This is a basic guide to good practice in the creation, methodology, use and storage of geophysical data for archaeologists who increasingly use sophisticated methods for collecting and interpreting information. The Arts and Humanities Data Service (AHDS) has produced this series to provide the arts and humanities research and teaching communities with practical instruction in applying recognized standards and good practice to the creation, preservation and use of digital resources. All the guides in the series identify and explore key issues and offer comprehensive pointers for those who need more specific information. As such they are essential reference material for anyone interested in computer-assisted research and teaching the arts and humanities.