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We present a statistical survey of almost 10 000 radio Type III burstsobserved by the Nancay Radioheliograph from 1998 to 2008, covering nearly afull solar cycle. In particular, sources sizes, positions, and fluxes wereexamined. We find an east-west asymmetry in source positions which could beattributed to a 6(+/-)1 degree eastward tilt of the magnetic field, that sourceFWHM sizes s roughly follow a solar-cycle averaged distribution dN/ds = 14{\nu}^{-3.3} s^{-4} arcmin^{-1} day^{-1}, and that source fluxes closely followa solar-cycle averaged dN/dS_{\nu} = 0.34 {\nu}^{-2.9} S_{\nu}^{-1.7} sfu^{-1}day^{-1} distribution (when {\nu} is in GHz, s in arcmin, and S_{\nu} in sfu).Fitting a barometric density profile yields a temperature of 0.6 MK, while asolar wind-like (\propto h^{-2}) density profile yields a density of 1.2x10^6cm^{-3} at an altitude of 1 RS, assuming harmonic emission. Finally, we foundthat the solar-cycle averaged radiated Type III energy could be similar inmagnitude to that radiated by nanoflares via non-thermal bremsstrahlungprocesses, and we hint at the possibility that escaping electron beams mightcarry as much energy away from the corona as is introduced into it byaccelerated nanoflare electrons.

A decade of solar Type III radio bursts observed by the Nancay Radioheliograph 1998-2008