Seismic Land Streamers ■ Efficient, productive seismic exploration ■ Reflection, refraction and MASW surveys ■ Adjustable geophone spacing to fit the job ■ Fits all popular geophones, even 3-component ■ Abrasion-resistant steel tripod base for stability ■ Kevlar®-reinforced webbing with cable tie points A land streamer is an array of geophones designed to be towed along the gr ound. The name originates from marine streamers, which are strings of hydrophones towed behind ships. Land geophysicists have long envied the high productivity achieved in marine surveys. Now it appears that highly-productive reflection, refraction, and surface-wave surveys can be achieved on land. As a general rule, geophones planted in the ground set the standard for data quality, but land streamer surveys are excellent in many applications, while making the survey economically feasi- ble. References can be found on the Internet, including papers comparing data quality and productivity between towed array and conventional surveys. And of course streamers are ideal for reconnaissance surveys, with daily production rates of miles instead of meters. Geostuff has available a commercial land-streamer system which we believe will provide better data, be less expensive, more reliable, and easier to use than individually constructed units. The basic LS-1 system consists of a

base plate, tow webbing, and top plate. It is designed to be used with your existing geophones and cables to quickly convert them to a low-cost land streamer. MASW survey conducted with Geostuff Land Streamer Typical surface wave data from one record The top plate is drilled and tapped for geophones from Geospace, Sensor, Mark Products, and others. Standard 5/16 and 3/8inch male threaded geophone studs or a 3/8-inch flat-head screw can be inserted for female-studded geophone cases, such as the 3component Geospace GS-3C. The 5-cm wide webbing is reinforced with Kevlar® for tensile strength and...