During the third quarter, the primary focus of the DDE Geomorphology Working Group revolved around several key tasks. These included the development of the DDE work platform, active participation in academic conferences with accompanying presentations, and the preliminary preparation of promotional materials for the upcoming Colloquium of African Geology (CAG) conference.

Sharing Scientific Case Studies on the GBLU Datasets within the DDE Platform

To effectively showcase and promote the online big data capabilities of the DDE platform to the scientific community, the Geomorphology Working Group has undertaken pertinent case studies within the Geomorphology Platform. These cases represent scientific practices with GBLU data, offering users referenceable data utilization methods and algorithmic workflows. These case studies encompass:

1. "Identification of Fundamental County-Level Landform Patterns."

2. "Assessment of Gully Coverage in the Loess Plateau."

3. "Investigation into the Evolution of Lacustrine Plains on the Qinghai-Tibetan Plateau."

In each of these instances, the DDE online platform has been harnessed to illustrate the full spectrum of capabilities, ranging from problem formulation and demand analysis to the acquisition of results. This endeavor aims to underscore the potential offered by the GBLU data and online platform to the scientific community.

Series of presentations on National Geomorphology and Quaternary Symposium, 2023.

From August 25 to 27, 2023, the 2023 National Symposium on Geomorphology and Quaternary was convened in Taiyuan, Shanxi Province. Attending this event were Professors Tang, Yang, and Xiong, along with seven graduate students from the Geomorphology Working Group, who came together to share their research findings and engage in intellectual exchange.

During the opening ceremony, Prof. Tang delivered a presentation titled "Global Geomorphology Classification and Mapping in the Framework of DDE." In this comprehensive report, Prof. Tang provided a detailed overview of the DDE structure and the Geomorphology Working Group. He showcased the accomplishments and significant breakthroughs achieved by the Working Group in the field of global geomorphology classification and mapping. Prof. Tang also outlined the future blueprint for geomorphology node construction and expressed his strong desire for interdisciplinary collaboration and the cooperative development of geomorphology disciplines. The report elicited a warm response from conference attendees and garnered acclaim from the experts and scholars in attendance.

Professors Tang and Xiong jointly presided over the session on "New Methods and Techniques in Geomorphology Research." Prof. Xiong presented "Geomorphological Evolution Based on Modeling and Simulation of Ancient City Sites." Additionally, members of the Geomorphology Working Group, including Dr. Li Chenrui, Dr. Ma Junfei, Dr. Jiao Haoyang, Dr. Zhou Xingyu, Ms. Yu Fangyuan, Ms. Ge Meirui, and Ms. Wang Peng, delivered presentations on topics related to "New Methods and Techniques in Geomorphology Research" and "Sand Processes and Geomorphology Evolution," respectively.

Highlights from the 8th National Symposium on Digital Mountain in Kashgar, Xinjiang (2023)

Since its inception in 2014, the Digital Mountain Committee of the Chinese National Committee of the International Society for Digital Geography (ISDG) has been instrumental in organizing the National Digital Mountain Symposium. The 8th edition of this symposium, known as the National Symposium on Digital Mountain, took place in Kashgar, Xinjiang, from August 30 to September 2, 2023. A team led by Prof. Xiong from the Geomorphology Working Group actively participated in this event and presented their research findings.

During the symposium, Prof. Xiong assumed the role of session chair for "Digital Silk Road and Digital Mountain" and delivered a presentation titled "Modeling Digital Landscape Evolution Based on Wucheng Ruins." Additionally, other members of the team made valuable contributions to the event:

Lecturer Li presented a report on "Research on Deep Learning-Based Terrain Modeling Methods in Mountainous Areas."

Dr. Zhao delivered a report on "Flatland Flow Algorithm Based on Heuristic Information."

Ms. Jiang gave a presentation on "Deep Learning-Based High-Resolution Modeling of Global Mid-Ocean Ridge Topography."

Ms. Cao presented her research findings in "An Initial Exploration of Digital Terrain Analysis Based on Tactical Training in Mountainous Areas."

Preparation of promotional materials for 29^th Colloquium of African Geology in Namibia

On September 26-29, 2023, the Geological Congress of Africa will be held in Namibia, Africa. In order to better demonstrate DDE's scientific research strength at the Geological Congress of Africa and to publicize the international big science program, the Geomorphology Working Group has been selected to work on the joint presentation of the results of the multidisciplinary working group. Accordingly, the Geomorphology Working Group has produced a brochure and a slide of DDE geomorphology work, which systematically shows the composition of the Geomorphology Working Group's work, the flow of data processing methods, etc., presents the African part of the GBLU data in detail and introduces the progress of the construction of today's geomorphology platform and the production of cases.