三级aa视频在线观看-三级国产-三级国产精品一区二区-三级国产三级在线-三级国产在线

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: 黄色免费在线观看 | 一级黄色网络 | 久久欧美精品欧美九久欧美 | 色片免费观看 | 日本高清不卡免费 | 成人看片黄a免费看视频 | 久久免费精品视频在线观看 | 久久亚洲私人国产精品 | 欧美一区二区三区视频 | 台湾永久内衣秀 | 色黄网站在线观看 | 91av视频免费在线观看 | 亚洲精品ai换脸一区二区三区 | 视色4se影院在线播放 | 精品特级一级毛片免费观看 | 九九热精品免费视频 | 久久国产网站 | 二区三区不卡不卡视频 | 国产黑色丝袜在线播放 | 欧美黄一片 | 午夜免费福利在线 | 欧美毛片一级的免费的 | 婷婷亚洲综合五月天小说在线 | 免费一级毛片在线播放放视频 | 成人毛片免费观看视频 | 亚洲国产91在线 | 国产精品青草久久久久福利99 | 91青青视频 | 国产一级二级三级 | 国产影院在线观看 | 日日噜噜噜夜夜爽爽狠狠 | 一道本一区二区三区 | 国产区视频在线观看 | 99九九精品 | 成人性生交大片免费看软件 | 800玖玖爱在线观看香蕉 | 免费的污网站 | 日韩在线毛片 | 亚洲欧美综合网站 | 国产精品亚洲午夜不卡 | 热久久最新地址 |