Biased Witnesses: Crystal Thermal Records May Give Conflicting Accounts of Magma Cooling

Expedited Cooling of the Lunar Magma Ocean Due to Impacts

Give patients access to their medical records.

Last week nearly 3000 healthcare providers and users attended the International Forum for Quality and Safety in London. Hosted by The BMJ and the Institute for Healthcare Improvement, it’s always an inspiring event. You can watch recorded sessions (http://internationalforum.bmj.com/london), and I encourage you to sign up for the Asia Forum in Kuala Lumpur in August and for next year’s Internati...

Crystal sizes in evolving silicic magma chambers

Crystal size distributions (CSDs) of quartz and zircon phenocrysts in individual pumice clasts from several voluminous ash-flow tuffs provide a quenched snapshot view of conditions in preclimactic magma chambers. A common feature of these CSDs is a concavedown, lognormal shape, in contrast to the reported linear CSDs in more mafic systems. This feature is interpreted to be a general result of s...

Cooling magma model for deep volcanic long-period earthquakes

Deep long-period events (DLP events) or deep low-frequency earthquakes (deep LFEs) are deep earthquakes that radiate low-frequency seismic waves. While tectonic deep LFEs on plate boundaries are thought to be slip events, there have only been a limited number of studies on the physical mechanism of volcanic DLP events around the Moho (crust-mantle boundary) beneath volcanoes. One reasonable mec...

Thermal advection analysis of cooling waves of Iran

Survey of advection of cold waves in Iran is the main aim of this study. In this regard, 45 synoptic stations were employed and studied. In order to investigate the thermal advection of cold waves, 1000, 850, 700 and 500 hp levels were reviewed and analyzed. Results indicated that cold waves in Iran most affected thermal advection caused by Tibet- Siberia, Siberias integrated Turkmenistan high-...