soil potantial methods. In this work, we have tried to fabricate soil moisture tools with resistive, capasitive sensors and electro ... [AIP Conf. Proc. 899, 764 (2007)] published Fri Apr 27, 2007.
Studies About Atmospheric Electricity
Florian Mandija and Floran Vila
In this paper is presented the study of air ionization in the outdoor ambient in correlation with all characteristic parameters, and the consequences of this effect. The regional spectrum of the measurements is very large. The experimental technique used in the measurements is contemporary and very ... [AIP Conf. Proc. 899, 755 (2007)] published Fri Apr 27, 2007.
Thermal Properties of the ESR Centres in Speleothem Samples
U. Ulusoy and Gul Anbar
The paramagnetic centres used for ESR (Electron Spin Resonance) dating method should be thermally stable which is the main factor limiting the range of this method. In this work, thermal stabilities of the ESR centres in the cave deposites from the Aladag-check lar Massive and Alanya in Turkey has b ... [AIP Conf. Proc. 899, 752 (2007)] published Fri Apr 27, 2007.
Monitoring The Heavy Metals Concentration In The Soil In The Campia Turzii Area
Ioan Suciu, Constantin Cosma, and Mihai Todica
In Romania, in the Central Transylvania region, around the Campia Turzii Metallurgical Complex, the soil is loaded with Cr, Cu and Pb at levels exceeding in some places, 16 times, the maximum allowable limits ICP spectrometry and NAA measured the concentration of heavy metals. (C)2007 American Insti ... [AIP Conf. Proc. 899, 751 (2007)] published Fri Apr 27, 2007.
Dust Particles as Ice Nuclei: A Study based on Seeded Water Drops Freezing and other Techniques
V. Stoyanova and T. Kupenova
IN activity of atmospheric dust particles from Sofia's low atmosphere was compared using the method of seeded drops freezing and by their activation and grown ice crystals counting. Their active centers characterization is realized interpreting the experimental data according to the classical nuclea ... [AIP Conf. Proc. 899, 750 (2007)] published Fri Apr 27, 2007.
Comparative EPXMA, SEM and TEM Analysis of Dust Particles collected in the Czech Republic
V. Stoyanova, J. Fisak, P. Chaloupecky, Ts. Tsacheva, M. Marinov et al.
Filter-collected solid particles (PM10) from Czech meteorological stations Milesovka and Kopisty were analyzed electron-microscopically with respect to size, composition and morphology and classified by their possible origin natural or anthropogenic. (C)2007 American Institute of Physics ... [AIP Conf. Proc. 899, 749 (2007)] published Fri Apr 27, 2007.
The Evaluation of Spatial Fluctuations and Temporal Variability in Estimated Levels of THMs in Drinking Water
D. Ristoiu, I. Haiduc, M. Culea, A. Mocan, R. Chira et al.
Chlorine, used by municipal water treatment facilities to disinfect water, reacts with naturally occurring organic matter to produce a host of compounds known as disinfection by-products. In addition to chloroform, brominated species such as bromodichloromethane, dibromochloromethane, and bromoform ... [AIP Conf. Proc. 899, 745 (2007)] published Fri Apr 27, 2007.
Use of a Remote Sensing Method to Estimate the Influence of Anthropogenic Factors on the Spectral Reflectance of Plant Species
Dora D. Krezhova and Tony K. Yanev
Results from a remote sensing study of the influence of stress factors on the leaf spectral reflectance of wheat and tomato plants contaminated by viruses and pea plants treated with herbicides are presented and discussed. The changes arising in the spectral reflectance characteristics of control an ... [AIP Conf. Proc. 899, 738 (2007)] published Fri Apr 27, 2007.
Lidar, Radiometer and Ozonemeter Measurements over Urban Area
I. Iliev, V. Grigorieva, N. Kolev, T. Evgenieva, B. Kaprielov et al.
A scanning aerosol lidar, a NIR-VIS radiometer, an ozonemeter and a ground meteorological station were used for observation of the atmosphere over the urban area of the Sofia City. The mixing layer height and the aerosol extinction coefficient and its variation during the convective boundary layer f ... [AIP Conf. Proc. 899, 735 (2007)] published Fri Apr 27, 2007.
