Geophone LST453

A land streamer is an array of geophones designed to be towed along the ground. The name originates from marine streamers which are strings of hydrophones towed behind boats for marine seismic surveys. 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. Land streamers have been developed by individuals using a variety of innovative methods. Additional references can be found on the web by searching for "land streamer", including papers comparing data quality and productivity between towed array and conventional surveys. As a general rule, geophones planted in the ground set the standard for data quality, but land streamers record excellent data in many applications while making the survey economically feasible. A "good" affordable survey often will be a better choice than a "great" survey that can't be done due to its cost. The land-streamer system will provide better data, be less expensive, more reliable, and easier to use than individually constructed units. To satisfy the needs of individual applications and users, systems will be available with a wide variety of geophones in single or multi-component and fixed or gimbaled versions. The top plate is drilled and tapped for standard 5/16 and 3/8-inch male threaded geophone cases from Sensor, Mark Products, Geospace and others, or a 3/8-inch flat head screw can be inserted for female-studded geophone cases, such as the 3-component Geospace GS-3C case shown here.