SUBSURFACE CIRCULATIONS WITHIN ACTIVE REGIONS

Subsurface Circulations within Active Regions

Using high-resolution ring analysis (HRRA) we deduce subsurface flows within magnetic active regions and within quiet sun. With this procedure we are capable of measuring flows with a horizontal spatial resolution of 2◦ in heliographic angle (or roughly 20 Mm). From the resulting flow fields we deduce mean inflow rates into active regions, mean circulation speeds around active regions, and prob...

A low upper limit on the subsurface rise speed of solar active regions

Magnetic field emerges at the surface of the Sun as sunspots and active regions. This process generates a poloidal magnetic field from a rising toroidal flux tube; it is a crucial but poorly understood aspect of the solar dynamo. The emergence of magnetic field is also important because it is a key driver of solar activity. We show that measurements of horizontal flows at the solar surface arou...

Hydrogen-induced nanotunnel opening within semiconductor subsurface

One of the key steps in nanotechnology is our ability to engineer and fabricate low-dimensional nano-objects, such as quantum dots, nanowires, two-dimensional atomic layers or three-dimensional nano-porous systems. Here we report evidence of nanotunnel opening within the subsurface region of a wide band-gap semiconductor, silicon carbide. Such an effect is induced by selective hydrogen/deuteriu...

A Low T, High Rh, and Potentially Life-friendly Environment within the Martian Salt-rich Subsurface in Equatorial Regions

2049 for XXXXII Lunar and Planetary Science Conference (March, 2011), Houston, TX A LOW T, HIGH RH, AND POTENTIALLY LIFE-FRIENDLY ENVIRONMENT WITHIN THE MARTIAN SALT-RICH SUBSURFACE IN EQUATORIAL REGIONS. Alian Wang 1 , M. P. Zheng 2 , F. J. Kong 2 , Z. C. Ling 3 , W. G. Kong 3 , P. Sobron 1 , B. L. Jolliff 1 , 1 Dept. of Earth and Planetary Sciences and the McDonnell Center for the Space Scien...

Local Synchrony within Brain Regions