Fig. 2
From: Rational volcanic hazard forecasts and the use of volcanic alert levels
Sketch of the complementary contributions required to inform decision-makers. The double arrows indicate two-way exchange occurring at all levels, among scientists (left group, blue arrows) and between scientists and decision-makers (right group, green arrows). Decisions are informed by science (left) and made by decision-makers (right), involving a constant process of interaction and exchange, definition of common language, and reciprocal understanding and trust