ALVIN 831 Dive 831 4The runtime for this video is 08m 06s.Alvin dive 831 took place on August 25, 1978 during voyage LU-100. The Chief Scientist was T. Atwater in the operating area of Mid-Atlantic Ridge. The HOV reached a depth of 2667 meters. The purpose was described as 'GEOLOGY' and the sponsor as 'AMAR'.The items in this collection are embargoed in the system in keeping with copyright requirements. However, they are available to users upon request. Please contact the MBLWHOI Library to access the items at whoas@whoi.edu.Digitization of this material was supported by a Recordings at Risk grant from the Council on Library and Information Resources (CLIR). The grant program is made possible by funding from The Andrew W. Mellon Foundation. CLIR is an independent, nonprofit organization that forges strategies to enhance research, teaching, and learning environments in collaboration with libraries, cultural institutions, and communities of higher learning. To learn more, visit www.clir.org and follow CLIR on Facebook and Twitter.