在线国产一区二区_成人黄色片在线观看_国产成人免费_日韩精品免费在线视频_亚洲精品美女久久_欧美一级免费在线观看

Global EditionASIA 中文雙語Fran?ais
Culture
Home / Culture / Heritage

Shipwrecks offer up their treasures

By Chen Bowen | China Daily | Updated: 2024-06-24 06:42
Share
Share - WeChat
A state-of-the-art scientific research vessel on the archaeological expedition scene. [Photo provided to China Daily]

State-of-the-art tech

In 2023, the National Centre for Archaeology, the Institute of Deep-sea Science and Engineering of the Chinese Academy of Sciences and the China (Hainan) Museum of the South China Sea joined forces to form a team, which pooled expertise from various fields to undertake research, excavation and preservation activities linked to underwater cultural heritage. Employing cutting-edge deep-sea technology, the team utilized the scientific research vessels Tansuo 1 and Tansuo 2, alongside the manned submersible Shenhai Yongshi (Deep-Sea Warrior), for an archaeological expedition at the two shipwreck sites.

The long baseline positioning system, for example, has revolutionized the accuracy of positioning, navigation and labeling of positions, making mapping underwater terrain more precise. With the system, "we have increased the update rate of underwater positioning from the previous 60 seconds to 3 seconds, providing divers with real-time navigation reference without delays", said Chen Chuanxu, deputy head of the scientific department of the Institute of Deep-sea Science and Engineering.

The Shenhai Yongshi is equipped with three-dimensional laser scanning and high-definition cameras to capture panoramic images and create detailed 3D scans of the shipwreck sites' distribution area.

Precise positioning and 3D reconstruction of all artifacts at the sunken shipwreck sites are required for underwater archaeological operations, according to Chen.

"In the depths of 1,500 meters, these present new challenges to our previous techniques for underwater positioning and measurement," he said. "To meet the demand, upgrades were made to the manned submersible platform and detection payloads to integrate information such as position, altitude, speed and synchronized clock into a laser-scanning device for high-precision 3D mapping."

The Shenhai Yongshi is also outfitted with an enhanced manipulator system. "The traditional rigid material manipulator claws have been replaced with claws made of flexible materials, ensuring the stable extraction of underwater artifacts while preserving the precious details and patterns on the surface of the artifacts for further study and conservation," said diver Deng Yuqing from the Institute of Deep-sea Science and Engineering.

Extensive sampling of submarine sediment, seawater and marine organisms has also been carried out, providing data for environmental analysis and understanding of the ecosystem surrounding the shipwreck sites.

Since its presumable submersion in 1506, the gradual alterations within No 1 Shipwreck have intertwined with marine life and the micro-environment on the seabed. This symbiotic relationship has fostered the development of a distinctive underwater ecosystem, giving rise to a fragile ecological chain encircling the sunken vessel. "The retrieval and examination of samples, encompassing mud samples from the seabed, sediment from the ocean floor, and the microorganisms therein, represent pivotal measures in comprehending and conserving the shipwrecks for posterity," Song said. "Through the analysis of these samples, our objective is to amass scientific data that will assist us in effectively safeguarding these historical sites and the ecosystems enveloping them."

Over the past year, over 200 individuals took part in the collaborative team efforts for detailed data recording, precise photo stitching and the methodical execution of archaeological procedures. Across the three stages, the team established standardized protocols, enhanced processes and introduced innovative methodologies. "These developments have established a strong foundation for our future deep-sea archaeological expeditions, especially in the South China Sea," said Song.

The three stages of exploration "fully showcase the integration of China's deep-sea technology and underwater archaeology, marking a significant step forward towards international advanced levels," said Guan Qiang, deputy director of the National Cultural Heritage Administration.

|<< Previous 1 2 3 4 Next   >>|
Most Popular
Top
BACK TO THE TOP
English
Copyright 1995 - . All rights reserved. The content (including but not limited to text, photo, multimedia information, etc) published in this site belongs to China Daily Information Co (CDIC). Without written authorization from CDIC, such content shall not be republished or used in any form. Note: Browsers with 1024*768 or higher resolution are suggested for this site.
License for publishing multimedia online 0108263

Registration Number: 130349
FOLLOW US
主站蜘蛛池模板: 国产精品一区一区 | 国产精品久久综合 | 久久亚洲一区 | 欧美性v| 国产精品极品美女在线观看免费 | 日本免费在线 | 国产美女在线观看精品 | 日韩中文字幕一区二区 | 中文字幕第一页久久 | 欧美一区 | 国产一区二区视频在线观看 | 欧美日韩国产成人在线 | 日韩精品一区二区三区四区视频 | 日韩中文字幕在线视频 | 免费观看特级毛片 | 一级毛片在线播放 | 在线免费中文字幕 | 国产精品一区二区三区四区 | 成人国产精品一级毛片视频 | 麻豆专区一区二区三区四区五区 | www.91av| 亚洲激情一区 | 亚洲最大成人免费视频 | 久久久久久久影院 | 国产精品一区二区久久久 | 亚洲精品久久久久午夜 | 午夜免费看片 | 亚洲欧美日韩在线一区 | 视频在线91 | 欧美成人免费一级人片100 | 激情五月综合 | 中文字幕免费在线 | 久久久久久久久综合 | 日本视频在线观看 | 91精品久久久久久久99 | 国产男女免费完整视频 | 亚洲一区二区三区视频免费观看 | 日韩一区二区在线观看视频 | 国产一级免费视频 | 一区二区三区在线免费观看 | 亚洲无限乱码一二三四麻 |