Order number 940406-171827-13 OFFIGAL USE ONLY page 37 set 5 with 102 0 OPTICAL DETECTION/; AIR/fluorescence ;FLUORESCENCE; PHOTOELECTRIC EMISSION; DOMINIC; HARDTACK; HARAC CODE; HAF CODE Item 66 150. REPORT NUMBER 110. PRIMARY TITLE (M) MIT-CSE--7 Analysis of gravity dams subjected to underwater explosions. (Interim report) 710. CORPORATE SOURCE Massachusetts Inst. of Tech., Cambridge (USA) 371. PUB. DATE (YYMMDD) 530701 34. CLASSIF. LEVEL TEXT Unclassified 950. ABSTRACT This is an analytical study of the loading and response of various types of dams when they are subjected to underwater or surface detonations.tThe objectives of the project to establish the physical vulnerability of dams are not only to collect information defining the loading under such conditions and to develop suitable methods for computing the response, but also to compute the response of several of the more common types of concrete gravity dams. Contained in the study is a summary of the data now available on phenomena associated with shallow ater explosions, and of the methods whereby this data has been used to predict the loading imposed on the dams. Also discussed are methods used for computing the response of gravity dams both prior to and after cracking. The application of these computational procedures and loading data have been illustrated by using a medium high-bead straight gravity dam as an example. Several conclusions pertaining to the blast effects on this type of dam are presented. 801. KEYWORD (S) DAMS/blast damage ;DAMS/blast loading ;DAMS;BAKER BURST; SCALING LAWS; SHOCK HYDRODYNAMICS ; UNDERGROUND SHOCK WAVES; SURFACE EXPLOSIONS; UNDERWATER SHOCK WAVES Item 150. 110. 67 REPORT NUMBER PRIMARY TITLE (M) DASA-~-2309 Review of artificial radiation belts, Explorer 4; unidirectional trapped radiation, Injun 1. Final report 70. PERSONAL AUTHOR (M) 710. CORPORATE SOURCE 371. PUB. DATE (YYMMDD) 34. CLASSIF. LEVEL TEXT 950. ABSTRACT Manson, D.J.; Fennell, Saint Louis Univ., 690531 MO George, J.A. “tes Unclassified The final results of Explorer 4 analyses relating . to artificial radiation belts ARGUS) J.F.; (USA) (events TEAK, ORANGE and are presented in Chapters 1 and 2. Angular distributions of unidirectional trapped radiation natural radiation and pre- and post-Starfish) S0034u11 OFFICIAL USE ONLY (for for Injun