Kyushu-Palau Ridge (KPR) is an ocean floor feature in the Philippine Sea. It is named after the nearby islands. At the northern end is the Japanese island of Kyushu. At the southern end is the Pacific island nation of Palau.
The seabed ridge begins in an area about 900 km from the eastern end of the Bungo Channel (豊後水道, Bungo Suidō) or "Bungo strait" between the Japanese islands of Kyushu and Shikoku. The ridge creates a line on the ocean floor which runs southeast in the direction of the island of Palau. There is a chain of extinct volcanos on this line.
KPR is southeast of the Japanese island of Kyushu.
- KPR is an acronym. KPR means "Kyushu-Palau Ridge".
- "IHO-IOC GEBCO gazetter of undersea feature names," Publication B-8, January 2010, p236; retrieved 2012-4-8.
- Kobayashi, K. "Origin of the Palau and Yap trench-arc systems," Geophysical Journal International, Vol. 157, Issue 7, p. 1306.
- Haraguchi, Satoru et al. "The early Miocene (~25 Ma) volcanism in the northern Kyushu-Palau Ridge, enriched mantle source injection during rifting prior to the Shikoku backarc basin opening," Mineralogy and Petrology, Vol. 163, Issue 3, pp 483-504; excerpt, "The northern Kyushu-Palau Ridge (KPR), remnant conjugate arc of the Izu-Ogasawara (Bonin)-Mariana (IBM) active arc ...."; retrieved 2012-4-9.
- Wolfram Alpha, Kyushu-Palau Ridge