EM sounding formally encompasses both propagative (high-frequency) and inductive (low-frequency) methods. Orbital, surface-penetrating radars have been shown to be effective to depths of kilometers on the Moon and in icy parts of Mars, but have been ineffective over the most of Mars’ silicate surface. Fixed, surface-based radars will likely improve penetration to no more than several hundred me...

magnetotellurics (mt) is an electromagnetic geophysical method of imaging the earth's subsurface by measuring natural variations of the electrical and magnetic fields at the earth's surface. investigation depth ranges from 300m below ground by recording higher frequencies down to 10,000m or deeper with long-period soundings. research applications include experimentation to further dev...

Presentamos una aplicación destinada a la gestión y distribución de sumarios de revistas a través de Internet que combina la presentación de los mismos vía WWW juntamente con opciones de suscripción y recepción periódica en el buzón de correo electrónico del usuario. A diferencia de otros productos, Winsumar no está ligado a ningún productor de sumarios y permite, tanto la introducción manual d...