High energy neutrino astronomy: the experimental road

The next ten years promise to be a particularly exciting decade for high energy neutrino astrophysics. The frontier of TeV and PeV energies is presently being tackled by large, expandable arrays constructed in open water or ice. Detectors tailored to record acoustic, radio, fluorescence or air shower signatures from neutrino interactions at PeV–EeV energy are being designed in parallel. During the next decade, the sensitivity to neutrinos from TeV to EeV energies may improve by two to three orders of magnitude. This paper reviews the methods, status and prospects of detectors and sketches a scenario for the experimental progress.