  Smartphone-based communication networks form a basis for services in
emergency response scenarios, where communication infrastructure is impaired or
overloaded. Still, their design and evaluation are largely based on simulations
that rely on generic mobility models and weak assumptions regarding user
behavior. For a realistic assessment, scenario-specific models are essential.
To this end, we conducted a large-scale field test of a set of emergency
services that relied solely on ad hoc communication. Over the course of one
day, we gathered data from smartphones distributed to 125 participants in a
scripted disaster event. In this paper, we present the scenario, measurement
methodology, and a first analysis of the data. Our work provides the first
trace combining user interaction, mobility, and additional sensor readings of a
large-scale emergency response scenario, facilitating future research.
