Just a note that an AAI (Area of Archaeological Importance) is a legal definition in England.
https://historicengland.org.uk/advice/hpg/has/archaeologicalimportance/
They aren’t widely used and slightly antiquated now, as such only five places in England have the definition (Canterbury, Chester, Exeter, Hereford and York), but it is important because it means that every single groundworks need archaeological mitigation.
It’s not unlikely that very similar acronyms could lead to some confusion, if we are trying to work towards a national cohesion eventually.
Cheers
Liam
From: Issues related to Historic Environment Records [mailto:[log in to unmask]] On Behalf Of Sylvina Tilbury
Sent: 12 February 2019 17:04
To: [log in to unmask]
Subject: {Disarmed} Re: Creating Polygons
Just to note that contrary to what I said earlier, we have indeed been asked to add the term “Area of archaeological interest” to the relevant lookup table supplied to Scottish users, in fact it was there all along staring me in the face in Val’s new database:
RepresentationType
Current
Include
SortOrder
ScopeNote
Origin
IsDefault
Area of archaeological interest
-1
-1
0
The spatial representation defines the limits of known upstanding and prospected remains, and the extrapolation of that information to assess the potential fuller extent of a heritage asset.
SHED Technical Specification No. 2
0
So apologies for any confusion I may have inadvertently caused for Scottish HBSMR users!
Thanks
Sylvina
Sylvina Tilbury
Heritage IT Consultant
exegesis
SPATIAL DATA MANAGEMENT
t: +44 (0) 1874 713065 | e: [log in to unmask]<mailto:[log in to unmask]> | w: www.esdm.co.uk<http://www.esdm.co.uk/>
From: Issues related to Historic Environment Records <[log in to unmask]<mailto:[log in to unmask]>> On Behalf Of Crispin Flower
Sent: 12 February 2019 11:22
To: [log in to unmask]<mailto:[log in to unmask]>
Subject: Re: Creating Polygons
When designing HBSMR v5 and consulting on the spatial metadata, there was some unease with the “Discovery Area” term for the Representation Type element, so we used a slightly different default term for the same concept. We used “Location (not extent)”, as a rather prosaic way of contrasting with the other options of “Extent”, “Buffered extent”, and “Unknown”.
But as Sylvina noted earlier, this is just a default set of terms that we ship, and any HER can augment or adapt, including changing this text to “Discovery Area” as I’m sure has ben done north of the border!
Regarding “Area of Archaeological Interest” as a possible addition to the list of spatial Representation Types, I cannot see any need for this term for monument records (which almost by definition are “areas of archaeological interest”, so the spatial representation type would just be one of the existing options). The aspect of spatial representation that is arguably missing from the existing set of terms in this context is that such areas may be “hypothetical” extents based on inference from a wide range of evidence, even techniques like predictive modelling and machine learning. So I’d see a case for adding something like “Hypothetical Extent” or “Predicted Extent” to the list. I think I’ll log that as a request in the HBSMR GitHub area, for discussion.
More generally though, I’d suggest that such areas of mapped potential are not monument records at all, they are something else, more like SHINE or consultation trigger areas, i.e. quasi designated areas created with particularly curatorial uses in mind. Any one such area will typically include many monument records (or none!). And such things are easily done in HBSMR’s Designations module (and already done by many HERs), or in the HLC/Areas module (less common but equally possible).
