Background: The variation of the radon progeny concentration in outdoor environment and meteorological parameters at fine resolution were studied for one year at a continental location, National Atmospheric Research Laboratory, Gadanki, India.  Materials and Methods: The concentrations were measured using Alpha Progeny Meter by collecting air samples at a height of 1 m above the Earth&rsqu...

In this paper we propose an analytic function for the spherical albedo values of airless and near-airless magma ocean planets (AMOPs). We generated 2-D fractal surfaces with varying compositions onto which individually threw 10,000 light rays. Using approximate form Fresnel equations measured how much incident was reflected. Having repeated algorithm on surface roughnesses find as a Hurst expon...

Formation flying satellites SAR interferometry is one of the most effective space techniques for generation of the accurate digital mapping of the World’s topography in Earth remote sensing. The conventional mathematical model for elevation generation mainly focuses on the modes of the parameters, and the baseline is projected on the height-range plane of the main SAR antenna. The mathematical ...

As part of the Materials on The International Space Station Experiment (MISSE), aromatic polymers containing phenylphosphine oxide groups were exposed to low Earth orbit (LEO) for approximately 4 years. All of the aromatic polymers containing phenylphosphine oxide groups survived the exposure despite the high fluence of atomic oxygen that completely eroded other polymer films such as Kapton and...

CURRENT SCIENCE, VOL. 89, NO. 11, 10 DECEMBER 2005 1937 e-mail: [email protected] from Ninetyeast Ridge. In Proc. Ocean Drill. Programme Sci. Results, 1990, vol. 121, pp. 777–882. 15. Seeber, L., Armbruster, J. G. and Quittmeyer, R. C., Seismicity and continental subduction in the Himalayan Arc. Am. Geophys. Union Geodyn. Ser., 1981, 3, 215–242. 16. Seih, K. and Natawidjaja, D., Neotectonics ...

The Altiplano-Puna Magma Body (APMB) in the Central Andes is the largest imaged magma reservoir on Earth, and is located within the second highest orogenic plateau on Earth, the Altiplano-Puna. Although the APMB is a first-order geologic feature similar to the Sierra Nevada batholith, its role in the surface uplift history of the Central Andes remains uncertain. Here we show that a long-wavelen...

Synthetic Aperture Radar can be considered nowadays as an established and mature technology to obtain high-resolution two-dimensional reflectivity images of the Earth surface in nearly all weather conditions and independently of the day-night cycle. During a first period, ranging from their conception in the 1950s to the beginning of the 1990s, SAR systems were characterized by a single acquisi...

We develop a method for spatio-spectral localization of harmonic data on a sphere and use it to interpret recent high-resolution global estimates of the gravity and topography of Venus in the context of geodynamical models. Our approach applies equally to the simple spatial windowing of harmonic data and to variable-length-scale analyses, which are analogous to a wavelet transform in the Cartes...