1. Professor, Dept. of Civil and Environmental Engineering, Imperial College London SW7 2AZ, UK. ORCID: .
2. Professor, School of Civil and Environmental Engineering, Georgia Institute of Technology, Altanta, GA 30332-0355 (corresponding author). ORCID: .
3. Research Director, Université Grenoble Alpes, Centre National pour la Recherche Scientifique, Laboratoire Interdisciplinaire de Physique, 38000 France. ORCID: