Library of Congress Control Number: 2011946224# Springer Science+Business Media B.V. 2012 No part of this work may be reproduced, stored in a retrieval system, or transmitted in any form or by any means, electronic, mechanical, photocopying, microfilming, recording or otherwise, without written permission from the Publisher, with the exception of any material supplied specifically for the purpose of being entered and executed on a computer system, for exclusive use by the purchaser of the work.Cover illustration: "with courtesy of Rio Nasca (Peru): discovery of a buried settlement with pyramid discovered by the processing of QuickBird-2 imagery"Printed on acid-free paper Springer is part of Springer Science+Business Media (www.springer.com)
ForewordIn 2008 I was asked by Rosa Lasaponara and Nicola Masini whether the European Space Agency could support a workshop on the use of remote sensing for archaeology. We decided to do that and this gave a platform to sum up the state of the art in this area. Meanwhile the area has developed and it was time to produce a book which introduces the new methods to a broader community.Nowadays the quantity and quality of information about the surface of the Earth obtained remotely is increasing at an ever faster rate. In the beginning of the twentieth century, photos were taken from hot air balloons. In the 1970s, multispectral sensors were put into orbit, followed by spaceborne imaging radar (SAR) and airborne LIDAR. In the last decades we have seen remote sensing technology pushing the boundaries of all fronts. Instruments are acquiring data at higher spatial resolution, broader spectral ranges, more radar frequency bands and wave polarisations. Processing techniques are constantly evolving with increasing computing power.Technological developments in satellite remote sensing have rarely been driven by archaeologists. The instruments they use on the ground for their field surveys, such as magnetometers and ground penetrating radars, were initially developed for geological and civil engineering purposes. In a similar way, the science of remote sensing has largely been shaped by other disciplines. However, the benefits of satellite remote sensing to archaeologists have been quickly recognised. Remote sensing is now an essential tool for a range of different archaeological domains.The creativity of archaeologists worldwide in using remote sensing for subsurface archaeological feature detection and analysis of the palaeo-environment has been demonstrated in many cases. Crop and soil marks have been identified on air photos, and shadow effects on oblique photos highlight topographical effects potentially caused by buried structures. LIDAR provides evidence of subsurface structures hidden under the forest canopy, by mapping subtle changes in relief at very high resolution. The sensitivity of near infrared radiation to vegetation has greatly enhanced the ability to identify crop marks. SAR images have led to the discovery of ancient roads leading to lost cities through the analysis of...