Mapping techniques Flashcards
What are the 4 stages of forensic recovery?
- Location – searching for the remains above or below ground.
- Mapping – grid the site to ensure detailed documentation of recovery.
- Excavation (where appropriate)
- Collection – proper packing of remains for further laboratory-based analysis.
What are key variables in forensic context?
- Depth of time
- Intent of placement
What are indicators of forensic circumstances to assess?
- Location of remains
- Position & orientation of body
- Preservation state
- Associated artefacts & evidence
What are the types of search areas?
- Open
- Obstructed
- Submerged
What are the different search methods?
- Aerial reconnaissance
- Walking grids
- Remote sensing
What do all search techniques be in accordance with?
“All techniques used must comply with relevant legislation and be demonstrably fit for defined purpose(s).”
What are questions to ask when locating remains?
- When did the event occur?
- Height and weight of individual?
- How deep was the body buried?
- Was the body wrapped in anything?
- Was the body clothed?
- What were the local conditions in the area?
- Was anything placed over the grave to conceal its location?
- Were there any unique landmarks?
- Has the landscape changed since the burial?
What search method is best for small teams or hillside areas?
Spiral
Spiral search method
- Works best for small teams or hillside locations
- Ensures no inadvertent trampling of evidence
- Reverse pattern used for searching for scattered remains
Strip/line search method
- Most common
- 100% coverage if properly executed
- Each line directed by team leader in middle of line
- Forensic specialist walk behind the line and inspect marked items of interest
Grid search method
- More time-consuming variation of strip/ line search
- Advantage: multi-directional and multi-angled search
- Helps account for light-mediated
revealing/obscuring of evidence.
Quadrant/zone search method
- For detailed searches of small areas
- Often implemented after remains have
been found
What are the different types of search method?
- Spiral
- Strip/line
- Grid
- Quadrant/zone
What are indicators of surface deposits?
- Skeletal remains and soft tissue
- Clothing, personal objects and weapons
- Decomposition odour and staining
- Insect activity
- Loose trash or brush heaps
- Animal activity and scavenging
- Materials used for wrapping body
What are indicators of buried remains?
- Mounding of dirt
- Primary burial depression filled with leaf litter
- Ground cover that varies from surrounding plant growth due to disturbance of topsoil
- A burrow possibly from a scavenging animal
- Mixed soil