This is a courtesy translation; in case of discrepancy, the Spanish version prevails.
Version 2026-10-10Terms of use, privacy, and copyright
These terms govern use of this site and all its content (texts, figures, maps, 3D model, numerical results, code, and technical article). You must accept them to enter the site.
1. Content license: CC BY-NC-SA 4.0
The original content of this site is published under the Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International license.
- Attribution: all use must cite the source as specified in section 2.
- Noncommercial: commercial use is not permitted without prior authorization.
- Share alike: derivative works must be published under the same license.
Additional permission for media. In addition to the rights granted by the license, the author authorizes informational use of the original content on television and in other media, including commercial media, under the conditions in section 3. Creative Commons licenses allow authors to grant additional permissions of this kind.
Why this license. It is requested that the study be cited and that no profit be made from it beyond informational use. The model terrain is derived from FABDEM, published under CC BY-NC-SA 4.0, whose “Share Alike” clause requires the same license for derived results. The base license is therefore CC BY-NC-SA 4.0, with the additional permission for media.
2. Mandatory citation
Any use, reproduction, or mention of figures, numbers, or conclusions must include:
Wood, L. (2026). Reconstrucción numérica del aluvión de San Carlos de Apoquindo, Las Condes (8 de octubre de 2026). https://aluvion.hirely.cl · CC BY-NC-SA 4.0
If a figure or viewer screenshot is used, the citation must appear beside the image.
3. Television and media use: permitted with credit
The content (3D viewer, screenshots, videos, figures, and numbers) may be used on television (free-to-air or subscription), online broadcasts, in the press, and on a media outlet's audiovisual platforms, without requesting prior authorization, under these conditions:
- Visible credit: on screen, while the material is shown, the text
Fuente: reconstrucción independiente · L. Wood · aluvion.hirely.cl(Source: independent reconstruction · L. Wood · aluvion.hirely.cl), or equivalent wording naming the author and the site. - No official status: do not present it as a report from a public agency or attribute conclusions to it that the study does not make.
- Do not alter results: cropping, zooming, and voice-over are allowed, but colors, figures, or flow paths must not be changed in a way that alters their meaning.
- Third-party data: the background satellite imagery, terrain, and mapping retain their own licenses (see section 5).
Notification is not required, but is appreciated: lesterwood@gmail.com. Higher-resolution material may also be requested at that email address.
4. Privacy and personal data
When you accept these terms, the following are recorded:
| Data item | Purpose |
|---|---|
| Date and time (UTC) and version of the terms accepted | Document acceptance. |
| A code derived from the IP address using a nonreversible function with a secret salt (the IP address is not stored) | Distinguish acceptance records without identifying the person. |
| Browser type (user-agent, truncated) | Record integrity. |
| Name and organization, only if provided voluntarily | Contact regarding use of the material. |
No tracking cookies, third-party analytics, or advertising are used. The site stores only a record of acceptance in the browser, so that it does not ask again.
Visit statistics (since 12 October 2026). The server records aggregated statistics from its technical logs: date and time, page visited, approximate country and city derived from the IP address (using the DB-IP Lite database), referring site, and browser or bot type. The IP address is not stored: only a nonreversible code that changes daily, to count unique visitors without identifying them. No cookies, JavaScript, or external services are used for this, and the data are only viewed in aggregate.
The record is retained while the site is published and for up to 2 years afterward, on a server in Chile. To exercise rights of access, rectification, erasure, or objection (Chile's Ley 19.628 and Ley 21.719), requests may be sent to lesterwood@gmail.com.
5. Third-party data and their licenses
| Source | License / conditions |
|---|---|
| FABDEM V1-2 (Universidad de Bristol / Fathom) | CC BY-NC-SA 4.0 — noncommercial use |
| Copernicus GLO-30 DEM (ESA) | Copernicus DEM license, with attribution “© DLR e.V. 2010-2014 and © Airbus Defence and Space GmbH 2014-2018, provided under COPERNICUS by the European Union and ESA” |
| OpenStreetMap | ODbL 1.0 — © OpenStreetMap contributors |
| Overture Maps (building footprints) | ODbL 1.0 — © OpenStreetMap contributors and Overture Maps Foundation |
| Copernicus Sentinel-2 (ESA), snow index and fire severity | Copernicus open data, with the attribution “Contains modified Copernicus Sentinel data (2025–2026)” |
| Open-Meteo (historical forecast and ERA5) | CC BY 4.0 — “Weather data by Open-Meteo.com” |
| Censo 2017 (INE), by census block | Public data, with attribution to the Instituto Nacional de Estadísticas |
| Official 1:25,000 hydrographic network (Geoportal de Chile) and emergency viewer of IDE Chile / Ministerio de Bienes Nacionales | Public information; cited as a source |
| CR2 analysis (Universidad de Chile), with data from the Río Molina station (DGA) | Cited as a source; the hyetograph in one of its figures was digitized for modeling |
| Viewer satellite imagery | Esri World Imagery (Esri, Maxar, Earthstar Geographics) — visualization only, not covered by this site's license |
| Dirección Meteorológica de Chile (station 330019) | Public data, with attribution to DMC |
| DB-IP Lite (db-ip.com), for visit statistics | CC BY 4.0 — “IP Geolocation by DB-IP” |
| Cited news reports and videos (for example, the video published by Meganoticias on 8 October) | Owned by their respective media outlets; cited as sources, not reproduced |
| Google Earth and Street View | Consulted as visual references to locate terrain features (approximate elevations and alignments); their images are not reproduced |
6. Scope and responsibility
This is an independent technical study, with no official status, based on public data and press observations. Calculated results and hypothetical scenarios are estimates conditional on their assumptions and require independent scientific validation; the study does not evaluate the capacity or condition of real structures and does not attribute responsibility; these results and scenarios do not replace reports by Sernageomin, DOH, Senapred, or the municipality, and must not be used for safety decisions, expert assessments, or insurance without validation by a qualified professional.