The Temperature Field in the Greenhouse during Clear-sky Day
M. urić, B. Tošić, and V. Sajfert
In this paper is analyzed temperature field in greenhouse made by the sun energy. The obtained formula for the temperature could not be expressed over elementary functions because the solution contains integral without primitive function. Therefore this integral was simulated by algebraic function a ... [AIP Conf. Proc. 899, 730 (2007)] published Fri Apr 27, 2007.
Optical Properties of Clouds and Atmosphere by Visible Images
K. Bakalova and D. Bakalov
We present a technique for evaluation of the optical properties of clouds using visible images taken at ground level. In estimating the cloud optical thickness, the solar radiation scattered by the atmosphere is inferred from the surrounding sky brightness. The atmospheric transmittance is obtained ... [AIP Conf. Proc. 899, 729 (2007)] published Fri Apr 27, 2007.
Investigation of earthquakes model and real space distribution
Elisaveta Marekova
Earthquake sequences exhibit a random character as their dominant statistical feature. The distance r between any pairs of subsequent events is employed to describe the investigated sequences in this paper. The whole information for events space distribution could be taken if all possible values of ... [AIP Conf. Proc. 899, 726 (2007)] published Fri Apr 27, 2007.
Air-ions, ozone and some other atmospheric measurements during the partial solar eclipse at Belgrade, 29 March 2006
P. M. Kolarž, D. M. Filipovič, D. Marković, and B. P. Marinković
Air-ion and ozone concentrations were measured during the partial eclipse in Belgrade and relations between atmospheric parameters were established. Mirror symmetry in positive and negative ions was observed. (C)2007 American Institute of Physics ... [AIP Conf. Proc. 899, 725 (2007)] published Fri Apr 27, 2007.
Study of the Relationship between the VIS-NIR Continuum of Scattered Zenith Solar Radiation and the Atmospheric Meteorological Conditions
I. Iliev and D. Iordanova
The relation between the spectrum structure of the VIS-NIR solar radiation scattered from zenith and the meteorological conditions (sunny, hazy or cloudy) is discussed in this work. The analysis reveals that using approximation coefficients of the linear approximation of the spectra envelopes a simp ... [AIP Conf. Proc. 899, 724 (2007)] published Fri Apr 27, 2007.
RETAS Stochastic Model to Study Aftershock Rate Decay of the Denali Fault M7.9 Earthquake, November 3, 2002
D. K. Gospodinov, E. G. Marekova, and A. T. Marinov
A RETAS model is used to analyze aftershock rate decay after the Denaly Fault earthquake with a main shock magnitude M[sub S]=7.9. We verify different variants of the RETAS model ranging from the limit case M[sub th] = M[sub main] (main shock) to the case when M[sub th]=M[sub o] (lower magnitude cut ... [AIP Conf. Proc. 899, 723 (2007)] published Fri Apr 27, 2007.
Retrieving the Velocity of Motion of Air Masses from Digital Images of Clouds
Kalinka Bakalova and Dimitar Bakalov
An interdisciplinary project, aimed at developing tools for the determination of physical characteristics of the atmosphere by means of ground-based digital imaging in the visible range is in progress. Determining the 3-dimensional field of velocities of motion of the air masses from digital images ... [AIP Conf. Proc. 899, 722 (2007)] published Fri Apr 27, 2007.
M[o-umlaut]ssbauer Test for Authentication of Meteorites
V. Rusanov, V. Gushterov, and P. Nedialkov
Mossbauer spectroscopy is discussed as a tool of giving information on the origin of meteorites as well as classifying them into the groups of the iron, stone, and stony-iron meteorites. Mossbauer studies of two unidentified findings and two well documented stone meteorites: the Pavel one fallen on ... [AIP Conf. Proc. 899, 546 (2007)] published Fri Apr 27, 2007.
Assessment of Copper Pollution in Overbank Sediments by In-situ Measurements Using a Field Portable EDXRF Instrument
Nikolla Civici and Artan Tashko
The application of a field portable EDXRF instrument for the assessment of Mati River overbank sediments pollution is presented. The portable EDXRF spectrometer is based on a Peltier-cooled Si-PIN X-ray detector and a 740 MBq Cd-109 disc radioactive source. The comparison of the laboratory results w ... [AIP Conf. Proc. 899, 405 (2007)] published Fri Apr 27, 2007.