Conveners
O1.2 The Solid Earth and its Structure
- Charlotte Rowe (Los Alamos National Laboratory (LANL))
- Ehsan Qorbani Chegeni (CTBTO Preparatory Commission)
Regional seismic travel time (RSTT) is a global model (Myers et al. 2010, Begnaud et al. 2021) that rapidly predicts travel times of regional seismic phases (Pn, Sn, Pg and Lg), while accounting for key effects of the three-dimensional crustal and upper mantle structures. RSTT is currently used by the Preparatory Commission for the Comprehensive Nuclear-Test-Ban Treaty Organization for...
Earthquake monitoring in Namibia dates back since 1900s. In 2010,Namibia's Seismological Network only had six permanent seismic stations with aging equipment that were continuously failing, making it difficult to accurately monitor earthquake activities. In 2014, a National Seismological Network expansion project commenced to completely overhaul the Network. With advent use of social media,...
Understanding the structure and dynamics of the Earth’s inner core is the key to understanding the history and evolution of the Earth’s magnetic field. However, knowledge about the inner core remains limited. Fine-scale (1–10 km) structures within the inner core scatter high-frequency seismic waves (ICS), providing critical insights, although detecting these signals is challenging. Using the...
The Canadian National Seismograph Network (CNSN), covering one of the largest single-network areas worldwide, plays an important role in regional seismic event monitoring. To reduce seismic event location uncertainties from the CNSN, we are developing a unified 3-D local and regional scale crustal and upper mantle velocity model for operational location analysis based on the Regional Seismic...
Madagascar is located on the African Plate and is not intersected by any plate boundaries. Despite this, the East African Rift (EAR) extends into the island, suggesting potential tectonic influences. Given Madagascar's position within the African Plate, it would theoretically be expected to exhibit low seismic activity and relative tectonic stability. However, contrary to this assumption, the...
The Afar Region, located in East Africa, is characterized by significant geological dynamism due to its distinctive tectonic setting. This complexity presents both challenges and opportunities for scientific research and sustainable development. A deep understanding of the region's tectonic processes is crucial for mitigating hazards and maximizing its potential. The primary goal of this study...
Crustal thickness beneath Mongolia was determined using the teleseismic receiver function H-k stacking method, which employed waveform data from broadband seismic stations in Mongolia. The findings reveal that the crust of Mongolia thickens from east to west, with the thickness reaching 63 km in western Mongolia and 35.9 km in eastern Mongolia. In the central part of Mongolia, the average...
