Copyright © 1995 by International Society of Offshore and Polar Engineers,

Golden, Colorado, USA. All Rights Reserved.



The Proceedings of

the First (1995) ISOPE


Tsukuba, Japan, November 21-22, 1995





A single volume: 238 pp.

International Standard Book Number: ISBN 1-880653-21-4

Library of Congress Catalog Card Number: 95-77708


Copyright ã 1995 by International Society of Offshore and Polar Engineers, Golden, Colorado, USA. All Rights Reserved.


The publisher and the editors of its publications assume no responsibility for the statements or opinions expressed in papers or presentations by the contributors to this conference or proceedings.






National Program and Overview
Deep Ocean Resource Development Program of Korea
H. S. Kim ..... 1
InterOceanMetal Joint Organization: Achievements and Challenges
R. Kotlinski ..... 5
Current Status of Deep-sea Mineral Resources Development in Japan
A. Inokuma ..... 9
Exploration Inputs for Exploitation of Manganese Nodules in Central Indian Basin
R. Sharma and R. R. Nair ..... 15
Mining System and Technology
Assessment of Options in Design of Deep-Ocean Mining Pipe Systems ..... 23
J. S. Chung
NIRE's Research in Ocean Mining
M. Kuriyagawa ..... 31
The German Environmental Impact Research for Manganese Nodule Mining in the SE Pacific Ocean
H. Thiel and Forschungsverbund Tiefsee-Umweltschutz ..... 47
Mining System and Technology
Preliminary Geotechnical Properties of Deepsea Sediments from the Central Indian Basin
N. H. Khadge ..... 55
Simulation Study on Motions of a Towed Collector for a Manganese Nodule Mining System
H. Yasukawa, K. Ikegami and T. Minami ..... 61
Three Dimentional Analysis on Behaviour of Mining Pipe of Deep Seabed Mineral Resources
S. Hong ..... 69
Studies on the Optimum Shape of Buffer for Reducing the Longitudinal Vibration of a Pipe String for Mining Manganese Nodules
K. Aso, K. Kan and H. Doki ..... 75
Chaotic Heave Motion of Marine Cable-body Systems
S. Huang and D. Vassalos ..... 83
Study of the CLB Mining System for Nodule & Crust Recovery
Y. Masuda and M. J. Cruickshank ..... 91
Influence of Bathymetry in Manganese Nodule Pilot Mine Site Selection: A Case Study from the Central Indian Basin
V. N. Kodagali ..... 99
Integration of Deeptow Data for Mapping of Deepsea Resources
R. Sharma, S. J. Sankar, M. Sudhakar and T. Ramprasad ..... 105
Nodule Size: An Important Factor in Nodule Mining?
A. B. Valsangkar ..... 113
Influence of Distribution Characteristics and Associated Seabed Features on Exploitation of Cobalt-Rich Manganese Deposits
T. Yamazaki, R.Sharma and K. Tsurusaki ..... 119
Formation Patterns and Preservation Condition of Polymetallic Nodule
L. Dehua ..... 125
Deep-Sea Mineral Resources in the Northwest Pacific Ocean: Geology, Geochemistry, Origin and Exploration
A. Usui and K. Iizasa ..... 131
Resource Potential of Hydrothermal Activities on the East Pacific Rise (8ºN-14ºN)
N. Okamoto and Y. Matsuura ..... 139
Behavior of Sediment-Laden Negative Buoyant Jet in Flow
K. Fujisaki and H. Ogata ..... 149
Numerical Modeling of Sediment Transport Caused by the Deep-sea Mining
W. Zielke, J. A. Jankowski, J. Sündermann and J. Segschneider ..... 157
DISCOL - Disturbance and Recolonization Experiment of a Manganese Nodule Area of the Southeastern Pacific
G. Schriever ..... 163
Environmental Study on the Deep-sea Mining of Manganese Nodules in the Northeastern Tropical Pacific
K. Taguchi, K. Nakata, S. Aoki and M. Kubota ..... 167
Deep Sea Sediment Resuspension System Used for the Japan Deep Sea Impact Experiment
B. Barnett and H. Yamauchi ..... 175
Preliminary Results of Meiofauna and Bacteria Abundance in an Environmental Impact Experiment
T. Kaneko(Sato), K. Ogawa and T. Fukushima ..... 181
Chemical and Radiochemical Studies of Sediment Samples from the JET Site
K. Harada, Y. Shibamoto and H. Kokubun ..... 187
Materials and Processing
Reduction Leaching of Manganese Nodules with Sodium Sulfite in Ammonium Chloride Solution
K.-S. Choi and J.-W. Sohn ..... 193
Bioleaching of Marine Manganese Nodules by Acidophilic Sulfur-Oxidizing Bacteria
Y. Konishi and S. Asai ..... 201
Carbon Dioxide Fixing-Type Hydrogen Reduction Leaching of Deep-Sea Oxide Minerals Using a Pt/PTFE Catalyst in Ammonium Carbonate Solution at Moderate Temperature and Atmospheric Pressure
T. Konta, T. Ohkoshi, T. Yoshioka and A. Okuwaki ..... 207
Leaching of Cobalt-Rich Ferromanganese Crust with Ammoniacal Solutions Using Ammonium Sulfite and Ammonium Thiosulfate as Reducing Agents
M. Niinae, C.-H. Park, Y. Nakahiro, T. Wakamatsu and J. Shibata ..... 211
Development for Hydrometallurgical Process of Cobalt Rich Crusts
N. Rokukawa ..... 217
The Adsorption Behavior of Copper Ion on Manganese Nodules
K.-H. Park, B.-S. Roh and D.-J. Kim ..... 223
National Program and Overview
Indonesia's Ocean Resource Developments
Kuntoro Mangkusubroto ..... 229