A GEOGRAPHICAL profiler is among the team of experts aiding the inquiry.
The profiler will examine the wider area around the body was found and compare this murder and the "deposition" site to others.
Questions asked will be why someone would choose a site and whether the act appeared planned.
The shallow grave was said to be in the type of place someone might find "if you were looking for a secluded area for something like that (the disposal of a victim)".
Mr Hardie said: "This isn't a crime scene ... This is a deposition site.
"We have a geographical profiler and behavioural analyst regarded as experts in the UK and they are going to look at the deposition site.It is a fairly secluded area."
The choice of site raises questions as it is in the city, and the surrounding parkland is usually busy.
It is thought the operation to conceal the body would have been difficult. Someone would have had to dig for some time in compact soil, hacking through roots, to create the grave.
The behavioural analyst will also aid other experts from around the UK who will be consulted to help establish the killer's personal profile.
Mr Hardie said: "You would have no particular reason other than wanting to be on your own. In my opinion someone has gone up to look for a site."
Mr Hardie said digging the grave "wouldn't be something you would do without a great deal of effort and difficulty over an extended period of time".
The detective added: "What we're looking to do is bring together a team of experts around deposition."
Police have almost finished their initial work at the site.
A geographical profiler was used in the investigation that let to the 2009 conviction of Marek Harcar for the murder of Moira Jones found in Queen's Park in Glasgow.
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