That is about 20km (12m) south-east of where the North conducted its sixth and most powerful nuclear test on September 3, an official from the Korea Meteorological Administration in Seoul said.
Reacting to Trump's assertions, North Korean leader said that remarks by "deranged" US President convinced him he is right to develop weapons for North Korea.
Following Trump's speech this week to the General Assembly, in which he singled out Kim Jong Un for criticism, North Korea's foreign minister, Ri Yong Ho, said if the USA president "was thinking he could scare us with the sound of a dog barking, that's really a dog dream".
Pyongyang later said it had tested a hydrogen bomb that could be fitted onto a missile - an assertion that no foreign government has so far confirmed.
Foreign Minister Ri Yong Ho spoke to reporters in NY during the UN General Assembly shortly after North Korean leader Kim Jong Un made an unprecedented televised statement, accusing Trump of being "mentally deranged". A South Korean expert said the quake could have been caused by geological stress created from the recent nuclear explosion.
"Australia is a strong supporter of the Paris agreement, and here at the United Nations we have voiced our support specifically on risk mitigation for coral reefs, which are among the most valuable environments on our planet", the Foreign Minister said.
The ban on textiles, North Korea's second largest export, is expected to cost the country around $700 million a year. "The opening offer that the regime has offered is they want the United States to abandon their hostile policy toward North Korea". That has led to several United Nations-backed sanctions packages as well as an escalating war of words between the young autocrat and U.S. President Donald Trump.
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Kim Jong Un of North Korea, who is obviously a madman who doesn't mind starving or killing his people, will be tested like never before!
These sanctions, harsher than those approved before by the UN.and individual governments such as the United States, are created to choke North Korea's economy.
To comply with a UN Security Council resolution calling for sanctions over North Korea's nuclear activity, China said Friday that it will limit its exports of refined petroleum products to Pyongyang as well as ban imports of the North's textiles.
Of North Korea's likely response should China turn against it, Jeffrey Lewis, the director of an East Asia program at the Middlebury Institute for International Studies, told The New York Times, "The last thing you would do in that situation is give up your independent nuclear capability".
President Trump has said the US will impose new sanctions on North Korea and praised China for taking measures to financial transactions with the nation.
China also will ban textile imports from the North, the ministry said. Most of those threats have been against the US.
Foreign Minister Wang Yi said that in a complex and volatile world, China is an "anchor of stability". The recently imposed sanctions will be given time to take effect before military action is contemplated.