Multicorer_close_up (IMAGE) University College London Caption Close up of multicorer rig on the stern of the R/V Armstrong. Multicorers are used to collect the most recently deposited ~50cm of sediments, which includes the uppermost layer at the water/sediment interface. Credit Credit – Dr Alice Carter-Champion Usage Restrictions For editorial and educational purposes only License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.