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The purpose of this paper is to highlight the importance of a comprehensive global database on volcanic unrest (WOVOdat) as a resource to improve eruption forecasts, hazard evaluation and mitigation actions.

WOVOdat is a centralized database that hosts multi-parameter monitoring data sets from unrest and eruption episodes of volcanoes worldwide. Its online interface (https://wovodat.org/) allows interactive data analysis and comparison between volcanoes and eruption styles, which is needed during volcanic crises, as well as to perform basic research on pre-eruption processes, teaching and outreach.

WOVOdat aims to standardize and organize the myriad of monitoring data types at the global scale. Users can compare changes during a crisis to past unrest episodes, and estimate probabilities of outcomes using evidence-based statistics. WOVOdat will be to volcanology as an epidemiological database is to medicine.

The success of eruption forecast relies on data completeness, and thus requires the willingness of observatories, governments and researchers to share data across the volcano community.

WOVOdat is a unique resource that can be studied to understand the causes of volcanic unrest and to improve eruption forecasting.

WOVOdat is the only compilation of standardized and multi-parameter volcano unrest data from around the world, and it is freely and easily accessible through an online interface.

This edited volume has its genesis in a conference entitled New Paradigms in Economics of Welfare and Trade under Globalisation and Regionalisation. Held at the Coogee campus of the Australian School of Taxation (Atax), University of New South Wales (Sydney, Australia) from 8th to 10th August 2006, this conference brought together economic theorists from around the globe to celebrate Murray Kemp's 80th birthday. Conference participants and presenters included a former teacher, colleagues, co-authors, senior academics and many former students of Murray. After a two-year gestation period, the volume has finally been published. Half of the chapters in this book are derived from papers presented at the conference. The remaining half of the book consists of invited papers completed after the conference. All chapters in this volume were subjected to a formal reviewing and revision process.