READ ME File For 'Kuijjer_2020_PhD_Data'

Dataset DOI: https://doi.org/10.5258/SOTON/D1503

ReadMe Author: Eveline Kiki Kuijjer, University of Southampton, ORCID ID 0000-0003-2786-3984

This dataset supports the thesis entitled 'The role of open ocean and coastal tidal currents in the maritime migration to Sahul, ca. 65,000–50,000 years ago'
AWARDED BY: Univeristy of Southampton
DATE OF AWARD: 2020

PhD supervisors: 
Associate Professor R. Helen Farr
Professor Robert Marsh
Associate Professor Ivan D. Haigh

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DESCRIPTION OF THE DATA

** Kuijjer_2020_data_Chapter_4 **
This folder contains the results of Ariane calculations, as described in Chapter 4 of the thesis.

Lagrangian particle tracking algorithm Ariane (http://stockage.univ-brest.fr/~grima/Ariane/) was applied to a multi-year hindcast of 
ocean general circulation model NEMO (ORCA12 configuration; https://www.nemo-ocean.eu/) to calculate trajectories of particles from 
different locations in the region between Sunda (Southeast Asia) and Sahul (Australasia). Particles were released at a depth of -77.6 m 
(depth level 22), during ten recent years (1989-1998), at the start of the months January and July. Particles were released hourly for 
five days (120 particles per release site), and tracked forward or backward in time for three months, during which their position was 
stored daily.

Included in this dataset are results for each month in which particles were released. For example: 0083_kAU4b_1989jan_22_90d contains 
the results for particles released from the Australian coast (4 locations, backward in time), in January 1989, at depth level 22.
The release sites are:
-  kSun1f	Sunda, 1 release site, forward in time
-  kSul4f	Sulawesi, 4 release sites, forward in time
-  kNG4b	New Guinea, 4 release sites, backward in time
-  kTim3f 	Timor and Roti, 3 release sites, forward in time
-  kAU4b	Australia, 4 release sites, backward in time
-  kMin1f	Mindanao, 1 release site, forward in time

Results can be found in traj.txt, which includes: particle no., longitude, latitude, depth (m), time (days), temperature, salinity, density.

The location of release sites can be found in:
-  startpositions_kSun1f.asc
-  startpositions_kSul4f.asc
-  startpositions_kNG4b.asc
-  startpositions_kMin1f.asc
-  startpositions_kTim3f.asc
-  startpositions_kAU4b.asc
-  startpositions_kMin1f.asc

Date of data collection: May-December 2018.


** Kuijjer_2020_Data_Chapter_5 **
This folder contains the results of MIKE 21 simulation for the month January 2010, as described in Chapter 5 of the thesis. 
MIKE21 FM coastal modelling tool was used to calculate current speed and tidal range for 37 days, starting the 26th of December 2009.
Results are included for seven mean sea level scenarios: 0 m, -25 m, -50 m, -75 m, -100 m, -125 m, and -150 m.

Included are, in netcdf format: 
- X	 longitude
- Y	 latitude
- TE	 triangulation matrix
- MaxSP	 maximum current speed January 2010 (m/s)
- MaxTR	 maximum tidal range January 2010 (m)

Citation: Danish Hydraulic Institute (2016) MIKE 21 & MIKE 3 Flow Model FM, Hydrodynamic and Transport Module, scientific documentation. Available from: www.mikepoweredbydhi.com [Accessed 7 August 2016].

Date of data collection: December, 2017.


It is recommended that software such as MATLAB is used to view and analyse the data. Please see Chapter 4 and 5 of the thesis for details on how the data was collected. 

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This work was supported by: 
-  The Leverhulme Trust, through a Southampton Marine and Maritime Institute (SMMI) Leverhulme Trust Doctoral Scholarship on Understanding Maritime Futures.
-  The ACROSS project. This project has received funding from the European Research Council (ERC) under the European Union's Horizon 2020 research and innovation programme under grant agreement No 759677.

Date that the file was created: August 2020.