Portugal: The southern coast and the Tejo river estuary, close to Lisbon. Quite visible across the river, at the harbour entrance, is the suspended bridge named '25th of April' . Imaged by ERS 2 during an ascending pass, the bridge is marked by three distinct bright stripes, due to the multiple reflection effects. The port of Barreiro can also be detected. Remarkable throughout the estuary is the bottom topography revealed by the SAR instrument.
ERS-2 gyro-less operations ensured by the joint ESA/European industry efforts continue supporting a wide range of environmental applications through the provision of routinely and timely available ERS 2 SAR products of good quality.