... gas production and prevent hydrate reformation when used in conjunction with other methods (Moridis et al., 2007; Li et al., 2008; Ahn et al., 2010). For such reasons, many experimental and numerical studies have been conducted to understand the characteristics of depressurization-induced gas...

... hydrate media on seismic profile possess low velocity and low amplitude, high frequency characteristics, through comprehensive analyzing and interpreting the seismic and well logging and geological data. According to the dynamic features of the reflections and logging results, anomaly segments of natural...

... ABSTRACT In order to explore the geochemical characteristics of Mo element in Cobalt-rich crusts and their relationship with paleoceanographic environment variation, 56 crust samples and a thick crust from 7 seamounts in the Magellan Seamounts (MST) have been approached in detail. Studies show...

.... Table 1 presents the characteristics of 30 mm grade particles. The particles are shown in Figure 1. Radioisotopes were used to study the interfacial slip in a vertical pipe. Table 1 Characteristics of the examined artificial nodules Particle size grade Dimensions Weight Symbol mm grams (kg) 30 mm...

... Geochemical Characteristics of the soil above Muli Gas Hydrate Reservoir Zhongjun Sun, Mingcai Xu, Zhibin Yang and Aihua Qin Institute of Geophysical & Geochemical Exploration, Chinese Academy of Geological Sciences Langfang, China ABSTRACT The Muli gas hydrate reservoir in Qilian Mountains...

... Slope area of Alaska, US (Collett, 1993) and the Mackenzie delta, Canada (Dallimore et al., 1999). gas hydrate composition basin characteristic raman spectrometry geology siltstone qilian mountain permafrost upstream oil & gas anomaly sandstone qinghai-tibet plateau hydrate...

... Study of Compressive Strength Prediction of Cobalt-crust Substrate in Deep-sea Based on Distribution Characteristics and Frequency Design Yingyong Bu, Changjun Qiu, Haiming Zhao College of Mechanical and electrical Engineering, Central-south University, Changsha , China College of Mechanical...

.... The kinetic and dynamic characteristics of pilot-miner moving on extremely soft seabed are acquired. Finally, in comparison with measured data from a lake trial in 150-m depth in 2001, the simulation results of the pilot-miner are validated. INTRODUCTION The pilot-miner is one of the subsystems...

... is required to be less than 50 mm. Fractal theory being used to study granularity distribution law of cobalt crust to ascertain the situation of broken cobalt crust has signification to the research of deep-sea mining system. FRACTAL CHARACTERISTICS OF CUTTING GRANULARITY OF COBALT CRUST Fractal...

... that is 10[m/s]. Fig.5 The relationship between injection gas flux and the depth of gas injection point. Left-side graph shows when the superficial velocity of liquid phase is 4[m/s] and right-side graph is when that is 10[m/s]. Dynamic characteristic The length of the recovery pipe of this system is very...

... iron extraction sulfur dioxide acid solution concentration nodule ore acid extraction composition capital investment manganese precipitation marine nodule slurry liquor characteristic precipitation reaction atmospheric pressure metals & mining sulfide precipitation...

...Proceedings ofthe Third (1999) Ocean Mining Symposium Goa, India, November 8-10, 1999 . Copyright © 1999 by The International Society ofOffshore and Polar Engmeers ISBN 1-880653-45-1 An experimental study on the flow characteristics of solid-liquid two-phase mixture in a vertical tube Chi Ho Yoon...

... to detailed baseline data on benthic conditions. Two sets of study areas (such as AI, Tl, Rl; and T2, R2) were selected from multibeam data and nodule abundance in the Central Indian Basin (Fig. 1). These areas were studied in detail for sediment characteristics, nodule distribution, seafloor bathymetry...