1) (Bondár and Storchak 2011). They move station readings from one event to the other and make judgements on the correctness of phase identification. A common tendency of the past to keep the bulletin pages as concise as possible for economical reasons often led to individual station readings or even whole pages of local seismic bulletins not containing a full year-month-day-hour-minute-second stamp, which contributed to the problem. The reconstruction begins in the modern period (2000–2013) to which new and more rigorous procedures for event selection, data preparation, processing and relocation are applied. GCMT depths are also slightly larger than ISC-EHB depths for intermediate and deep events, which is probably due to the use of different velocity models with increasing depth. (f) Combination of six cross-sections (8–13, denoted by E’ to F’ in (e)) to show flat slab structure. It is likely to be run more than four times though, for reasons that are discussed in the following subsections. In cross section (Figure 7b) these two groups appear as separate steeply dipping clusters at depths greater than about 500 km, suggesting a potential slab break off. Some bias in ISC-EHB hypocentres remains due to unmodelled lateral variations in velocities, mostly in subduction zones, which cannot be accounted for unless a 3-D Earth model is used for location. Schellart), Determination of earthquake source parameters from waveform data for studies of global and regional seismicity, The global CMT project 2004‐2010: Centroid‐moment tensors for 13,017 earthquakes, Global teleseismic earthquake relocation with improved travel times and procedures for depth determination, Teleseismic relocation and assessment of seismicity (1918‐2005) in the region of the 2004 Mw 9.0 Sumatra‐Anadaman and 2005, Space‐time distribution of deep seismic deformation in Tonga, Geodynamics of flat subduction: Seismicity and tomographic constraints from the Andean margin, Morphology and volcanism of the Wadati‐Benioff zone in the Tonga‐Kermadec system of recent subduction, Slab1.0: A three‐dimensional model of global subduction zone geometries, High‐resolution mantle tomography China and surrounding regions, Bulletin of the International Seismological Centre, Constraints on seismic velocities in the earth from travel times, Possible large near‐trench slip during the 2011, Insights from the great 2011 Japan earthquake, Finite‐frequency tomography reveals a variety of plumes in the mantle. Search for other works by this author on: Department of Physics, University of Colorado, Boulder, CO 80309-0390, USA, Spatial distribution of earthquakes and subduction of the Nazca plate beneath South America, Geodetic observations of very rapid convergence and bark-arc extension at the Tonga arc, A hybrid multiple event location technique to obtain ground truth event locations, Epicentre accuracy based on seismic network criteria, Improved location procedures at the International Seismological Centre, A petrologic anomaly accompanying outboard earthquakes beneath Fiji-Tonga: corresponding evidence from broadband, Seismicity and shape of the subducted Nazca plate, Evidence for a large-scale remnant of subducted lithosphere beneath Fiji, Analysis of broadband seismograms from selected IASPEI events, A scheme to set preferred magnitudes in the ISC bulletin, Global detection and location of seismic sources by using surface waves, Global teleseismic earthquake relocation with improved travel times and procedures for depth determination, Teleseismic relocation and assessment of seismicity (1918–2005) in the region of the 2004, Space–time distribution of deep seismic deformation in Tonga, Geodynamics of flat subduction: seismicity and tomographic constraints from the Andean margin, Morphology and volcanism of the Wadati–Benioff zone in the Tonga-Kermadec system of recent subduction, Double-planed deep seismic zone and anomalous structure in the upper mantle beneath northeastern Honshu, Slab1.0: A three-dimensional model of global subduction zone geometries, High-resolution mantle tomography of China and surrounding regions, International Seismological Centre: On-line Bulletin, Triple seismic zone and the regional variation of seismicity along the Northern Honshu Arc, Constraints on seismic velocities in the Earth from traveltimes, Finite-frequency tomography reveals a variety of plumes in the mantle, Calibration of seismic travel time using events with seismically determined locations and origin times. 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