"increasing phenomenon" is correct and can be used in written English.
It is used to describe something that is increasing in frequency or intensity, usually over a period of time. For example, "The increasing phenomenon of sea level rise is thought to be caused by global warming."
Graduate nurse attrition is an increasing phenomenon within a world of decreasing nursing numbers.
In addition, Sarah Phillimore, who co-founded the Transparency Project to increase understanding of the family courts, says that there is an increasing phenomenon of "confirmation bias".
Urban Heat Island (UHI) is an increasing phenomenon experienced by most of the growing cites in India.
The creep values increase with increase loading rate and this increasing phenomenon follows a Natural Logarithm function.
The Times's Michael Luo wrote in Monday's paper about the increasing phenomenon of workers accepting jobs for which, in terms of their education and experience, they are considered overqualified.
This is especially true for Northeast Thailand, where the agricultural land is affected by the soil salinity, which is a widespread and an increasing phenomenon affecting 25% of the agricultural land.
The increasing phenomena related to urbanization and human impact on landscape leads to re-think the future of the cities.
Table 1 also shows that Africa has a very large rural population, although urban migration is an increasing phenomena.
The increasing ageing phenomenon has presented tremendous challenges on economic prospects and societal wellbeing.
Globally, the costs of natural disasters are increasing — a phenomenon that is compounded by the effects of climate change, population growth, and institutional instability.
The aforementioned case study is a representative of an increasing economic phenomenon.
