The phrase "astonishing frequency" is correct and usable in written English.
It can be used to describe something that occurs very often in a surprising or remarkable way.
Example: "The phenomenon appeared with astonishing frequency, leaving researchers eager to understand its underlying causes."
Alternatives: "remarkable frequency" or "incredible frequency".
But it contains a vivid, interesting world, in which impromptu, unscripted stories arise with astonishing frequency.
Life's necessities (housing, electricity, the contents of supermarkets) were collectively "re-appropriated" with astonishing frequency.
Leffel is also quite accomplished, turning out books, articles, and blogwork with astonishing frequency.
Aircraft crashed, ran out of fuel or suffered engine failure with astonishing frequency.
The language-challenged character managed to upstage Tony Hart – and sometimes even the sacred gallery – with astonishing frequency.
A detailed study of one county in central China by Chu Junhong of Beijing University's Population Research Institute showed an astonishing frequency of scans and abortion.
One outdoor stage was so hot that the barefoot dancers in Ms. Holmes's piece about an African village leaped into the air with astonishing speed and frequency.
It is almost as though an electronic apparatus of mine had suddenly detected some astonishing new radio frequency, whose existence had never before been suspected (for example, because I was listening to a different station).
Relative to the Gene Ontology (GO) functional classification, the FGP is detecting new, translated sequences with astonishing similarity to frequencies known for the entire Arabidopsis transcriptome.
It's like saying that the iPod earbuds have 7-channel surround sound and an astonishing 20 Hz to 20 kHz flat frequency response — just because they can play back the same album as a set of $50,000 speakers.
This high frequency of homozygous deletions is astonishing but is in agreement with the high frequency of LOH and chromosomal 9 losses seen in UC [ 44].
