[gis_info] Mark Bosworth is still missing

[Amy ESNARD]

To expand on Cy’s email: We are currently researching the acquisition and
analysis of cell data for an unrelated county investigation and shared some
of our research with the Douglas County Sheriff and Investigator.



Some of you may have read on Mark’s blog, *“He had his cell phone but the
battery died before he disappeared. There’s been no activity on his phone
since that time*.” Mobile devices such as the iPhone power off when the
battery is almost (<5%) depleted, but it can still transmit a signal until
it is completely depleted.



In talking with the Douglas County Investigator, they confirmed that they
had only required two of the three types of cell data. The two types they
acquired were: data for Idle Mode Query (real time location of the phone)
and Call Data Record (showing time and cell sector of last call).



We recommended they go beyond asking for a call log of last calls and
activity and to aggressively address the Idle Mode data from *the towers in
the area.* If the data is available, it is tied to a Cell Tower ID (CID)
which identifies the individual antenna that received the signal from the
phone. From that they can derive the general location. The carrier (AT&T)
could also possibly provide the sector map (modeled propagation map of the
antennas coverage area) from that tower. This is usually done in their
engineering department but we’ve been told that the carrier’s technicians
have this data.



It is very difficult to piece all of this together to find out. They have to
dig into it. It is a very specialized area with no standardization so no
carriers do things the same.  This is data that doesn't go into billing
statements so it is really a second class citizen, with no standardized
format or length of time that the data has been kept (from what we have
learned).



The purpose of acquiring this data (if available) would be to confirm if
Mark left the area and if so - which direction he headed.


Amy


-- 
Amy Esnard, GISP | GIS Manager | Multnomah County IT | 503-752-5601(M)

On Tue, Sep 27, 2011 at 3:12 PM, SMITH Cy * EISPD GEO
<cy.smith at state.or.us>wrote:

> I'm wondering if anyone has heard whether the detectives or Sheriff has
> followed up on the information Amy Esnard provided to them last Wednesday.
>  She put them in touch with the public safety folks in Multnomah County who
> dealt with the Kyle Horman case.  They worked with the telecom provider to
> trace the locations of cell phones.  According to the information she
> provided to the Douglas County folks, iPhones like the one Mark has shut
> down when 10% of the battery life is still available, and the telecom
> provider has data tracking the location of that phone until the battery is
> completely depleted.  I don't know if the detectives used that information
> in Douglas County.  They told Amy not to tell Mark's family about this
> potential lead.
>
> cy
>
> -----Original Message-----
> From: gis_info-bounces at listsmart.osl.state.or.us [mailto:
> gis_info-bounces at listsmart.osl.state.or.us] On Behalf Of
> Chris_Wayne at nps.gov
> Sent: Tuesday, September 27, 2011 2:22 PM
> To: HILL Milton E * EISPD GEO
> Cc: gis_info-bounces at listsmart.osl.state.or.us;
> gpl_list at listsmart.osl.state.or.us; ous-gis at listsmart.osl.state.or.us;
> gis_info at listsmart.osl.state.or.us
> Subject: Re: [gis_info] Mark Bosworth is still missing
>
>
> Thanks for the continuing updates, Milt.  I am hoping that Douglas SAR has
> been using GIS and GPS to facilitate this search.  I contacted Wayne
> Stinson at Douglas Sherriff Office but have yet not heard back. I reckon
> Mr. Stinson has his hands full right now. If anyone else out there is doing
> SAR GIS please get in touch with me anytime. I have provided GPS-GIS
> support to a number of SAR incidents here at Crater Lake and I would offer
> my services to them if not for a current situation that keeps me local.
> However, I am glad to offer resources/advice/information to the search
> coordinators from here.
>
>
> I first met and worked with Mark when I was working for UR-COG in Douglas
> County back in 1997.  Mark was instrumental in helping us establish GIS
> User Groups in rural Oregon, which would later become sections of ORURISA.
> It is painfully ironic that my last news of him comes from this same area.
>
>
> Hope and prayers from Crater Lake.
>
>
> Chris Wayne
> GIS Coordinator – Geographer
> Crater Lake National Park
> PO Box 7 (mailing)
> Hwy 62 Sager Bldg (shipping)
> Crater Lake, OR 97604
> (541) 594-3076 phone
> (541) 594-3070 fax
> Chris_Wayne at nps.gov
> http://www.nps.gov/crla
>
>
>
>             "HILL Milton E *
>             EISPD GEO"
>             <milton.e.hill at st                                          To
>             ate.or.us>                <gis_info at listsmart.osl.state.or.us
>             Sent by:                  >,
>             gis_info-bounces@         <gpl_list at listsmart.osl.state.or.us
>             listsmart.osl.sta         >,
>             te.or.us                  <ous-gis at listsmart.osl.state.or.us>
>                                                                        cc
>
>             09/23/2011 05:19                                      Subject
>             PM                        [gis_info] Mark Bosworth is still
>                                       missing
>
>
>
>
>
>
>
>
>
>
> Please keep Mark and his family in your thoughts.
> Visit http://www.findmarkbosworth.blogspot.com/ and consider ways to
> disseminate the information and poster.
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