"as underlying" is a correct and usable phrase in written English.
It is used to indicate that something is the basis or reason for another action. For example: "We believe the government should step in to mitigate the economic damage, as underlying economic issues have caused prolonged instability."
Booker sees his narrative archetypes as underlying politics, both hard (communism, fascism) and soft (feminism, environmentalism).
Ideas are studied not as underlying motives for action, but in another way.
Attitudes are sometimes regarded as underlying predispositions, while opinions are seen as their overt manifestations.
An unchanging unity (the constant Dao) was seen as underlying the kaleidoscopic plurality.
Demography has long been recognized as underlying a wide range of phenomena either directly or indirectly critical to our everyday lives.
Profits in the UK rose 16.2% as a result as underlying sales at B&Q rose 1.4%, the strongest level for five years.
Even supposedly encouraging employment statistics harbour trouble, as underlying signals show businesses are pulling back from creating jobs and focusing on cost-cutting.
We remain concerned that margins are unsustainable as underlying growth returns next year, and that forecast expectations beyond the current year remain high.
Tim Oates, director of assessment and development, emphasised that the findings were very important as "underlying school-level volatility may be an enduring and persistent feature of education".
Her razor-sharp dissection of the fear and power that she saw as underlying the white colonial experience made the book an instant success.
And farmland in some areas of California subsided more than thirty feet between the nineteen-twenties and the nineteen-seventies, as underlying aquifers were emptied.
