HELLENIC
PORT
INDEX

Data Sources & Attribution

Port Data

World Port Index · National Geospatial-Intelligence Agency (NGA)
msi.nga.mil/Publications/WPI
The World Port Index is a work of the U.S. Government and is in the public domain; it is reproduced here with attribution.

Marine Data

Wave statistics are derived from the Copernicus Marine Service "Mediterranean Sea Waves Reanalysis" product (MEDSEA_MULTIYEAR_WAV_006_012; Med-WAV system, wave model WAM 4.6.2; 1/24° horizontal resolution; hourly fields from 1985 onward). Generated using E.U. Copernicus Marine Service Information.
Mediterranean Sea Waves Reanalysis. E.U. Copernicus Marine Service Information (CMEMS), Marine Data Store (MDS). DOI: 10.48670/mds-00376

Visual Content

Figures and visual elements published on this platform are either produced by the authors or sourced from materials that are in the public domain or distributed under licences that permit reuse. Third-party materials are used in accordance with their respective licence terms and are attributed to their original creators. Where attribution or licensing for a specific item is incomplete or incorrect, please contact us so that it can be corrected or removed.

Design & Interface

Elements of the platform's visual design and interface were adapted from publicly shared community work, crediting their creators: Chathura Jayasanka's “TIDES — A Cinematic Canvas Ocean” (codepen.io/Chathura-Jayasanka/pen/emBMYWJ) and Luis Alberto Martinez Riancho's “WebGL Scroll Sync V3” (codepen.io/luis-lessrain/pen/LERxVqv).

---

Materials & Methods

All analytical statistics, workflows, and derived products — beyond the datasets and materials explicitly attributed above — have been developed by the authors. Detailed documentation will be released in future versions of the platform.

Disclaimer

The Hellenic Port Index is not an operational forecasting system. The information provided through this platform:

• is intended solely for research and educational purposes;
• does not constitute engineering, operational, or navigation advice;
• may contain uncertainties inherent to numerical modelling and data processing;
• should not be used as the sole basis for design or decision-making.

The developers and the hosting institution assume no liability for any use or interpretation of the results.

Versioning

The platform is under continuous development. Methods, datasets, and products may change without prior notice.

Open Science Note

This platform supports transparent, well-documented scientific workflows and promotes reproducible environmental analytics, open geospatial methodologies, and responsible interpretation of marine and climate information. The terms under which HPI outputs may be reused are set out in the "Research Use & Non-Commercial Licence" section below.

Intellectual Property Rights & Copyright

© Laboratory of Coastal & Harbour Works (LCHW), Democritus University of Thrace (DUTh), 2026.

All intellectual property rights related to the Hellenic Port Index (HPI) platform — including but not limited to:

• analytical methodologies and computational workflows;
• derived statistics, datasets, and visualisations;
• software components and digital infrastructure;
• platform architecture and design elements;
• documentation and scientific content

are owned by or licensed to the Laboratory of Coastal & Harbour Works, Democritus University of Thrace, unless explicitly stated otherwise.

No part of the platform content may be reproduced, redistributed, modified, or commercially exploited without prior written permission from the rights holder, except where permitted under applicable research, educational, or open-data licensing frameworks, or under the terms set out below. Use of the platform does not imply any transfer of intellectual property rights.

Third-Party Content

Certain datasets and visual content incorporated into the platform originate from external providers and remain subject to the intellectual property rights and licensing conditions of their original creators or distributors. Users are responsible for verifying and complying with the applicable terms before any reuse.

Research Use & Non-Commercial Licence

Unless otherwise specified, original analytical outputs generated within the HPI framework may be used for:

• academic research;
• teaching and educational purposes;
• scientific publications with proper citation.

Any commercial use, redistribution of derived datasets, or integration into proprietary systems requires prior written authorisation. All rights not expressly granted are reserved.

Citation

If you use results from this platform, please cite:

Laboratory of Coastal & Harbour Works (2026). Hellenic Port Index (v1). Department of Civil Engineering, Democritus University of Thrace, Greece. lchw.civil.duth.gr

Please also acknowledge the underlying marine data:

Generated using E.U. Copernicus Marine Service Information. Mediterranean Sea Waves Reanalysis (MEDSEA_MULTIYEAR_WAV_006_012). E.U. Copernicus Marine Service Information (CMEMS), Marine Data Store (MDS). DOI: 10.48670/mds-00376

Contact

For scientific enquiries or collaboration requests, please contact:
Achilleas Samaras · achsamar@civil.duth.gr