  The ARIANNA concept utilizes the Ross Ice Shelf near the coast of Antarctica
to increase the sensitivity to cosmogenic neutrinos by roughly an order of
magnitude when compared to the sensitivity of existing detectors and those
under construction. Therefore, ARIANNA can test a wide variety of scenarios for
GZK neutrino production, and probe for physics beyond the standard model by
measuring the neutrino cross-section at center of momentum energies near 100
TeV. ARIANNA capitalizes on several remarkable properties of the Ross Ice
Shelf: shelf ice is relatively transparent to electromagnetic radiation at
radio frequencies and the water-ice boundary below the shelf creates a good
mirror to reflect radio signals from neutrino interactions in any downward
direction. The high sensitivity results from nearly six months of continuous
operation, low energy threshold (~3x10^17 eV), and more than 2*pi of sky
coverage. The baseline concept for ARIANNA consists of moderately high gain
antenna stations arranged on a 100 x 100 square grid, separated by about 300m.
Each station consists of a small group of cross-polarized antennas residing
just beneath the snow surface and facing downwards. They communicate with a
central control hub by wireless links to generate global triggers.
