CLEAN: Scientists survey seabed fractured by Japan quake

The video tutorial discusses the mapping of earthquake impacts, focusing on the Japan trench. It outlines the objectives of a research cruise, which include installing equipment at boreholes for data recording. The video details the technology used, such as cameras, manipulators, and sensors, and explains the vehicle's connection to control systems. Finally, it covers data recording and analysis methods, emphasizing the importance of camera installations and recorders.

What is the significance of the Japan trench in earthquake research?

• It is the deepest part of the ocean.

• It is a site for oil drilling.

• It records seismic events in sedimentary materials.

• It is a popular tourist destination.

What is one of the main tasks of the research cruise?

• To explore new marine species.

• To install equipment for data recording.

• To conduct a fishing expedition.

• To map the ocean floor for treasure.

What type of cameras are used for visual tasks during the cruise?

• Infrared cameras

• X-ray cameras

• Photo and HDTV cameras

• Thermal cameras

How is the underwater vehicle connected for control?

• With a cable to the winch

• Using a remote control

• Through a wireless network

• Via satellite communication

What tools are used for navigation in the epicenter area?

• GPS and radar

• Sonars and beacons

• Lighthouses and buoys

• Maps and compasses