A UN agency says satellite images show 35 percent of structures in the Gaza Strip have been destroyed or damaged since fighting broke out between Israel and Hamas last October.

The United Nations Satellite Centre compared images collected on February 29 with those taken before and after the start of the fighting.

The center says the analysis shows more than 88,000, or 35 percent, of the structures in the Gaza Strip have been destroyed or damaged.

More than one-third of the damage occurred during a period of just over one month from November 26. Around this time, Israel resumed military operations after a seven-day pause that started on November 24.

By governorate, the damage ratio is 51 percent in North Gaza, followed by Gaza, with 45 percent, and Khan Younis, with 44 percent.

Project Associate Professor Suzuki Hiroyuki of the University of Tokyo says the analysis shows the intensity of the fighting. He says it is causing far more extensive damage than the fighting from 2008 to 2009 and in 2014.

Suzuki says Israeli forces have been clearing land and continuing airstrikes on all parts of the Gaza Strip to pressure Hamas.

Suzuki adds that the global community's failure to stop Israel's military action has greatly disappointed people in Gaza and undermined their confidence in international norms and law. He says the global community must become actively involved in the reconstruction of the Gaza Strip after the fighting ends.