Unit 10 Scent Theory

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Information about Unit 10 Scent Theory
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Published on November 17, 2007

Author: Belly

Source: authorstream.com

Slide1:  Canine Search Specialist Training Unit 10: Scent Theory Unit Objective:  Unit Objective Upon completion of this unit, you will be able to explain the theory of scent as it relates to canine search for live victims in a collapsed structure Enabling Objectives:  Enabling Objectives Rationale for understanding scent movement Factors that may affect scent How scent is transported away from the victim Plan the search of a collapsed structure to efficiently work canines into scent Rationale:  Rationale Dogs “see” the world through their nose Scent is 3-dimensional to them Our job is to put them where they can best detect scent The Nose Knows:  The Nose Knows w Canine Olfactory System:  Canine Olfactory System Olfactory Sensory Cell Estimates Man=5 million Fox Terrier=147 million German Shepherd=220 million CONTRIBUTORS TO HUMAN SCENT COMPLEX:  CONTRIBUTORS TO HUMAN SCENT COMPLEX Human Scent Sebum, Squalene Respiratory Tract GI Tract Volatile Fatty Acids Amines Bacterial Action K, Cl, Urea, Ca Mg, PO4, HOH MEOH H2SO4 Volatile Fatty Acids Other factors: Genetic, Diet, Environment Adipose HUH?:  HUH? What is scent to a canine?:  What is scent to a canine? Dying/dead skin cells laden with bacteria – called rafts These rafts are shed from the skin as well as the respiratory and digestive tracks Skin Rafts:  Skin Rafts Approximately 40,000 per minute!!! Slide13:  “If one gram of butyric acid was made to evaporate evenly in all the rooms of a ten story office building, a man would barely be able to perceive its existence by standing in one of the rooms. However, if the same gram of butyric acid was diluted to fill the air above the entire city of Hamburg, the dog could still perceive it at an altitude of 300 feet.” William Syrotuck Scent and the Scenting Dog, pg. 13 How is scent dispersed?:  How is scent dispersed? The scent is heaviest at the source and dispersed away from the victim in a cone Influences on Scent Dispersal:  Influences on Scent Dispersal Environmental Influences:  Make rubble Environmental Influences Environmental Influences:  Environmental Influences Temperature Wind strength and direction Humidity Sun Slide18:  Make rubble Temperature:  Temperature Hot Cold The temperature of victim versus the temperature of the environment Wind :  Wind Strength Direction Humidity:  Humidity High Low Rain Sun:  Sun Clear Overcast Night Slide23:  Night-time Flows Day-time Patterns Structural Influences:  Structural Influences Structural Influences:  Structural Influences Building architecture Elevator shafts Closed stairwells Windows Breached Floors/Walls Structural Influences:  Structural Influences Scent flows well in: Broken rubble Light framing Brick Katrina 2005:  Katrina 2005 Scent Flow and Detection:  Scent Flow and Detection The FEMA canine is trained to indicate the presence of a live victim by performing a focused bark alert at the point in the rubble where the strongest live human scent is emitted. Bark, Bark DETECTION VS LOCATION :  DETECTION VS LOCATION Dogs are SCENT detectors NOT victim locators! Scent Flow - Channeling:  Scent Flow - Channeling Solid Slabs Large Chunks Slide31:  Solid Slabs Large Chunks Bark bark!!! Scent Source Detection:  Scent Source Detection Be able to interpret your dog’s alert Document Debrief Handler to STM Handler to Handler Scent Flow - Funneling:  Scent Flow - Funneling Bark Bark!!! Scent Flow - Pooling:  Scent Flow - Pooling Bark Bark ! Typical Collapse Patterns:  Typical Collapse Patterns Lean-To “V” Pancake Cantilever Lean-To:  Lean-To “V”:  “V” Pancake:  Pancake Cantilever:  Cantilever What’s This?:  What’s This? Use Your Scent Knowledge:  Use Your Scent Knowledge Identify scenting conditions Surveyor’s tape, Puff bottles/talc mirror scent pattern Interpret pattern of alerts Send canine from position which maximizes probability of detection Considerations:  Considerations Hazardous materials Live vs. Dead Number of Victims Found Distractions Slide45:  Questions? Unit Summary and Evaluation:  Unit Summary and Evaluation Unit Summary:  Unit Summary Explain the rationale for understanding scent movement Discuss the factors that may affect scent Explain how scent is transported away from the victim Explain how to plan the search of a collapsed structure to efficiently work canines into scent Unit Evaluation:  Unit Evaluation Please fill out the evaluation on this briefing

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