Since 1972, Weir-Jones Engineering Consultants (WJEC) has been involved in the development and installation of microseismic monitoring systems for the mining, heavy construction and oil/gas industries. To be of practical value in an industrial environment, microseismic monitoring systems must produce information which is both reliable and timely. The most critical parameters obtained from a microseismic monitoring system are the real-time location and magnitude of the seismic events. Location and magnitude are derived using source location algorithms that typically utilize forward modeling and iterative optimal estimation techniques to determine the location of the global minimum of a predefined cost function in a three-dimensional solution space. Generally, this cost function is defined as the RMS difference between measured seismic time series information and synthetic measurements generated by assuming a velocity structure for the area under investigation (forward modeling). The seismic data typically used in the source location algorithm includes P-and S-wave arrival times, and raypath angles of incidence obtained from P-wave hodogram analysis and P-wave first break identification. In order to obtain accurate and timely source location estimates it is of paramount importance that the extraction of accurate P-wave and S-wave information from the recorded time series be automated-in this way consistent data can be made available with minimal delay. WJEC has invested considerable resources in the development of real-time digital filters to optimize extraction, and this paper outlines some of the enhancements made to existing Kalman Filter designs to facilitate the automation of P-wave first break identification.

This article is devoted to the analysis of the Jean-Pierre Bemba Gombo case of the International Criminal Court. He was a Congolese politician, as well as the founder and the head of non-governmental armed group, named “Movement for the Liberation of Congo”, which members committed number of crimes during armed conflict in Central African Republic. The importance of this case lies in the fact, that it was the first case of the International Criminal Court, where the accused was charged with crimes, committed by his subordinates, and not by the accused himself. This article reveals the main contradictions between the judgments of the Trial Chamber, which found Bemba guilty, and the Appeals Chamber, which acquitted him. The legal basics of the institute of personal responsibility of commanders and other superiors in international criminal law, which were formed in the decision of the Appeals Chamber in the Bemba case, are highlighted therein. The author addresses and analyzes the grounds for recognizing commanders and other superiors guilty for committing crimes by their subordinates. It was discovered, that Article 28 of the Rome Statute requires the commanders to take only necessary or reasonable measures to prevent or punish the crimes, committed by their subordinates, not all possible measures at the relevant time. The Trial Chamber should specify what exactly the accused had to do to prevent or punish the crimes, as well as inform the accused of it prior to the hearing. It is also necessary to take into account objective circumstances, that could prevent the commander from adequately responding to the commission of crimes by his subordinates, especially if they operated in the territory of another state. The commander's ability to take the necessary or reasonable measures to prevent or punish the crimes, committed by his subordinates, should be analyzed in relation to each individual crime he is charged with, and not in relation to all the actions of subordinates as a whole. At last, the Appeals Chamber provided an exhaustive list of criteria for determining whether the measures, taken by the commander, were sufficient.

No abstract

No abstract