All the best
Crispin
From: Issues related to Historic Environment Records <[log in to unmask]<mailto:[log in to unmask]>> On Behalf Of Val Turner
Sent: 12 February 2019 10:36
To: [log in to unmask]<mailto:[log in to unmask]>
Subject: Re: Creating Polygons
We use Discovery Areas for sites where we know, or its been claimed that there’s something there, but we don’t have any mapping/AP or field visit evidence to pinpoint it at present. Obviously when we find the site, we change the polygon. We’re finding them useful - such a step up from point data
Val
Dr Val Turner
Shetland Regional Archaeologist
Shetland Amenity Trust, Garthspool,
Lerwick, Shetland, ZE1 0NY
Tel: (01595) 694688
www.shetlandamenity.org
The Shetland Amenity Trust is a registered
Scottish charity, No: SC017505
From: Issues related to Historic Environment Records [mailto:[log in to unmask]] On Behalf Of Nick Boldrini
Sent: 12 February 2019 09:45
To: [log in to unmask]<mailto:[log in to unmask]>
Subject: Re: Creating Polygons
Hi guys
Thanks for the various replies
Andrew - had read through the Scottish stuff a while but couldn’t remember what it was called, or where to find it! But being reminded of it helps focus my thoughts – I think what I was trying to get at is the difference between known extents, potential and discovery polygons. Though I think Discovery polygons is a bit of a weird one – I get it, but am not sure it would be a priority for us.
Keith – could you send me the manuals please?
Others – what I was trying to ask is related to what SHED got at – are you polygonising potential, or only known extents? Or both eg the suspected route of a Roman road as well as the bits where is known to exist, for example?
thanks
best wishes
Nick Boldrini
Historic Environment Record Officer
Archaeology Section
Tel: 03000 267008
From: Issues related to Historic Environment Records <[log in to unmask]<mailto:[log in to unmask]>> On Behalf Of Nicholson, Andrew
Sent: 11 February 2019 16:55
To: [log in to unmask]<mailto:[log in to unmask]>
Subject: Re: Creating Polygons
Hi Nick,
I know you’re in a different country 😉 but up here the SHED scheme has been looking at polygonization for some time.
We have an understanding that HES record Known Site Extent Polygons (Middleton 2015), but that Local Authorities also need to record areas of known potential, defined as an Area of Archaeological Interest:
“4.1 An Area of Archaeological Interest polygon defines the limits of known upstanding and prospected remains, and the extrapolation of that information to assess the potential fuller extent of a heritage asset. The polygon will be created based primarily on sources and professional judgement. Area of Archaeological Interest polygons should include a buffer and should be plotted against the largest map scale available. The shape of the polygon does not define the limit of the known extent, but rather includes it within the larger polygon.”
See
http://smrforum-scotland.org.uk/wp-content/uploads/2016/11/SHED-Technical-spec-2_Area-of-Archaeological-Interest_2017_V2.2.pdf
The document contains links to other works undertaken on this.
Cheers
Andy
Andrew Nicholson
Archaeologist
Dumfries and Galloway Council
Strategic Planning
Kirkbank House, English Street
Dumfries, DG1 2HS
Tel: 01387 260154 (int. 64154)
Mob: 07342 060202
+ <mailto:[log in to unmask]>
Please note my normal working hours are 10:30 - 18:30
http://www.gallowayglens.org/ - a new heritage scheme for the region, check it out and get involved!
http://www.historicchurchyards.co.uk/ - a resource on historic graveyards in Dumfries and Galloway
http://www.futuremuseum.co.uk/collections/people/lives-in-key-periods/archaeology.aspx - website showcasing the best finds from the region
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From: Issues related to Historic Environment Records <[log in to unmask]<mailto:[log in to unmask]>> On Behalf Of Nick Boldrini
Sent: 11 February 2019 16:42
To: [log in to unmask]<mailto:[log in to unmask]>
Subject: Creating Polygons
Hi folks
We have started work on polygonising our records, and having had a bit of a play need to come up with some sort of policy/manual so we have consistency. The playing phase has thrown up some things to consider, and previous experience means I am aware of some others.
I am aware of various guidance on this (eg MIDAS etc) , but has anyone actually written a manual on what they polygonise (and as importantly what they don’t) and why they made those distinctions, they would be willing to share so I can benefit from previous experience/pinch all your good ideas?
I have some ideas and it seems there is no perfect solution, there will always be trade offs, but it would be useful to get anyone elses views on this, even if its just via email if you don’t have a formal document
tar
best wishes
Nick Boldrini
Historic Environment Record Officer
Archaeology Section
Heritage, Landscapes and Design Team
Planning Service
Regeneration and Local Services
Durham County Council
County Hall
Durham
DH1 5UQ
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