The phrase "activity has been ongoing" is correct and usable in written English.
It can be used to describe a situation or process that has been continuing for a period of time without interruption.
Example: "The activity has been ongoing for several months, and we expect it to continue into the next quarter."
Alternatives: "activity has been continuous" or "activity has been in progress".
Volcanic activity has been ongoing in recent years, with 2015 being one of the most active in recent history.
No historical records of phreatic eruptions before 1979 have been discovered, but fumarolic activity has been ongoing for several hundred years at Jigokudani to the southwest of the summit (Oikawa 2008).
That activity has been ongoing for about three months, he said.
This activity has been ongoing since 2007 in North Western, Central, Western, Eastern, Luapula, Lusaka, and Southern Provinces.
Standardization activities have been ongoing for 60 GHz Wireless Personal Area Networks (WPAN) [5] (i.e., IEEE 802.15) and Wireless Local Area Networks (WLAN) [6] (i.e., IEEE 802.11).
All activities have been ongoing up to the end of December 2013, while implementation of district level rheumatology consultation and referral links is projected to be achieved by the end of 2014.
In addition, though, IDIAP (and in particular Hervé Bourlard) acts as our partner in the Swiss visitor program, an activity that has been ongoing in one form or another for 19 years.
These findings are important, as cross-sectional imaging plays an increasing role in the assessment of Crohn's disease activity, and there has been ongoing debate regarding the modality that should be the preferred choice [ 35– 35].
While Africa's response to its health challenges has varied considerably across the continent, with governments traditionally placing less emphasis on developing S&T than other sectors [ 7], there has been ongoing R&D activity in genomics and related fields of technology over the past several years in various parts of the region.
