Israel is building a new military separation line in Gaza, cutting off the far north of the strip, satellite images examined by the BBC's fact-finding team show.
Troops control and clear the area across the entire width of northern Gaza.
Satellite images and video footage show that hundreds of buildings between the Mediterranean Sea and the Israeli border have been demolished, mostly in controlled explosions.
The images also show that Israeli troops and vehicles are deployed along the entire new separation line.
Analysts say the footage suggests Gaza has been divided into zones to make it easier to control.
An Israeli military spokesman told the BBC that "they are targeting terrorist operatives and infrastructure" in northern Gaza.
HA Heljer, a Middle East security expert at the Royal United Services Institute think tank, says satellite images indicate Israel is preparing to block Palestinian civilians from returning to the northern Gaza Strip.
More than 100.000 people have already been displaced from the far north of Gaza, according to UN figures.
The footage appears to show two long stretches of road on either side of the cleared strip connecting to the cleared land across the urban area.
Buildings are being demolished between the two parts of the road, with a clear pattern visible since the beginning of October.
This partition runs about nine kilometers along Gaza, from east to west, dividing Gaza City and the towns of Jabaliya, Beit Hanoun and Beit Lahia in northern Gaza.
The BBC has been told that there is a tactical route between Jabalia and Gaza City, part of operational activities targeting Hamas in Jabalia.
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Footage posted online by the Israeli military shows several high-rise buildings collapsing in controlled explosions since early October.
The graphic below shows examples geolocated by the BBC's fact-finding team along this new corridor.
An Israeli army spokesman told the BBC that it had no intention of destroying civilian infrastructure "without an operational need" to neutralize Hamas.
Other footage shows Israeli army Humvees driving through the cleared area from the direction of Israel.
The Humvees are not as heavily armored as other military vehicles, and Heller told the BBC it was unlikely they would be used unless the army was absolutely sure of their safety, suggesting Israeli troops are in control of the area.
Some analysts believe the presence of the Israeli army could indicate a permanent military separation, giving them control over who can travel between Gaza and the northern Gaza governorate.
"They dig in for the long haul. I absolutely expect the northern partition to develop identically to the Necarim corridor," said Heljer.
The BBC has previously documented how two partitions have emerged in Gaza since the start of the current war.
The Netzarim Corridor divides the area south of Gaza City, while the Philadelphia Corridor gives the Israeli military control over land that runs along the entire length of Gaza's border with Egypt.
The BBC's analysis of this new partition in the north shows a similar pattern to the construction of previous corridors over the past year, with existing and newly built roads connecting and military positions springing up at regular intervals.
Buildings and farmland are being cleared so that roads can be paved and military infrastructure can be built.
Eado Hecht of the Begin-Sadat Center for Strategic Studies (Besa), an Israeli think tank specializing in national security and foreign policy, agreed that the data showed a new dividing line, but questioned whether it was designed to be permanent.
"There is a new separation corridor that separates Gaza City and the northern cities of the Gaza Strip.
"The goal is to cut off Hamas and the forces of other organizations that have returned to the area from support and multiples to withdraw, to deal with him more effectively."
Israel has denied that it is implementing the "General's Plan".
Under that strategy, devised by former General Giora EIand, civilians would be told to leave the north, supplies would be blocked and the area would become a military zone.
Those who remain would be treated as combatants and face the choice of "surrender or starve," with the aim of pressuring Hamas to release the hostages.
"The Israeli army operates according to well-established military plans, and the claim that the army is implementing this particular plan is incorrect," a spokesman for the Israeli forces said in a statement to the BBC.
But concerns are growing for the safety of the thousands of Palestinian civilians who remain in besieged towns in northern Gaza.
The UN and charities have expressed concern over the situation in northern Gaza.
And while thousands of people have been displaced, the UN says more than 65.000 people could remain in the area.
The UN also says that "virtually no aid" has entered the northern Gaza governorate for 50 days.
A spokesman said Palestinians "face critical shortages of supplies and services, as well as severe overcrowding and poor sanitation" because of the blockade.
At the beginning of the month, the UN assessed that there was a high probability of famine in the besieged areas of northern Gaza.
A BBC analysis shows that as of early October, around 90 percent of northern Gaza was under evacuation orders.
Videos posted on social media document people moving south.
It is not clear if and when they will be able to return, but Israel's foreign minister insists that civilians will be allowed to return after the war.
Satellite images show the displacement of people in northern Gaza.
Large groups of tents, erected as temporary shelter, are slowly disappearing.
In the area left behind, there are often destroyed buildings and other examples of military activity.
And while the Israeli military appears to have established enough control in the area to move in lightly armored vehicles, fierce fighting continues in the area between Israeli troops and Hamas fighters.
Videos released by Hamas fighters show clashes with Israeli tanks in the area around the separation line.
Experts disagree on how long the new partition is intended to remain in place.
Helljer suggests that it could form the basis of a plan for the permanent expulsion of Palestinians from the area.
"Personally, I think they will settle the Jewish settlers in the north, probably in the next 18 months," he says.
"They will not be called settlements. They're going to be called outposts or whatever at first, but that's what they're going to be and it's only going to grow from there."
Israel's far-right Finance Minister Bezalel Smotrich said troops should occupy Gaza and "encourage" about half of Palestinian civilians to leave the territory within two years.
But the Israeli government denies that it plans to build settlements in Gaza once the war ends, and Hecht dismissed such suggestions as a mere "dream" of some ultra-nationalist ministers.
"All three corridors (Philadelphia in the south, Necarim south of Gaza City and the new corridor north of Gaza City) are for control purposes only," Hecht said.
"The duration of their existence will depend on when and how the war ends."
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